45 files changed, 1150 insertions, 1131 deletions

diff --git a/fs/gfs2/Kconfig b/fs/gfs2/Kconfig
index de8e64c03f73..7f7947e3dfbb 100644
--- a/fs/gfs2/Kconfig
+++ b/fs/gfs2/Kconfig
@@ -1,6 +1,6 @@
 config GFS2_FS
         tristate "GFS2 file system support"
-        depends on EXPERIMENTAL
+        depends on EXPERIMENTAL && (64BIT || (LSF && LBD))
         select FS_POSIX_ACL
         select CRC32
         help
diff --git a/fs/gfs2/Makefile b/fs/gfs2/Makefile
index 8fff11058cee..e2350df02a07 100644
--- a/fs/gfs2/Makefile
+++ b/fs/gfs2/Makefile
@@ -1,6 +1,6 @@
 obj-$(CONFIG_GFS2_FS) += gfs2.o
 gfs2-y := acl.o bmap.o daemon.o dir.o eaops.o eattr.o glock.o \
-        glops.o inode.o lm.o log.o lops.o locking.o main.o meta_io.o \
+        glops.o inode.o log.o lops.o locking.o main.o meta_io.o \
         mount.o ops_address.o ops_dentry.o ops_export.o ops_file.o \
         ops_fstype.o ops_inode.o ops_super.o quota.o \
         recovery.o rgrp.o super.o sys.o trans.o util.o
diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c
index 1047a8c7226a..3e9bd46f27e3 100644
--- a/fs/gfs2/acl.c
+++ b/fs/gfs2/acl.c
@@ -116,7 +116,7 @@ static int acl_get(struct gfs2_inode *ip, int access, struct posix_acl **acl,
                 goto out;
 
         er.er_data_len = GFS2_EA_DATA_LEN(el->el_ea);
-        er.er_data = kmalloc(er.er_data_len, GFP_KERNEL);
+        er.er_data = kmalloc(er.er_data_len, GFP_NOFS);
         error = -ENOMEM;
         if (!er.er_data)
                 goto out;
@@ -222,7 +222,7 @@ int gfs2_acl_create(struct gfs2_inode *dip, struct gfs2_inode *ip)
                 return error;
         }
 
-        clone = posix_acl_clone(acl, GFP_KERNEL);
+        clone = posix_acl_clone(acl, GFP_NOFS);
         error = -ENOMEM;
         if (!clone)
                 goto out;
@@ -272,7 +272,7 @@ int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr)
         if (!acl)
                 return gfs2_setattr_simple(ip, attr);
 
-        clone = posix_acl_clone(acl, GFP_KERNEL);
+        clone = posix_acl_clone(acl, GFP_NOFS);
         error = -ENOMEM;
         if (!clone)
                 goto out;
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index e9456ebd3bb6..c19184f2e70e 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -33,6 +33,7 @@
  * keep it small.
  */
 struct metapath {
+        struct buffer_head *mp_bh[GFS2_MAX_META_HEIGHT];
         __u16 mp_list[GFS2_MAX_META_HEIGHT];
 };
 
@@ -135,9 +136,10 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page)
                 /* Get a free block, fill it with the stuffed data,
                    and write it out to disk */
 
+                unsigned int n = 1;
+                block = gfs2_alloc_block(ip, &n);
                 if (isdir) {
-                        block = gfs2_alloc_meta(ip);
-
+                        gfs2_trans_add_unrevoke(GFS2_SB(&ip->i_inode), block, 1);
                         error = gfs2_dir_get_new_buffer(ip, block, &bh);
                         if (error)
                                 goto out_brelse;
@@ -145,8 +147,6 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page)
                                               dibh, sizeof(struct gfs2_dinode));
                         brelse(bh);
                 } else {
-                        block = gfs2_alloc_data(ip);
-
                         error = gfs2_unstuffer_page(ip, dibh, block, page);
                         if (error)
                                 goto out_brelse;
@@ -161,12 +161,11 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page)
 
         if (ip->i_di.di_size) {
                 *(__be64 *)(di + 1) = cpu_to_be64(block);
-                ip->i_di.di_blocks++;
-                gfs2_set_inode_blocks(&ip->i_inode);
-                di->di_blocks = cpu_to_be64(ip->i_di.di_blocks);
+                gfs2_add_inode_blocks(&ip->i_inode, 1);
+                di->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode));
         }
 
-        ip->i_di.di_height = 1;
+        ip->i_height = 1;
         di->di_height = cpu_to_be16(1);
 
 out_brelse:
@@ -176,114 +175,13 @@ out:
         return error;
 }
 
-/**
- * calc_tree_height - Calculate the height of a metadata tree
- * @ip: The GFS2 inode
- * @size: The proposed size of the file
- *
- * Work out how tall a metadata tree needs to be in order to accommodate a
- * file of a particular size. If size is less than the current size of
- * the inode, then the current size of the inode is used instead of the
- * supplied one.
- *
- * Returns: the height the tree should be
- */
-
-static unsigned int calc_tree_height(struct gfs2_inode *ip, u64 size)
-{
-        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        u64 *arr;
-        unsigned int max, height;
-
-        if (ip->i_di.di_size > size)
-                size = ip->i_di.di_size;
-
-        if (gfs2_is_dir(ip)) {
-                arr = sdp->sd_jheightsize;
-                max = sdp->sd_max_jheight;
-        } else {
-                arr = sdp->sd_heightsize;
-                max = sdp->sd_max_height;
-        }
-
-        for (height = 0; height < max; height++)
-                if (arr[height] >= size)
-                        break;
-
-        return height;
-}
-
-/**
- * build_height - Build a metadata tree of the requested height
- * @ip: The GFS2 inode
- * @height: The height to build to
- *
- *
- * Returns: errno
- */
-
-static int build_height(struct inode *inode, unsigned height)
-{
-        struct gfs2_inode *ip = GFS2_I(inode);
-        unsigned new_height = height - ip->i_di.di_height;
-        struct buffer_head *dibh;
-        struct buffer_head *blocks[GFS2_MAX_META_HEIGHT];
-        struct gfs2_dinode *di;
-        int error;
-        __be64 *bp;
-        u64 bn;
-        unsigned n;
-
-        if (height <= ip->i_di.di_height)
-                return 0;
-
-        error = gfs2_meta_inode_buffer(ip, &dibh);
-        if (error)
-                return error;
-
-        for(n = 0; n < new_height; n++) {
-                bn = gfs2_alloc_meta(ip);
-                blocks[n] = gfs2_meta_new(ip->i_gl, bn);
-                gfs2_trans_add_bh(ip->i_gl, blocks[n], 1);
-        }
-
-        n = 0;
-        bn = blocks[0]->b_blocknr;
-        if (new_height > 1) {
-                for(; n < new_height-1; n++) {
-                        gfs2_metatype_set(blocks[n], GFS2_METATYPE_IN,
-                                          GFS2_FORMAT_IN);
-                        gfs2_buffer_clear_tail(blocks[n],
-                                               sizeof(struct gfs2_meta_header));
-                        bp = (__be64 *)(blocks[n]->b_data +
-                                     sizeof(struct gfs2_meta_header));
-                        *bp = cpu_to_be64(blocks[n+1]->b_blocknr);
-                        brelse(blocks[n]);
-                        blocks[n] = NULL;
-                }
-        }
-        gfs2_metatype_set(blocks[n], GFS2_METATYPE_IN, GFS2_FORMAT_IN);
-        gfs2_buffer_copy_tail(blocks[n], sizeof(struct gfs2_meta_header),
-                              dibh, sizeof(struct gfs2_dinode));
-        brelse(blocks[n]);
-        gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-        di = (struct gfs2_dinode *)dibh->b_data;
-        gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
-        *(__be64 *)(di + 1) = cpu_to_be64(bn);
-        ip->i_di.di_height += new_height;
-        ip->i_di.di_blocks += new_height;
-        gfs2_set_inode_blocks(&ip->i_inode);
-        di->di_height = cpu_to_be16(ip->i_di.di_height);
-        di->di_blocks = cpu_to_be64(ip->i_di.di_blocks);
-        brelse(dibh);
-        return error;
-}
 
 /**
  * find_metapath - Find path through the metadata tree
- * @ip: The inode pointer
+ * @sdp: The superblock
  * @mp: The metapath to return the result in
  * @block: The disk block to look up
+ * @height: The pre-calculated height of the metadata tree
  *
  *   This routine returns a struct metapath structure that defines a path
  *   through the metadata of inode "ip" to get to block "block".
@@ -338,21 +236,29 @@ static int build_height(struct inode *inode, unsigned height)
  *
  */
 
-static void find_metapath(struct gfs2_inode *ip, u64 block,
-                          struct metapath *mp)
+static void find_metapath(const struct gfs2_sbd *sdp, u64 block,
+                          struct metapath *mp, unsigned int height)
 {
-        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        u64 b = block;
         unsigned int i;
 
-        for (i = ip->i_di.di_height; i--;)
-                mp->mp_list[i] = do_div(b, sdp->sd_inptrs);
+        for (i = height; i--;)
+                mp->mp_list[i] = do_div(block, sdp->sd_inptrs);
+
+}
 
+static inline unsigned int zero_metapath_length(const struct metapath *mp,
+                                                unsigned height)
+{
+        unsigned int i;
+        for (i = 0; i < height - 1; i++) {
+                if (mp->mp_list[i] != 0)
+                        return i;
+        }
+        return height;
 }
 
 /**
  * metapointer - Return pointer to start of metadata in a buffer
- * @bh: The buffer
  * @height: The metadata height (0 = dinode)
  * @mp: The metapath
  *
@@ -361,93 +267,302 @@ static void find_metapath(struct gfs2_inode *ip, u64 block,
  * metadata tree.
  */
 
-static inline __be64 *metapointer(struct buffer_head *bh, int *boundary,
-                               unsigned int height, const struct metapath *mp)
+static inline __be64 *metapointer(unsigned int height, const struct metapath *mp)
 {
+        struct buffer_head *bh = mp->mp_bh[height];
         unsigned int head_size = (height > 0) ?
                 sizeof(struct gfs2_meta_header) : sizeof(struct gfs2_dinode);
-        __be64 *ptr;
-        *boundary = 0;
-        ptr = ((__be64 *)(bh->b_data + head_size)) + mp->mp_list[height];
-        if (ptr + 1 == (__be64 *)(bh->b_data + bh->b_size))
-                *boundary = 1;
-        return ptr;
+        return ((__be64 *)(bh->b_data + head_size)) + mp->mp_list[height];
 }
 
 /**
- * lookup_block - Get the next metadata block in metadata tree
- * @ip: The GFS2 inode
- * @bh: Buffer containing the pointers to metadata blocks
- * @height: The height of the tree (0 = dinode)
+ * lookup_metapath - Walk the metadata tree to a specific point
+ * @ip: The inode
  * @mp: The metapath
- * @create: Non-zero if we may create a new meatdata block
- * @new: Used to indicate if we did create a new metadata block
- * @block: the returned disk block number
  *
- * Given a metatree, complete to a particular height, checks to see if the next
- * height of the tree exists. If not the next height of the tree is created.
- * The block number of the next height of the metadata tree is returned.
+ * Assumes that the inode's buffer has already been looked up and
+ * hooked onto mp->mp_bh[0] and that the metapath has been initialised
+ * by find_metapath().
+ *
+ * If this function encounters part of the tree which has not been
+ * allocated, it returns the current height of the tree at the point
+ * at which it found the unallocated block. Blocks which are found are
+ * added to the mp->mp_bh[] list.
  *
+ * Returns: error or height of metadata tree
  */
 
-static int lookup_block(struct gfs2_inode *ip, struct buffer_head *bh,
-                        unsigned int height, struct metapath *mp, int create,
-                        int *new, u64 *block)
+static int lookup_metapath(struct gfs2_inode *ip, struct metapath *mp)
 {
-        int boundary;
-        __be64 *ptr = metapointer(bh, &boundary, height, mp);
+        unsigned int end_of_metadata = ip->i_height - 1;
+        unsigned int x;
+        __be64 *ptr;
+        u64 dblock;
+        int ret;
 
-        if (*ptr) {
-                *block = be64_to_cpu(*ptr);
-                return boundary;
-        }
+        for (x = 0; x < end_of_metadata; x++) {
+                ptr = metapointer(x, mp);
+                dblock = be64_to_cpu(*ptr);
+                if (!dblock)
+                        return x + 1;
 
-        *block = 0;
+                ret = gfs2_meta_indirect_buffer(ip, x+1, dblock, 0, &mp->mp_bh[x+1]);
+                if (ret)
+                        return ret;
+        }
 
-        if (!create)
-                return 0;
+        return ip->i_height;
+}
 
-        if (height == ip->i_di.di_height - 1 && !gfs2_is_dir(ip))
-                *block = gfs2_alloc_data(ip);
-        else
-                *block = gfs2_alloc_meta(ip);
+static inline void release_metapath(struct metapath *mp)
+{
+        int i;
 
-        gfs2_trans_add_bh(ip->i_gl, bh, 1);
+        for (i = 0; i < GFS2_MAX_META_HEIGHT; i++) {
+                if (mp->mp_bh[i] == NULL)
+                        break;
+                brelse(mp->mp_bh[i]);
+        }
+}
 
-        *ptr = cpu_to_be64(*block);
-        ip->i_di.di_blocks++;
-        gfs2_set_inode_blocks(&ip->i_inode);
+/**
+ * gfs2_extent_length - Returns length of an extent of blocks
+ * @start: Start of the buffer
+ * @len: Length of the buffer in bytes
+ * @ptr: Current position in the buffer
+ * @limit: Max extent length to return (0 = unlimited)
+ * @eob: Set to 1 if we hit "end of block"
+ *
+ * If the first block is zero (unallocated) it will return the number of
+ * unallocated blocks in the extent, otherwise it will return the number
+ * of contiguous blocks in the extent.
+ *
+ * Returns: The length of the extent (minimum of one block)
+ */
 
-        *new = 1;
-        return 0;
+static inline unsigned int gfs2_extent_length(void *start, unsigned int len, __be64 *ptr, unsigned limit, int *eob)
+{
+        const __be64 *end = (start + len);
+        const __be64 *first = ptr;
+        u64 d = be64_to_cpu(*ptr);
+
+        *eob = 0;
+        do {
+                ptr++;
+                if (ptr >= end)
+                        break;
+                if (limit && --limit == 0)
+                        break;
+                if (d)
+                        d++;
+        } while(be64_to_cpu(*ptr) == d);
+        if (ptr >= end)
+                *eob = 1;
+        return (ptr - first);
 }
 
-static inline void bmap_lock(struct inode *inode, int create)
+static inline void bmap_lock(struct gfs2_inode *ip, int create)
 {
-        struct gfs2_inode *ip = GFS2_I(inode);
         if (create)
                 down_write(&ip->i_rw_mutex);
         else
                 down_read(&ip->i_rw_mutex);
 }
 
-static inline void bmap_unlock(struct inode *inode, int create)
+static inline void bmap_unlock(struct gfs2_inode *ip, int create)
 {
-        struct gfs2_inode *ip = GFS2_I(inode);
         if (create)
                 up_write(&ip->i_rw_mutex);
         else
                 up_read(&ip->i_rw_mutex);
 }
 
+static inline __be64 *gfs2_indirect_init(struct metapath *mp,
+                                         struct gfs2_glock *gl, unsigned int i,
+                                         unsigned offset, u64 bn)
+{
+        __be64 *ptr = (__be64 *)(mp->mp_bh[i - 1]->b_data +
+                       ((i > 1) ? sizeof(struct gfs2_meta_header) :
+                                 sizeof(struct gfs2_dinode)));
+        BUG_ON(i < 1);
+        BUG_ON(mp->mp_bh[i] != NULL);
+        mp->mp_bh[i] = gfs2_meta_new(gl, bn);
+        gfs2_trans_add_bh(gl, mp->mp_bh[i], 1);
+        gfs2_metatype_set(mp->mp_bh[i], GFS2_METATYPE_IN, GFS2_FORMAT_IN);
+        gfs2_buffer_clear_tail(mp->mp_bh[i], sizeof(struct gfs2_meta_header));
+        ptr += offset;
+        *ptr = cpu_to_be64(bn);
+        return ptr;
+}
+
+enum alloc_state {
+        ALLOC_DATA = 0,
+        ALLOC_GROW_DEPTH = 1,
+        ALLOC_GROW_HEIGHT = 2,
+        /* ALLOC_UNSTUFF = 3,   TBD and rather complicated */
+};
+
+/**
+ * gfs2_bmap_alloc - Build a metadata tree of the requested height
+ * @inode: The GFS2 inode
+ * @lblock: The logical starting block of the extent
+ * @bh_map: This is used to return the mapping details
+ * @mp: The metapath
+ * @sheight: The starting height (i.e. whats already mapped)
+ * @height: The height to build to
+ * @maxlen: The max number of data blocks to alloc
+ *
+ * In this routine we may have to alloc:
+ *   i) Indirect blocks to grow the metadata tree height
+ *  ii) Indirect blocks to fill in lower part of the metadata tree
+ * iii) Data blocks
+ *
+ * The function is in two parts. The first part works out the total
+ * number of blocks which we need. The second part does the actual
+ * allocation asking for an extent at a time (if enough contiguous free
+ * blocks are available, there will only be one request per bmap call)
+ * and uses the state machine to initialise the blocks in order.
+ *
+ * Returns: errno on error
+ */
+
+static int gfs2_bmap_alloc(struct inode *inode, const sector_t lblock,
+                           struct buffer_head *bh_map, struct metapath *mp,
+                           const unsigned int sheight,
+                           const unsigned int height,
+                           const unsigned int maxlen)
+{
+        struct gfs2_inode *ip = GFS2_I(inode);
+        struct gfs2_sbd *sdp = GFS2_SB(inode);
+        struct buffer_head *dibh = mp->mp_bh[0];
+        u64 bn, dblock = 0;
+        unsigned n, i, blks, alloced = 0, iblks = 0, zmpl = 0;
+        unsigned dblks = 0;
+        unsigned ptrs_per_blk;
+        const unsigned end_of_metadata = height - 1;
+        int eob = 0;
+        enum alloc_state state;
+        __be64 *ptr;
+        __be64 zero_bn = 0;
+
+        BUG_ON(sheight < 1);
+        BUG_ON(dibh == NULL);
+
+        gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+
+        if (height == sheight) {
+                struct buffer_head *bh;
+                /* Bottom indirect block exists, find unalloced extent size */
+                ptr = metapointer(end_of_metadata, mp);
+                bh = mp->mp_bh[end_of_metadata];
+                dblks = gfs2_extent_length(bh->b_data, bh->b_size, ptr, maxlen,
+                                           &eob);
+                BUG_ON(dblks < 1);
+                state = ALLOC_DATA;
+        } else {
+                /* Need to allocate indirect blocks */
+                ptrs_per_blk = height > 1 ? sdp->sd_inptrs : sdp->sd_diptrs;
+                dblks = min(maxlen, ptrs_per_blk - mp->mp_list[end_of_metadata]);
+                if (height == ip->i_height) {
+                        /* Writing into existing tree, extend tree down */
+                        iblks = height - sheight;
+                        state = ALLOC_GROW_DEPTH;
+                } else {
+                        /* Building up tree height */
+                        state = ALLOC_GROW_HEIGHT;
+                        iblks = height - ip->i_height;
+                        zmpl = zero_metapath_length(mp, height);
+                        iblks -= zmpl;
+                        iblks += height;
+                }
+        }
+
+        /* start of the second part of the function (state machine) */
+
+        blks = dblks + iblks;
+        i = sheight;
+        do {
+                n = blks - alloced;
+                bn = gfs2_alloc_block(ip, &n);
+                alloced += n;
+                if (state != ALLOC_DATA || gfs2_is_jdata(ip))
+                        gfs2_trans_add_unrevoke(sdp, bn, n);
+                switch (state) {
+                /* Growing height of tree */
+                case ALLOC_GROW_HEIGHT:
+                        if (i == 1) {
+                                ptr = (__be64 *)(dibh->b_data +
+                                                 sizeof(struct gfs2_dinode));
+                                zero_bn = *ptr;
+                        }
+                        for (; i - 1 < height - ip->i_height && n > 0; i++, n--)
+                                gfs2_indirect_init(mp, ip->i_gl, i, 0, bn++);
+                        if (i - 1 == height - ip->i_height) {
+                                i--;
+                                gfs2_buffer_copy_tail(mp->mp_bh[i],
+                                                sizeof(struct gfs2_meta_header),
+                                                dibh, sizeof(struct gfs2_dinode));
+                                gfs2_buffer_clear_tail(dibh,
+                                                sizeof(struct gfs2_dinode) +
+                                                sizeof(__be64));
+                                ptr = (__be64 *)(mp->mp_bh[i]->b_data +
+                                        sizeof(struct gfs2_meta_header));
+                                *ptr = zero_bn;
+                                state = ALLOC_GROW_DEPTH;
+                                for(i = zmpl; i < height; i++) {
+                                        if (mp->mp_bh[i] == NULL)
+                                                break;
+                                        brelse(mp->mp_bh[i]);
+                                        mp->mp_bh[i] = NULL;
+                                }
+                                i = zmpl;
+                        }
+                        if (n == 0)
+                                break;
+                /* Branching from existing tree */
+                case ALLOC_GROW_DEPTH:
+                        if (i > 1 && i < height)
+                                gfs2_trans_add_bh(ip->i_gl, mp->mp_bh[i-1], 1);
+                        for (; i < height && n > 0; i++, n--)
+                                gfs2_indirect_init(mp, ip->i_gl, i,
+                                                   mp->mp_list[i-1], bn++);
+                        if (i == height)
+                                state = ALLOC_DATA;
+                        if (n == 0)
+                                break;
+                /* Tree complete, adding data blocks */
+                case ALLOC_DATA:
+                        BUG_ON(n > dblks);
+                        BUG_ON(mp->mp_bh[end_of_metadata] == NULL);
+                        gfs2_trans_add_bh(ip->i_gl, mp->mp_bh[end_of_metadata], 1);
+                        dblks = n;
+                        ptr = metapointer(end_of_metadata, mp);
+                        dblock = bn;
+                        while (n-- > 0)
+                                *ptr++ = cpu_to_be64(bn++);
+                        break;
+                }
+        } while (state != ALLOC_DATA);
+
+        ip->i_height = height;
+        gfs2_add_inode_blocks(&ip->i_inode, alloced);
+        gfs2_dinode_out(ip, mp->mp_bh[0]->b_data);
+        map_bh(bh_map, inode->i_sb, dblock);
+        bh_map->b_size = dblks << inode->i_blkbits;
+        set_buffer_new(bh_map);
+        return 0;
+}
+
 /**
  * gfs2_block_map - Map a block from an inode to a disk block
  * @inode: The inode
  * @lblock: The logical block number
  * @bh_map: The bh to be mapped
+ * @create: True if its ok to alloc blocks to satify the request
  *
- * Find the block number on the current device which corresponds to an
- * inode's block. If the block had to be created, "new" will be set.
+ * Sets buffer_mapped() if successful, sets buffer_boundary() if a
+ * read of metadata will be required before the next block can be
+ * mapped. Sets buffer_new() if new blocks were allocated.
  *
  * Returns: errno
  */
@@ -457,97 +572,78 @@ int gfs2_block_map(struct inode *inode, sector_t lblock,
 {
         struct gfs2_inode *ip = GFS2_I(inode);
         struct gfs2_sbd *sdp = GFS2_SB(inode);
-        struct buffer_head *bh;
-        unsigned int bsize;
-        unsigned int height;
-        unsigned int end_of_metadata;
-        unsigned int x;
-        int error = 0;
-        int new = 0;
-        u64 dblock = 0;
-        int boundary;
-        unsigned int maxlen = bh_map->b_size >> inode->i_blkbits;
-        struct metapath mp;
+        unsigned int bsize = sdp->sd_sb.sb_bsize;
+        const unsigned int maxlen = bh_map->b_size >> inode->i_blkbits;
+        const u64 *arr = sdp->sd_heightsize;
+        __be64 *ptr;
         u64 size;
-        struct buffer_head *dibh = NULL;
+        struct metapath mp;
+        int ret;
+        int eob;
+        unsigned int len;
+        struct buffer_head *bh;
+        u8 height;
 
         BUG_ON(maxlen == 0);
 
-        if (gfs2_assert_warn(sdp, !gfs2_is_stuffed(ip)))
-                return 0;
-
-        bmap_lock(inode, create);
+        memset(mp.mp_bh, 0, sizeof(mp.mp_bh));
+        bmap_lock(ip, create);
         clear_buffer_mapped(bh_map);
         clear_buffer_new(bh_map);
         clear_buffer_boundary(bh_map);
-        bsize = gfs2_is_dir(ip) ? sdp->sd_jbsize : sdp->sd_sb.sb_bsize;
-        size = (lblock + 1) * bsize;
-
-        if (size > ip->i_di.di_size) {
-                height = calc_tree_height(ip, size);
-                if (ip->i_di.di_height < height) {
-                        if (!create)
-                                goto out_ok;
-        
-                        error = build_height(inode, height);
-                        if (error)
-                                goto out_fail;
-                }
+        if (gfs2_is_dir(ip)) {
+                bsize = sdp->sd_jbsize;
+                arr = sdp->sd_jheightsize;
         }
 
-        find_metapath(ip, lblock, &mp);
-        end_of_metadata = ip->i_di.di_height - 1;
-        error = gfs2_meta_inode_buffer(ip, &bh);
-        if (error)
-                goto out_fail;
-        dibh = bh;
-        get_bh(dibh);
+        ret = gfs2_meta_inode_buffer(ip, &mp.mp_bh[0]);
+        if (ret)
+                goto out;
 
-        for (x = 0; x < end_of_metadata; x++) {
-                lookup_block(ip, bh, x, &mp, create, &new, &dblock);
-                brelse(bh);
-                if (!dblock)
-                        goto out_ok;
+        height = ip->i_height;
+        size = (lblock + 1) * bsize;
+        while (size > arr[height])
+                height++;
+        find_metapath(sdp, lblock, &mp, height);
+        ret = 1;
+        if (height > ip->i_height || gfs2_is_stuffed(ip))
+                goto do_alloc;
+        ret = lookup_metapath(ip, &mp);
+        if (ret < 0)
+                goto out;
+        if (ret != ip->i_height)
+                goto do_alloc;
+        ptr = metapointer(ip->i_height - 1, &mp);
+        if (*ptr == 0)
+                goto do_alloc;
+        map_bh(bh_map, inode->i_sb, be64_to_cpu(*ptr));
+        bh = mp.mp_bh[ip->i_height - 1];
+        len = gfs2_extent_length(bh->b_data, bh->b_size, ptr, maxlen, &eob);
+        bh_map->b_size = (len << inode->i_blkbits);
+        if (eob)
+                set_buffer_boundary(bh_map);
+        ret = 0;
+out:
+        release_metapath(&mp);
+        bmap_unlock(ip, create);
+        return ret;
 
-                error = gfs2_meta_indirect_buffer(ip, x+1, dblock, new, &bh);
-                if (error)
-                        goto out_fail;
+do_alloc:
+        /* All allocations are done here, firstly check create flag */
+        if (!create) {
+                BUG_ON(gfs2_is_stuffed(ip));
+                ret = 0;
+                goto out;
         }
 
-        boundary = lookup_block(ip, bh, end_of_metadata, &mp, create, &new, &dblock);
-        if (dblock) {
-                map_bh(bh_map, inode->i_sb, dblock);
-                if (boundary)
-                        set_buffer_boundary(bh_map);
-                if (new) {
-                        gfs2_trans_add_bh(ip->i_gl, dibh, 1);
-                        gfs2_dinode_out(ip, dibh->b_data);
-                        set_buffer_new(bh_map);
-                        goto out_brelse;
-                }
-                while(--maxlen && !buffer_boundary(bh_map)) {
-                        u64 eblock;
-
-                        mp.mp_list[end_of_metadata]++;
-                        boundary = lookup_block(ip, bh, end_of_metadata, &mp, 0, &new, &eblock);
-                        if (eblock != ++dblock)
-                                break;
-                        bh_map->b_size += (1 << inode->i_blkbits);
-                        if (boundary)
-                                set_buffer_boundary(bh_map);
-                }
-        }
-out_brelse:
-        brelse(bh);
-out_ok:
-        error = 0;
-out_fail:
-        if (dibh)
-                brelse(dibh);
-        bmap_unlock(inode, create);
-        return error;
+        /* At this point ret is the tree depth of already allocated blocks */
+        ret = gfs2_bmap_alloc(inode, lblock, bh_map, &mp, ret, height, maxlen);
+        goto out;
 }
 
+/*
+ * Deprecated: do not use in new code
+ */
 int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsigned *extlen)
 {
         struct buffer_head bh = { .b_state = 0, .b_blocknr = 0 };
@@ -558,7 +654,7 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi
         BUG_ON(!dblock);
         BUG_ON(!new);
 
-        bh.b_size = 1 << (inode->i_blkbits + 5);
+        bh.b_size = 1 << (inode->i_blkbits + (create ? 0 : 5));
         ret = gfs2_block_map(inode, lblock, &bh, create);
         *extlen = bh.b_size >> inode->i_blkbits;
         *dblock = bh.b_blocknr;
@@ -621,7 +717,7 @@ static int recursive_scan(struct gfs2_inode *ip, struct buffer_head *dibh,
         if (error)
                 goto out;
 
-        if (height < ip->i_di.di_height - 1)
+        if (height < ip->i_height - 1)
                 for (; top < bottom; top++, first = 0) {
                         if (!*top)
                                 continue;
@@ -679,7 +775,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
                 sm->sm_first = 0;
         }
 
-        metadata = (height != ip->i_di.di_height - 1);
+        metadata = (height != ip->i_height - 1);
         if (metadata)
                 revokes = (height) ? sdp->sd_inptrs : sdp->sd_diptrs;
 
@@ -713,7 +809,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
         else
                 goto out; /* Nothing to do */
 
-        gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE, 0);
+        gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE);
 
         for (x = 0; x < rlist.rl_rgrps; x++) {
                 struct gfs2_rgrpd *rgd;
@@ -760,10 +856,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
                 }
 
                 *p = 0;
-                if (!ip->i_di.di_blocks)
-                        gfs2_consist_inode(ip);
-                ip->i_di.di_blocks--;
-                gfs2_set_inode_blocks(&ip->i_inode);
+                gfs2_add_inode_blocks(&ip->i_inode, -1);
         }
         if (bstart) {
                 if (metadata)
@@ -804,19 +897,16 @@ static int do_grow(struct gfs2_inode *ip, u64 size)
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
         struct gfs2_alloc *al;
         struct buffer_head *dibh;
-        unsigned int h;
         int error;
 
         al = gfs2_alloc_get(ip);
+        if (!al)
+                return -ENOMEM;
 
-        error = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+        error = gfs2_quota_lock_check(ip);
         if (error)
                 goto out;
 
-        error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
-        if (error)
-                goto out_gunlock_q;
-
         al->al_requested = sdp->sd_max_height + RES_DATA;
 
         error = gfs2_inplace_reserve(ip);
@@ -829,34 +919,25 @@ static int do_grow(struct gfs2_inode *ip, u64 size)
         if (error)
                 goto out_ipres;
 
+        error = gfs2_meta_inode_buffer(ip, &dibh);
+        if (error)
+                goto out_end_trans;
+
         if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)) {
                 if (gfs2_is_stuffed(ip)) {
                         error = gfs2_unstuff_dinode(ip, NULL);
                         if (error)
-                                goto out_end_trans;
-                }
-
-                h = calc_tree_height(ip, size);
-                if (ip->i_di.di_height < h) {
-                        down_write(&ip->i_rw_mutex);
-                        error = build_height(&ip->i_inode, h);
-                        up_write(&ip->i_rw_mutex);
-                        if (error)
-                                goto out_end_trans;
+                                goto out_brelse;
                 }
         }
 
         ip->i_di.di_size = size;
         ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
-
-        error = gfs2_meta_inode_buffer(ip, &dibh);
-        if (error)
-                goto out_end_trans;
-
         gfs2_trans_add_bh(ip->i_gl, dibh, 1);
         gfs2_dinode_out(ip, dibh->b_data);
-        brelse(dibh);
 
+out_brelse:
+        brelse(dibh);
 out_end_trans:
         gfs2_trans_end(sdp);
 out_ipres:
@@ -986,7 +1067,8 @@ out:
 
 static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
 {
-        unsigned int height = ip->i_di.di_height;
+        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+        unsigned int height = ip->i_height;
         u64 lblock;
         struct metapath mp;
         int error;
@@ -994,10 +1076,11 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
         if (!size)
                 lblock = 0;
         else
-                lblock = (size - 1) >> GFS2_SB(&ip->i_inode)->sd_sb.sb_bsize_shift;
+                lblock = (size - 1) >> sdp->sd_sb.sb_bsize_shift;
 
-        find_metapath(ip, lblock, &mp);
-        gfs2_alloc_get(ip);
+        find_metapath(sdp, lblock, &mp, ip->i_height);
+        if (!gfs2_alloc_get(ip))
+                return -ENOMEM;
 
         error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
         if (error)
@@ -1037,10 +1120,8 @@ static int trunc_end(struct gfs2_inode *ip)
                 goto out;
 
         if (!ip->i_di.di_size) {
-                ip->i_di.di_height = 0;
-                ip->i_di.di_goal_meta =
-                        ip->i_di.di_goal_data =
-                        ip->i_no_addr;
+                ip->i_height = 0;
+                ip->i_goal = ip->i_no_addr;
                 gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
         }
         ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;
@@ -1197,10 +1278,9 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
                               unsigned int len, int *alloc_required)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        u64 lblock, lblock_stop, dblock;
-        u32 extlen;
-        int new = 0;
-        int error = 0;
+        struct buffer_head bh;
+        unsigned int shift;
+        u64 lblock, lblock_stop, size;
 
         *alloc_required = 0;
 
@@ -1214,6 +1294,8 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
                 return 0;
         }
 
+        *alloc_required = 1;
+        shift = sdp->sd_sb.sb_bsize_shift;
         if (gfs2_is_dir(ip)) {
                 unsigned int bsize = sdp->sd_jbsize;
                 lblock = offset;
@@ -1221,27 +1303,25 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,
                 lblock_stop = offset + len + bsize - 1;
                 do_div(lblock_stop, bsize);
         } else {
-                unsigned int shift = sdp->sd_sb.sb_bsize_shift;
                 u64 end_of_file = (ip->i_di.di_size + sdp->sd_sb.sb_bsize - 1) >> shift;
                 lblock = offset >> shift;
                 lblock_stop = (offset + len + sdp->sd_sb.sb_bsize - 1) >> shift;
-                if (lblock_stop > end_of_file) {
-                        *alloc_required = 1;
+                if (lblock_stop > end_of_file)
                         return 0;
-                }
         }
 
-        for (; lblock < lblock_stop; lblock += extlen) {
-                error = gfs2_extent_map(&ip->i_inode, lblock, &new, &dblock, &extlen);
-                if (error)
-                        return error;
-
-                if (!dblock) {
-                        *alloc_required = 1;
+        size = (lblock_stop - lblock) << shift;
+        do {
+                bh.b_state = 0;
+                bh.b_size = size;
+                gfs2_block_map(&ip->i_inode, lblock, &bh, 0);
+                if (!buffer_mapped(&bh))
                         return 0;
-                }
-        }
+                size -= bh.b_size;
+                lblock += (bh.b_size >> ip->i_inode.i_blkbits);
+        } while(size > 0);
 
+        *alloc_required = 0;
         return 0;
 }
 
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index c34709512b19..eed040d8ba3a 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -159,6 +159,7 @@ static int gfs2_dir_write_data(struct gfs2_inode *ip, const char *buf,
         unsigned int o;
         int copied = 0;
         int error = 0;
+        int new = 0;
 
         if (!size)
                 return 0;
@@ -183,7 +184,6 @@ static int gfs2_dir_write_data(struct gfs2_inode *ip, const char *buf,
         while (copied < size) {
                 unsigned int amount;
                 struct buffer_head *bh;
-                int new = 0;
 
                 amount = size - copied;
                 if (amount > sdp->sd_sb.sb_bsize - o)
@@ -757,7 +757,7 @@ static struct gfs2_dirent *gfs2_dirent_search(struct inode *inode,
 
         if (ip->i_di.di_flags & GFS2_DIF_EXHASH) {
                 struct gfs2_leaf *leaf;
-                unsigned hsize = 1 << ip->i_di.di_depth;
+                unsigned hsize = 1 << ip->i_depth;
                 unsigned index;
                 u64 ln;
                 if (hsize * sizeof(u64) != ip->i_di.di_size) {
@@ -765,7 +765,7 @@ static struct gfs2_dirent *gfs2_dirent_search(struct inode *inode,
                         return ERR_PTR(-EIO);
                 }
 
-                index = name->hash >> (32 - ip->i_di.di_depth);
+                index = name->hash >> (32 - ip->i_depth);
                 error = get_first_leaf(ip, index, &bh);
                 if (error)
                         return ERR_PTR(error);
@@ -803,14 +803,15 @@ got_dent:
 static struct gfs2_leaf *new_leaf(struct inode *inode, struct buffer_head **pbh, u16 depth)
 {
         struct gfs2_inode *ip = GFS2_I(inode);
-        u64 bn = gfs2_alloc_meta(ip);
+        unsigned int n = 1;
+        u64 bn = gfs2_alloc_block(ip, &n);
         struct buffer_head *bh = gfs2_meta_new(ip->i_gl, bn);
         struct gfs2_leaf *leaf;
         struct gfs2_dirent *dent;
         struct qstr name = { .name = "", .len = 0, .hash = 0 };
         if (!bh)
                 return NULL;
-
+        gfs2_trans_add_unrevoke(GFS2_SB(inode), bn, 1);
         gfs2_trans_add_bh(ip->i_gl, bh, 1);
         gfs2_metatype_set(bh, GFS2_METATYPE_LF, GFS2_FORMAT_LF);
         leaf = (struct gfs2_leaf *)bh->b_data;
@@ -905,12 +906,11 @@ static int dir_make_exhash(struct inode *inode)
                 *lp = cpu_to_be64(bn);
 
         dip->i_di.di_size = sdp->sd_sb.sb_bsize / 2;
-        dip->i_di.di_blocks++;
-        gfs2_set_inode_blocks(&dip->i_inode);
+        gfs2_add_inode_blocks(&dip->i_inode, 1);
         dip->i_di.di_flags |= GFS2_DIF_EXHASH;
 
         for (x = sdp->sd_hash_ptrs, y = -1; x; x >>= 1, y++) ;
-        dip->i_di.di_depth = y;
+        dip->i_depth = y;
 
         gfs2_dinode_out(dip, dibh->b_data);
 
@@ -941,7 +941,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
         int x, moved = 0;
         int error;
 
-        index = name->hash >> (32 - dip->i_di.di_depth);
+        index = name->hash >> (32 - dip->i_depth);
         error = get_leaf_nr(dip, index, &leaf_no);
         if (error)
                 return error;
@@ -952,7 +952,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
                 return error;
 
         oleaf = (struct gfs2_leaf *)obh->b_data;
-        if (dip->i_di.di_depth == be16_to_cpu(oleaf->lf_depth)) {
+        if (dip->i_depth == be16_to_cpu(oleaf->lf_depth)) {
                 brelse(obh);
                 return 1; /* can't split */
         }
@@ -967,10 +967,10 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
         bn = nbh->b_blocknr;
 
         /*  Compute the start and len of leaf pointers in the hash table.  */
-        len = 1 << (dip->i_di.di_depth - be16_to_cpu(oleaf->lf_depth));
+        len = 1 << (dip->i_depth - be16_to_cpu(oleaf->lf_depth));
         half_len = len >> 1;
         if (!half_len) {
-                printk(KERN_WARNING "di_depth %u lf_depth %u index %u\n", dip->i_di.di_depth, be16_to_cpu(oleaf->lf_depth), index);
+                printk(KERN_WARNING "i_depth %u lf_depth %u index %u\n", dip->i_depth, be16_to_cpu(oleaf->lf_depth), index);
                 gfs2_consist_inode(dip);
                 error = -EIO;
                 goto fail_brelse;
@@ -997,7 +997,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
         kfree(lp);
 
         /*  Compute the divider  */
-        divider = (start + half_len) << (32 - dip->i_di.di_depth);
+        divider = (start + half_len) << (32 - dip->i_depth);
 
         /*  Copy the entries  */
         dirent_first(dip, obh, &dent);
@@ -1021,13 +1021,13 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
 
                         new->de_inum = dent->de_inum; /* No endian worries */
                         new->de_type = dent->de_type; /* No endian worries */
-                        nleaf->lf_entries = cpu_to_be16(be16_to_cpu(nleaf->lf_entries)+1);
+                        be16_add_cpu(&nleaf->lf_entries, 1);
 
                         dirent_del(dip, obh, prev, dent);
 
                         if (!oleaf->lf_entries)
                                 gfs2_consist_inode(dip);
-                        oleaf->lf_entries = cpu_to_be16(be16_to_cpu(oleaf->lf_entries)-1);
+                        be16_add_cpu(&oleaf->lf_entries, -1);
 
                         if (!prev)
                                 prev = dent;
@@ -1044,8 +1044,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
         error = gfs2_meta_inode_buffer(dip, &dibh);
         if (!gfs2_assert_withdraw(GFS2_SB(&dip->i_inode), !error)) {
                 gfs2_trans_add_bh(dip->i_gl, dibh, 1);
-                dip->i_di.di_blocks++;
-                gfs2_set_inode_blocks(&dip->i_inode);
+                gfs2_add_inode_blocks(&dip->i_inode, 1);
                 gfs2_dinode_out(dip, dibh->b_data);
                 brelse(dibh);
         }
@@ -1082,7 +1081,7 @@ static int dir_double_exhash(struct gfs2_inode *dip)
         int x;
         int error = 0;
 
-        hsize = 1 << dip->i_di.di_depth;
+        hsize = 1 << dip->i_depth;
         if (hsize * sizeof(u64) != dip->i_di.di_size) {
                 gfs2_consist_inode(dip);
                 return -EIO;
@@ -1090,7 +1089,7 @@ static int dir_double_exhash(struct gfs2_inode *dip)
 
         /*  Allocate both the "from" and "to" buffers in one big chunk  */
 
-        buf = kcalloc(3, sdp->sd_hash_bsize, GFP_KERNEL | __GFP_NOFAIL);
+        buf = kcalloc(3, sdp->sd_hash_bsize, GFP_NOFS | __GFP_NOFAIL);
 
         for (block = dip->i_di.di_size >> sdp->sd_hash_bsize_shift; block--;) {
                 error = gfs2_dir_read_data(dip, (char *)buf,
@@ -1125,7 +1124,7 @@ static int dir_double_exhash(struct gfs2_inode *dip)
 
         error = gfs2_meta_inode_buffer(dip, &dibh);
         if (!gfs2_assert_withdraw(sdp, !error)) {
-                dip->i_di.di_depth++;
+                dip->i_depth++;
                 gfs2_dinode_out(dip, dibh->b_data);
                 brelse(dibh);
         }
@@ -1370,16 +1369,16 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
         int error = 0;
         unsigned depth = 0;
 
-        hsize = 1 << dip->i_di.di_depth;
+        hsize = 1 << dip->i_depth;
         if (hsize * sizeof(u64) != dip->i_di.di_size) {
                 gfs2_consist_inode(dip);
                 return -EIO;
         }
 
         hash = gfs2_dir_offset2hash(*offset);
-        index = hash >> (32 - dip->i_di.di_depth);
+        index = hash >> (32 - dip->i_depth);
 
-        lp = kmalloc(sdp->sd_hash_bsize, GFP_KERNEL);
+        lp = kmalloc(sdp->sd_hash_bsize, GFP_NOFS);
         if (!lp)
                 return -ENOMEM;
 
@@ -1405,7 +1404,7 @@ static int dir_e_read(struct inode *inode, u64 *offset, void *opaque,
                 if (error)
                         break;
 
-                len = 1 << (dip->i_di.di_depth - depth);
+                len = 1 << (dip->i_depth - depth);
                 index = (index & ~(len - 1)) + len;
         }
 
@@ -1444,7 +1443,7 @@ int gfs2_dir_read(struct inode *inode, u64 *offset, void *opaque,
 
         error = -ENOMEM;
         /* 96 is max number of dirents which can be stuffed into an inode */
-        darr = kmalloc(96 * sizeof(struct gfs2_dirent *), GFP_KERNEL);
+        darr = kmalloc(96 * sizeof(struct gfs2_dirent *), GFP_NOFS);
         if (darr) {
                 g.pdent = darr;
                 g.offset = 0;
@@ -1549,7 +1548,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name)
         u32 index;
         u64 bn;
 
-        index = name->hash >> (32 - ip->i_di.di_depth);
+        index = name->hash >> (32 - ip->i_depth);
         error = get_first_leaf(ip, index, &obh);
         if (error)
                 return error;
@@ -1579,8 +1578,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name)
         if (error)
                 return error;
         gfs2_trans_add_bh(ip->i_gl, bh, 1);
-        ip->i_di.di_blocks++;
-        gfs2_set_inode_blocks(&ip->i_inode);
+        gfs2_add_inode_blocks(&ip->i_inode, 1);
         gfs2_dinode_out(ip, bh->b_data);
         brelse(bh);
         return 0;
@@ -1616,7 +1614,7 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name,
                         dent->de_type = cpu_to_be16(type);
                         if (ip->i_di.di_flags & GFS2_DIF_EXHASH) {
                                 leaf = (struct gfs2_leaf *)bh->b_data;
-                                leaf->lf_entries = cpu_to_be16(be16_to_cpu(leaf->lf_entries) + 1);
+                                be16_add_cpu(&leaf->lf_entries, 1);
                         }
                         brelse(bh);
                         error = gfs2_meta_inode_buffer(ip, &bh);
@@ -1641,7 +1639,7 @@ int gfs2_dir_add(struct inode *inode, const struct qstr *name,
                         continue;
                 if (error < 0)
                         break;
-                if (ip->i_di.di_depth < GFS2_DIR_MAX_DEPTH) {
+                if (ip->i_depth < GFS2_DIR_MAX_DEPTH) {
                         error = dir_double_exhash(ip);
                         if (error)
                                 break;
@@ -1785,13 +1783,13 @@ static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data)
         u64 leaf_no;
         int error = 0;
 
-        hsize = 1 << dip->i_di.di_depth;
+        hsize = 1 << dip->i_depth;
         if (hsize * sizeof(u64) != dip->i_di.di_size) {
                 gfs2_consist_inode(dip);
                 return -EIO;
         }
 
-        lp = kmalloc(sdp->sd_hash_bsize, GFP_KERNEL);
+        lp = kmalloc(sdp->sd_hash_bsize, GFP_NOFS);
         if (!lp)
                 return -ENOMEM;
 
@@ -1817,7 +1815,7 @@ static int foreach_leaf(struct gfs2_inode *dip, leaf_call_t lc, void *data)
                         if (error)
                                 goto out;
                         leaf = (struct gfs2_leaf *)bh->b_data;
-                        len = 1 << (dip->i_di.di_depth - be16_to_cpu(leaf->lf_depth));
+                        len = 1 << (dip->i_depth - be16_to_cpu(leaf->lf_depth));
                         brelse(bh);
 
                         error = lc(dip, index, len, leaf_no, data);
@@ -1866,15 +1864,18 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
 
         memset(&rlist, 0, sizeof(struct gfs2_rgrp_list));
 
-        ht = kzalloc(size, GFP_KERNEL);
+        ht = kzalloc(size, GFP_NOFS);
         if (!ht)
                 return -ENOMEM;
 
-        gfs2_alloc_get(dip);
+        if (!gfs2_alloc_get(dip)) {
+                error = -ENOMEM;
+                goto out;
+        }
 
         error = gfs2_quota_hold(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
         if (error)
-                goto out;
+                goto out_put;
 
         error = gfs2_rindex_hold(sdp, &dip->i_alloc->al_ri_gh);
         if (error)
@@ -1894,7 +1895,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
                 l_blocks++;
         }
 
-        gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE, 0);
+        gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE);
 
         for (x = 0; x < rlist.rl_rgrps; x++) {
                 struct gfs2_rgrpd *rgd;
@@ -1921,11 +1922,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
                 brelse(bh);
 
                 gfs2_free_meta(dip, blk, 1);
-
-                if (!dip->i_di.di_blocks)
-                        gfs2_consist_inode(dip);
-                dip->i_di.di_blocks--;
-                gfs2_set_inode_blocks(&dip->i_inode);
+                gfs2_add_inode_blocks(&dip->i_inode, -1);
         }
 
         error = gfs2_dir_write_data(dip, ht, index * sizeof(u64), size);
@@ -1952,8 +1949,9 @@ out_rlist:
         gfs2_glock_dq_uninit(&dip->i_alloc->al_ri_gh);
 out_qs:
         gfs2_quota_unhold(dip);
-out:
+out_put:
         gfs2_alloc_put(dip);
+out:
         kfree(ht);
         return error;
 }
diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c
index bee99704ea10..e3f76f451b0a 100644
--- a/fs/gfs2/eattr.c
+++ b/fs/gfs2/eattr.c
@@ -277,10 +277,7 @@ static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
                 }
 
                 *dataptrs = 0;
-                if (!ip->i_di.di_blocks)
-                        gfs2_consist_inode(ip);
-                ip->i_di.di_blocks--;
-                gfs2_set_inode_blocks(&ip->i_inode);
+                gfs2_add_inode_blocks(&ip->i_inode, -1);
         }
         if (bstart)
                 gfs2_free_meta(ip, bstart, blen);
@@ -321,6 +318,8 @@ static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
         int error;
 
         al = gfs2_alloc_get(ip);
+        if (!al)
+                return -ENOMEM;
 
         error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
         if (error)
@@ -449,7 +448,7 @@ static int ea_get_unstuffed(struct gfs2_inode *ip, struct gfs2_ea_header *ea,
         unsigned int x;
         int error = 0;
 
-        bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_KERNEL);
+        bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS);
         if (!bh)
                 return -ENOMEM;
 
@@ -582,10 +581,11 @@ static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
         struct gfs2_ea_header *ea;
+        unsigned int n = 1;
         u64 block;
 
-        block = gfs2_alloc_meta(ip);
-
+        block = gfs2_alloc_block(ip, &n);
+        gfs2_trans_add_unrevoke(sdp, block, 1);
         *bhp = gfs2_meta_new(ip->i_gl, block);
         gfs2_trans_add_bh(ip->i_gl, *bhp, 1);
         gfs2_metatype_set(*bhp, GFS2_METATYPE_EA, GFS2_FORMAT_EA);
@@ -597,8 +597,7 @@ static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp)
         ea->ea_flags = GFS2_EAFLAG_LAST;
         ea->ea_num_ptrs = 0;
 
-        ip->i_di.di_blocks++;
-        gfs2_set_inode_blocks(&ip->i_inode);
+        gfs2_add_inode_blocks(&ip->i_inode, 1);
 
         return 0;
 }
@@ -642,15 +641,15 @@ static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea,
                         struct buffer_head *bh;
                         u64 block;
                         int mh_size = sizeof(struct gfs2_meta_header);
+                        unsigned int n = 1;
 
-                        block = gfs2_alloc_meta(ip);
-
+                        block = gfs2_alloc_block(ip, &n);
+                        gfs2_trans_add_unrevoke(sdp, block, 1);
                         bh = gfs2_meta_new(ip->i_gl, block);
                         gfs2_trans_add_bh(ip->i_gl, bh, 1);
                         gfs2_metatype_set(bh, GFS2_METATYPE_ED, GFS2_FORMAT_ED);
 
-                        ip->i_di.di_blocks++;
-                        gfs2_set_inode_blocks(&ip->i_inode);
+                        gfs2_add_inode_blocks(&ip->i_inode, 1);
 
                         copy = data_len > sdp->sd_jbsize ? sdp->sd_jbsize :
                                                            data_len;
@@ -684,15 +683,13 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er,
         int error;
 
         al = gfs2_alloc_get(ip);
+        if (!al)
+                return -ENOMEM;
 
-        error = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+        error = gfs2_quota_lock_check(ip);
         if (error)
                 goto out;
 
-        error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
-        if (error)
-                goto out_gunlock_q;
-
         al->al_requested = blks;
 
         error = gfs2_inplace_reserve(ip);
@@ -966,9 +963,9 @@ static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er,
                 gfs2_trans_add_bh(ip->i_gl, indbh, 1);
         } else {
                 u64 blk;
-
-                blk = gfs2_alloc_meta(ip);
-
+                unsigned int n = 1;
+                blk = gfs2_alloc_block(ip, &n);
+                gfs2_trans_add_unrevoke(sdp, blk, 1);
                 indbh = gfs2_meta_new(ip->i_gl, blk);
                 gfs2_trans_add_bh(ip->i_gl, indbh, 1);
                 gfs2_metatype_set(indbh, GFS2_METATYPE_IN, GFS2_FORMAT_IN);
@@ -978,8 +975,7 @@ static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er,
                 *eablk = cpu_to_be64(ip->i_di.di_eattr);
                 ip->i_di.di_eattr = blk;
                 ip->i_di.di_flags |= GFS2_DIF_EA_INDIRECT;
-                ip->i_di.di_blocks++;
-                gfs2_set_inode_blocks(&ip->i_inode);
+                gfs2_add_inode_blocks(&ip->i_inode, 1);
 
                 eablk++;
         }
@@ -1210,7 +1206,7 @@ static int ea_acl_chmod_unstuffed(struct gfs2_inode *ip,
         unsigned int x;
         int error;
 
-        bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_KERNEL);
+        bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS);
         if (!bh)
                 return -ENOMEM;
 
@@ -1347,7 +1343,7 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip)
         else
                 goto out;
 
-        gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE, 0);
+        gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE);
 
         for (x = 0; x < rlist.rl_rgrps; x++) {
                 struct gfs2_rgrpd *rgd;
@@ -1387,10 +1383,7 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip)
                 }
 
                 *eablk = 0;
-                if (!ip->i_di.di_blocks)
-                        gfs2_consist_inode(ip);
-                ip->i_di.di_blocks--;
-                gfs2_set_inode_blocks(&ip->i_inode);
+                gfs2_add_inode_blocks(&ip->i_inode, -1);
         }
         if (bstart)
                 gfs2_free_meta(ip, bstart, blen);
@@ -1442,10 +1435,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
         gfs2_free_meta(ip, ip->i_di.di_eattr, 1);
 
         ip->i_di.di_eattr = 0;
-        if (!ip->i_di.di_blocks)
-                gfs2_consist_inode(ip);
-        ip->i_di.di_blocks--;
-        gfs2_set_inode_blocks(&ip->i_inode);
+        gfs2_add_inode_blocks(&ip->i_inode, -1);
 
         error = gfs2_meta_inode_buffer(ip, &dibh);
         if (!error) {
@@ -1474,6 +1464,8 @@ int gfs2_ea_dealloc(struct gfs2_inode *ip)
         int error;
 
         al = gfs2_alloc_get(ip);
+        if (!al)
+                return -ENOMEM;
 
         error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
         if (error)
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 7175a4d06435..d636b3e80f5d 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -35,7 +35,6 @@
 #include "glock.h"
 #include "glops.h"
 #include "inode.h"
-#include "lm.h"
 #include "lops.h"
 #include "meta_io.h"
 #include "quota.h"
@@ -183,7 +182,8 @@ static void glock_free(struct gfs2_glock *gl)
         struct gfs2_sbd *sdp = gl->gl_sbd;
         struct inode *aspace = gl->gl_aspace;
 
-        gfs2_lm_put_lock(sdp, gl->gl_lock);
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                sdp->sd_lockstruct.ls_ops->lm_put_lock(gl->gl_lock);
 
         if (aspace)
                 gfs2_aspace_put(aspace);
@@ -197,7 +197,7 @@ static void glock_free(struct gfs2_glock *gl)
  *
  */
 
-void gfs2_glock_hold(struct gfs2_glock *gl)
+static void gfs2_glock_hold(struct gfs2_glock *gl)
 {
         atomic_inc(&gl->gl_ref);
 }
@@ -293,6 +293,16 @@ static void glock_work_func(struct work_struct *work)
         gfs2_glock_put(gl);
 }
 
+static int gfs2_lm_get_lock(struct gfs2_sbd *sdp, struct lm_lockname *name,
+                     void **lockp)
+{
+        int error = -EIO;
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                error = sdp->sd_lockstruct.ls_ops->lm_get_lock(
+                                sdp->sd_lockstruct.ls_lockspace, name, lockp);
+        return error;
+}
+
 /**
  * gfs2_glock_get() - Get a glock, or create one if one doesn't exist
  * @sdp: The GFS2 superblock
@@ -338,8 +348,6 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
         gl->gl_ip = 0;
         gl->gl_ops = glops;
         gl->gl_req_gh = NULL;
-        gl->gl_req_bh = NULL;
-        gl->gl_vn = 0;
         gl->gl_stamp = jiffies;
         gl->gl_tchange = jiffies;
         gl->gl_object = NULL;
@@ -595,11 +603,12 @@ static void run_queue(struct gfs2_glock *gl)
                         blocked = rq_mutex(gh);
                 } else if (test_bit(GLF_DEMOTE, &gl->gl_flags)) {
                         blocked = rq_demote(gl);
-                        if (gl->gl_waiters2 && !blocked) {
+                        if (test_bit(GLF_WAITERS2, &gl->gl_flags) &&
+                                     !blocked) {
                                 set_bit(GLF_DEMOTE, &gl->gl_flags);
                                 gl->gl_demote_state = LM_ST_UNLOCKED;
                         }
-                        gl->gl_waiters2 = 0;
+                        clear_bit(GLF_WAITERS2, &gl->gl_flags);
                 } else if (!list_empty(&gl->gl_waiters3)) {
                         gh = list_entry(gl->gl_waiters3.next,
                                         struct gfs2_holder, gh_list);
@@ -710,7 +719,7 @@ static void handle_callback(struct gfs2_glock *gl, unsigned int state,
         } else if (gl->gl_demote_state != LM_ST_UNLOCKED &&
                         gl->gl_demote_state != state) {
                 if (test_bit(GLF_DEMOTE_IN_PROGRESS,  &gl->gl_flags)) 
-                        gl->gl_waiters2 = 1;
+                        set_bit(GLF_WAITERS2, &gl->gl_flags);
                 else 
                         gl->gl_demote_state = LM_ST_UNLOCKED;
         }
@@ -743,6 +752,43 @@ static void state_change(struct gfs2_glock *gl, unsigned int new_state)
 }
 
 /**
+ * drop_bh - Called after a lock module unlock completes
+ * @gl: the glock
+ * @ret: the return status
+ *
+ * Doesn't wake up the process waiting on the struct gfs2_holder (if any)
+ * Doesn't drop the reference on the glock the top half took out
+ *
+ */
+
+static void drop_bh(struct gfs2_glock *gl, unsigned int ret)
+{
+        struct gfs2_sbd *sdp = gl->gl_sbd;
+        struct gfs2_holder *gh = gl->gl_req_gh;
+
+        gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
+        gfs2_assert_warn(sdp, list_empty(&gl->gl_holders));
+        gfs2_assert_warn(sdp, !ret);
+
+        state_change(gl, LM_ST_UNLOCKED);
+
+        if (test_and_clear_bit(GLF_CONV_DEADLK, &gl->gl_flags)) {
+                spin_lock(&gl->gl_spin);
+                gh->gh_error = 0;
+                spin_unlock(&gl->gl_spin);
+                gfs2_glock_xmote_th(gl, gl->gl_req_gh);
+                gfs2_glock_put(gl);
+                return;
+        }
+
+        spin_lock(&gl->gl_spin);
+        gfs2_demote_wake(gl);
+        clear_bit(GLF_LOCK, &gl->gl_flags);
+        spin_unlock(&gl->gl_spin);
+        gfs2_glock_put(gl);
+}
+
+/**
  * xmote_bh - Called after the lock module is done acquiring a lock
  * @gl: The glock in question
  * @ret: the int returned from the lock module
@@ -754,25 +800,19 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
         struct gfs2_sbd *sdp = gl->gl_sbd;
         const struct gfs2_glock_operations *glops = gl->gl_ops;
         struct gfs2_holder *gh = gl->gl_req_gh;
-        int prev_state = gl->gl_state;
         int op_done = 1;
 
+        if (!gh && (ret & LM_OUT_ST_MASK) == LM_ST_UNLOCKED) {
+                drop_bh(gl, ret);
+                return;
+        }
+
         gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
         gfs2_assert_warn(sdp, list_empty(&gl->gl_holders));
         gfs2_assert_warn(sdp, !(ret & LM_OUT_ASYNC));
 
         state_change(gl, ret & LM_OUT_ST_MASK);
 
-        if (prev_state != LM_ST_UNLOCKED && !(ret & LM_OUT_CACHEABLE)) {
-                if (glops->go_inval)
-                        glops->go_inval(gl, DIO_METADATA);
-        } else if (gl->gl_state == LM_ST_DEFERRED) {
-                /* We might not want to do this here.
-                   Look at moving to the inode glops. */
-                if (glops->go_inval)
-                        glops->go_inval(gl, 0);
-        }
-
         /*  Deal with each possible exit condition  */
 
         if (!gh) {
@@ -782,7 +822,6 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
                 } else {
                         spin_lock(&gl->gl_spin);
                         if (gl->gl_state != gl->gl_demote_state) {
-                                gl->gl_req_bh = NULL;
                                 spin_unlock(&gl->gl_spin);
                                 gfs2_glock_drop_th(gl);
                                 gfs2_glock_put(gl);
@@ -793,6 +832,14 @@ static void xmote_bh(struct gfs2_glock *gl, unsigned int ret)
                 }
         } else {
                 spin_lock(&gl->gl_spin);
+                if (ret & LM_OUT_CONV_DEADLK) {
+                        gh->gh_error = 0;
+                        set_bit(GLF_CONV_DEADLK, &gl->gl_flags);
+                        spin_unlock(&gl->gl_spin);
+                        gfs2_glock_drop_th(gl);
+                        gfs2_glock_put(gl);
+                        return;
+                }
                 list_del_init(&gh->gh_list);
                 gh->gh_error = -EIO;
                 if (unlikely(test_bit(SDF_SHUTDOWN, &sdp->sd_flags))) 
@@ -824,7 +871,6 @@ out:
         if (op_done) {
                 spin_lock(&gl->gl_spin);
                 gl->gl_req_gh = NULL;
-                gl->gl_req_bh = NULL;
                 clear_bit(GLF_LOCK, &gl->gl_flags);
                 spin_unlock(&gl->gl_spin);
         }
@@ -835,6 +881,17 @@ out:
                 gfs2_holder_wake(gh);
 }
 
+static unsigned int gfs2_lm_lock(struct gfs2_sbd *sdp, void *lock,
+                                 unsigned int cur_state, unsigned int req_state,
+                                 unsigned int flags)
+{
+        int ret = 0;
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                ret = sdp->sd_lockstruct.ls_ops->lm_lock(lock, cur_state,
+                                                         req_state, flags);
+        return ret;
+}
+
 /**
  * gfs2_glock_xmote_th - Call into the lock module to acquire or change a glock
  * @gl: The glock in question
@@ -856,6 +913,8 @@ static void gfs2_glock_xmote_th(struct gfs2_glock *gl, struct gfs2_holder *gh)
 
         if (glops->go_xmote_th)
                 glops->go_xmote_th(gl);
+        if (state == LM_ST_DEFERRED && glops->go_inval)
+                glops->go_inval(gl, DIO_METADATA);
 
         gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
         gfs2_assert_warn(sdp, list_empty(&gl->gl_holders));
@@ -863,7 +922,6 @@ static void gfs2_glock_xmote_th(struct gfs2_glock *gl, struct gfs2_holder *gh)
         gfs2_assert_warn(sdp, state != gl->gl_state);
 
         gfs2_glock_hold(gl);
-        gl->gl_req_bh = xmote_bh;
 
         lck_ret = gfs2_lm_lock(sdp, gl->gl_lock, gl->gl_state, state, lck_flags);
 
@@ -876,49 +934,13 @@ static void gfs2_glock_xmote_th(struct gfs2_glock *gl, struct gfs2_holder *gh)
                 xmote_bh(gl, lck_ret);
 }
 
-/**
- * drop_bh - Called after a lock module unlock completes
- * @gl: the glock
- * @ret: the return status
- *
- * Doesn't wake up the process waiting on the struct gfs2_holder (if any)
- * Doesn't drop the reference on the glock the top half took out
- *
- */
-
-static void drop_bh(struct gfs2_glock *gl, unsigned int ret)
+static unsigned int gfs2_lm_unlock(struct gfs2_sbd *sdp, void *lock,
+                                   unsigned int cur_state)
 {
-        struct gfs2_sbd *sdp = gl->gl_sbd;
-        const struct gfs2_glock_operations *glops = gl->gl_ops;
-        struct gfs2_holder *gh = gl->gl_req_gh;
-
-        gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
-        gfs2_assert_warn(sdp, list_empty(&gl->gl_holders));
-        gfs2_assert_warn(sdp, !ret);
-
-        state_change(gl, LM_ST_UNLOCKED);
-
-        if (glops->go_inval)
-                glops->go_inval(gl, DIO_METADATA);
-
-        if (gh) {
-                spin_lock(&gl->gl_spin);
-                list_del_init(&gh->gh_list);
-                gh->gh_error = 0;
-                spin_unlock(&gl->gl_spin);
-        }
-
-        spin_lock(&gl->gl_spin);
-        gfs2_demote_wake(gl);
-        gl->gl_req_gh = NULL;
-        gl->gl_req_bh = NULL;
-        clear_bit(GLF_LOCK, &gl->gl_flags);
-        spin_unlock(&gl->gl_spin);
-
-        gfs2_glock_put(gl);
-
-        if (gh)
-                gfs2_holder_wake(gh);
+        int ret = 0;
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                ret =  sdp->sd_lockstruct.ls_ops->lm_unlock(lock, cur_state);
+        return ret;
 }
 
 /**
@@ -935,13 +957,14 @@ static void gfs2_glock_drop_th(struct gfs2_glock *gl)
 
         if (glops->go_xmote_th)
                 glops->go_xmote_th(gl);
+        if (glops->go_inval)
+                glops->go_inval(gl, DIO_METADATA);
 
         gfs2_assert_warn(sdp, test_bit(GLF_LOCK, &gl->gl_flags));
         gfs2_assert_warn(sdp, list_empty(&gl->gl_holders));
         gfs2_assert_warn(sdp, gl->gl_state != LM_ST_UNLOCKED);
 
         gfs2_glock_hold(gl);
-        gl->gl_req_bh = drop_bh;
 
         ret = gfs2_lm_unlock(sdp, gl->gl_lock, gl->gl_state);
 
@@ -964,16 +987,17 @@ static void gfs2_glock_drop_th(struct gfs2_glock *gl)
 static void do_cancels(struct gfs2_holder *gh)
 {
         struct gfs2_glock *gl = gh->gh_gl;
+        struct gfs2_sbd *sdp = gl->gl_sbd;
 
         spin_lock(&gl->gl_spin);
 
         while (gl->gl_req_gh != gh &&
                !test_bit(HIF_HOLDER, &gh->gh_iflags) &&
                !list_empty(&gh->gh_list)) {
-                if (gl->gl_req_bh && !(gl->gl_req_gh &&
-                                     (gl->gl_req_gh->gh_flags & GL_NOCANCEL))) {
+                if (!(gl->gl_req_gh && (gl->gl_req_gh->gh_flags & GL_NOCANCEL))) {
                         spin_unlock(&gl->gl_spin);
-                        gfs2_lm_cancel(gl->gl_sbd, gl->gl_lock);
+                        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                                sdp->sd_lockstruct.ls_ops->lm_cancel(gl->gl_lock);
                         msleep(100);
                         spin_lock(&gl->gl_spin);
                 } else {
@@ -1041,7 +1065,6 @@ static int glock_wait_internal(struct gfs2_holder *gh)
 
                 spin_lock(&gl->gl_spin);
                 gl->gl_req_gh = NULL;
-                gl->gl_req_bh = NULL;
                 clear_bit(GLF_LOCK, &gl->gl_flags);
                 run_queue(gl);
                 spin_unlock(&gl->gl_spin);
@@ -1428,6 +1451,14 @@ void gfs2_glock_dq_uninit_m(unsigned int num_gh, struct gfs2_holder *ghs)
                 gfs2_glock_dq_uninit(&ghs[x]);
 }
 
+static int gfs2_lm_hold_lvb(struct gfs2_sbd *sdp, void *lock, char **lvbp)
+{
+        int error = -EIO;
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                error = sdp->sd_lockstruct.ls_ops->lm_hold_lvb(lock, lvbp);
+        return error;
+}
+
 /**
  * gfs2_lvb_hold - attach a LVB from a glock
  * @gl: The glock in question
@@ -1463,12 +1494,15 @@ int gfs2_lvb_hold(struct gfs2_glock *gl)
 
 void gfs2_lvb_unhold(struct gfs2_glock *gl)
 {
+        struct gfs2_sbd *sdp = gl->gl_sbd;
+
         gfs2_glock_hold(gl);
         gfs2_glmutex_lock(gl);
 
         gfs2_assert(gl->gl_sbd, atomic_read(&gl->gl_lvb_count) > 0);
         if (atomic_dec_and_test(&gl->gl_lvb_count)) {
-                gfs2_lm_unhold_lvb(gl->gl_sbd, gl->gl_lock, gl->gl_lvb);
+                if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                        sdp->sd_lockstruct.ls_ops->lm_unhold_lvb(gl->gl_lock, gl->gl_lvb);
                 gl->gl_lvb = NULL;
                 gfs2_glock_put(gl);
         }
@@ -1534,8 +1568,7 @@ void gfs2_glock_cb(void *cb_data, unsigned int type, void *data)
                 gl = gfs2_glock_find(sdp, &async->lc_name);
                 if (gfs2_assert_warn(sdp, gl))
                         return;
-                if (!gfs2_assert_warn(sdp, gl->gl_req_bh))
-                        gl->gl_req_bh(gl, async->lc_ret);
+                xmote_bh(gl, async->lc_ret);
                 if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0)
                         gfs2_glock_put(gl);
                 up_read(&gfs2_umount_flush_sem);
@@ -1594,10 +1627,10 @@ void gfs2_glock_schedule_for_reclaim(struct gfs2_glock *gl)
                 gfs2_glock_hold(gl);
                 list_add(&gl->gl_reclaim, &sdp->sd_reclaim_list);
                 atomic_inc(&sdp->sd_reclaim_count);
-        }
-        spin_unlock(&sdp->sd_reclaim_lock);
-
-        wake_up(&sdp->sd_reclaim_wq);
+                spin_unlock(&sdp->sd_reclaim_lock);
+                wake_up(&sdp->sd_reclaim_wq);
+        } else
+                spin_unlock(&sdp->sd_reclaim_lock);
 }
 
 /**
@@ -1897,7 +1930,6 @@ static int dump_glock(struct glock_iter *gi, struct gfs2_glock *gl)
                 print_dbg(gi, "  gl_owner = -1\n");
         print_dbg(gi, "  gl_ip = %lu\n", gl->gl_ip);
         print_dbg(gi, "  req_gh = %s\n", (gl->gl_req_gh) ? "yes" : "no");
-        print_dbg(gi, "  req_bh = %s\n", (gl->gl_req_bh) ? "yes" : "no");
         print_dbg(gi, "  lvb_count = %d\n", atomic_read(&gl->gl_lvb_count));
         print_dbg(gi, "  object = %s\n", (gl->gl_object) ? "yes" : "no");
         print_dbg(gi, "  reclaim = %s\n",
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index 2f9c6d136b37..cdad3e6f8150 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -32,24 +32,23 @@
 #define GLR_TRYFAILED           13
 #define GLR_CANCELED            14
 
-static inline int gfs2_glock_is_locked_by_me(struct gfs2_glock *gl)
+static inline struct gfs2_holder *gfs2_glock_is_locked_by_me(struct gfs2_glock *gl)
 {
         struct gfs2_holder *gh;
-        int locked = 0;
         struct pid *pid;
 
         /* Look in glock's list of holders for one with current task as owner */
         spin_lock(&gl->gl_spin);
         pid = task_pid(current);
         list_for_each_entry(gh, &gl->gl_holders, gh_list) {
-                if (gh->gh_owner_pid == pid) {
-                        locked = 1;
-                        break;
-                }
+                if (gh->gh_owner_pid == pid)
+                        goto out;
         }
+        gh = NULL;
+out:
         spin_unlock(&gl->gl_spin);
 
-        return locked;
+        return gh;
 }
 
 static inline int gfs2_glock_is_held_excl(struct gfs2_glock *gl)
@@ -79,7 +78,6 @@ static inline int gfs2_glock_is_blocking(struct gfs2_glock *gl)
 int gfs2_glock_get(struct gfs2_sbd *sdp,
                    u64 number, const struct gfs2_glock_operations *glops,
                    int create, struct gfs2_glock **glp);
-void gfs2_glock_hold(struct gfs2_glock *gl);
 int gfs2_glock_put(struct gfs2_glock *gl);
 void gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, unsigned flags,
                       struct gfs2_holder *gh);
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index c663b7a0f410..d31badadef8f 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -126,7 +126,13 @@ static void meta_go_inval(struct gfs2_glock *gl, int flags)
                 return;
 
         gfs2_meta_inval(gl);
-        gl->gl_vn++;
+        if (gl->gl_object == GFS2_I(gl->gl_sbd->sd_rindex))
+                gl->gl_sbd->sd_rindex_uptodate = 0;
+        else if (gl->gl_ops == &gfs2_rgrp_glops && gl->gl_object) {
+                struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object;
+
+                rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
+        }
 }
 
 /**
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 525dcae352d6..9c2c0b90b22a 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -44,7 +44,6 @@ struct gfs2_log_header_host {
 
 struct gfs2_log_operations {
         void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
-        void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
         void (*lo_before_commit) (struct gfs2_sbd *sdp);
         void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
         void (*lo_before_scan) (struct gfs2_jdesc *jd,
@@ -70,7 +69,6 @@ struct gfs2_bitmap {
 };
 
 struct gfs2_rgrp_host {
-        u32 rg_flags;
         u32 rg_free;
         u32 rg_dinodes;
         u64 rg_igeneration;
@@ -87,17 +85,17 @@ struct gfs2_rgrpd {
         u32 rd_data;                    /* num of data blocks in rgrp */
         u32 rd_bitbytes;                /* number of bytes in data bitmaps */
         struct gfs2_rgrp_host rd_rg;
-        u64 rd_rg_vn;
         struct gfs2_bitmap *rd_bits;
         unsigned int rd_bh_count;
         struct mutex rd_mutex;
         u32 rd_free_clone;
         struct gfs2_log_element rd_le;
-        u32 rd_last_alloc_data;
-        u32 rd_last_alloc_meta;
+        u32 rd_last_alloc;
         struct gfs2_sbd *rd_sbd;
-        unsigned long rd_flags;
-#define GFS2_RDF_CHECK        0x0001          /* Need to check for unlinked inodes */
+        unsigned char rd_flags;
+#define GFS2_RDF_CHECK        0x01      /* Need to check for unlinked inodes */
+#define GFS2_RDF_NOALLOC      0x02      /* rg prohibits allocation */
+#define GFS2_RDF_UPTODATE     0x04      /* rg is up to date */
 };
 
 enum gfs2_state_bits {
@@ -168,6 +166,8 @@ enum {
         GLF_DIRTY               = 5,
         GLF_DEMOTE_IN_PROGRESS  = 6,
         GLF_LFLUSH              = 7,
+        GLF_WAITERS2            = 8,
+        GLF_CONV_DEADLK         = 9,
 };
 
 struct gfs2_glock {
@@ -187,18 +187,15 @@ struct gfs2_glock {
         struct list_head gl_holders;
         struct list_head gl_waiters1;   /* HIF_MUTEX */
         struct list_head gl_waiters3;   /* HIF_PROMOTE */
-        int gl_waiters2;                /* GIF_DEMOTE */
 
         const struct gfs2_glock_operations *gl_ops;
 
         struct gfs2_holder *gl_req_gh;
-        gfs2_glop_bh_t gl_req_bh;
 
         void *gl_lock;
         char *gl_lvb;
         atomic_t gl_lvb_count;
 
-        u64 gl_vn;
         unsigned long gl_stamp;
         unsigned long gl_tchange;
         void *gl_object;
@@ -213,6 +210,8 @@ struct gfs2_glock {
         struct delayed_work gl_work;
 };
 
+#define GFS2_MIN_LVB_SIZE 32    /* Min size of LVB that gfs2 supports */
+
 struct gfs2_alloc {
         /* Quota stuff */
 
@@ -241,14 +240,9 @@ enum {
 
 struct gfs2_dinode_host {
         u64 di_size;            /* number of bytes in file */
-        u64 di_blocks;          /* number of blocks in file */
-        u64 di_goal_meta;       /* rgrp to alloc from next */
-        u64 di_goal_data;       /* data block goal */
         u64 di_generation;      /* generation number for NFS */
         u32 di_flags;           /* GFS2_DIF_... */
-        u16 di_height;          /* height of metadata */
         /* These only apply to directories  */
-        u16 di_depth;           /* Number of bits in the table */
         u32 di_entries;         /* The number of entries in the directory */
         u64 di_eattr;           /* extended attribute block number */
 };
@@ -265,9 +259,10 @@ struct gfs2_inode {
         struct gfs2_holder i_iopen_gh;
         struct gfs2_holder i_gh; /* for prepare/commit_write only */
         struct gfs2_alloc *i_alloc;
-        u64 i_last_rg_alloc;
-
+        u64 i_goal;     /* goal block for allocations */
         struct rw_semaphore i_rw_mutex;
+        u8 i_height;
+        u8 i_depth;
 };
 
 /*
@@ -490,9 +485,9 @@ struct gfs2_sbd {
         u32 sd_qc_per_block;
         u32 sd_max_dirres;      /* Max blocks needed to add a directory entry */
         u32 sd_max_height;      /* Max height of a file's metadata tree */
-        u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
+        u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
         u32 sd_max_jheight; /* Max height of journaled file's meta tree */
-        u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
+        u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
 
         struct gfs2_args sd_args;       /* Mount arguments */
         struct gfs2_tune sd_tune;       /* Filesystem tuning structure */
@@ -533,7 +528,7 @@ struct gfs2_sbd {
 
         /* Resource group stuff */
 
-        u64 sd_rindex_vn;
+        int sd_rindex_uptodate;
         spinlock_t sd_rindex_spin;
         struct mutex sd_rindex_mutex;
         struct list_head sd_rindex_list;
@@ -637,9 +632,6 @@ struct gfs2_sbd {
 
         /* Counters */
 
-        atomic_t sd_glock_count;
-        atomic_t sd_glock_held_count;
-        atomic_t sd_inode_count;
         atomic_t sd_reclaimed;
 
         char sd_fsname[GFS2_FSNAME_LEN];
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 37725ade3c51..3a9ef526c308 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -149,7 +149,8 @@ void gfs2_set_iop(struct inode *inode)
         } else if (S_ISLNK(mode)) {
                 inode->i_op = &gfs2_symlink_iops;
         } else {
-                inode->i_op = &gfs2_dev_iops;
+                inode->i_op = &gfs2_file_iops;
+                init_special_inode(inode, inode->i_mode, inode->i_rdev);
         }
 
         unlock_new_inode(inode);
@@ -248,12 +249,10 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
 {
         struct gfs2_dinode_host *di = &ip->i_di;
         const struct gfs2_dinode *str = buf;
+        u16 height, depth;
 
-        if (ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)) {
-                if (gfs2_consist_inode(ip))
-                        gfs2_dinode_print(ip);
-                return -EIO;
-        }
+        if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
+                goto corrupt;
         ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
         ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
         ip->i_inode.i_rdev = 0;
@@ -275,8 +274,7 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
         ip->i_inode.i_nlink = be32_to_cpu(str->di_nlink);
         di->di_size = be64_to_cpu(str->di_size);
         i_size_write(&ip->i_inode, di->di_size);
-        di->di_blocks = be64_to_cpu(str->di_blocks);
-        gfs2_set_inode_blocks(&ip->i_inode);
+        gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
         ip->i_inode.i_atime.tv_sec = be64_to_cpu(str->di_atime);
         ip->i_inode.i_atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
@@ -284,15 +282,20 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
         ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
         ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
 
-        di->di_goal_meta = be64_to_cpu(str->di_goal_meta);
-        di->di_goal_data = be64_to_cpu(str->di_goal_data);
+        ip->i_goal = be64_to_cpu(str->di_goal_meta);
         di->di_generation = be64_to_cpu(str->di_generation);
 
         di->di_flags = be32_to_cpu(str->di_flags);
         gfs2_set_inode_flags(&ip->i_inode);
-        di->di_height = be16_to_cpu(str->di_height);
-
-        di->di_depth = be16_to_cpu(str->di_depth);
+        height = be16_to_cpu(str->di_height);
+        if (unlikely(height > GFS2_MAX_META_HEIGHT))
+                goto corrupt;
+        ip->i_height = (u8)height;
+
+        depth = be16_to_cpu(str->di_depth);
+        if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
+                goto corrupt;
+        ip->i_depth = (u8)depth;
         di->di_entries = be32_to_cpu(str->di_entries);
 
         di->di_eattr = be64_to_cpu(str->di_eattr);
@@ -300,6 +303,10 @@ static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
                 gfs2_set_aops(&ip->i_inode);
 
         return 0;
+corrupt:
+        if (gfs2_consist_inode(ip))
+                gfs2_dinode_print(ip);
+        return -EIO;
 }
 
 /**
@@ -337,13 +344,15 @@ int gfs2_dinode_dealloc(struct gfs2_inode *ip)
         struct gfs2_rgrpd *rgd;
         int error;
 
-        if (ip->i_di.di_blocks != 1) {
+        if (gfs2_get_inode_blocks(&ip->i_inode) != 1) {
                 if (gfs2_consist_inode(ip))
                         gfs2_dinode_print(ip);
                 return -EIO;
         }
 
         al = gfs2_alloc_get(ip);
+        if (!al)
+                return -ENOMEM;
 
         error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
         if (error)
@@ -487,7 +496,7 @@ struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
                 return dir;
         }
 
-        if (gfs2_glock_is_locked_by_me(dip->i_gl) == 0) {
+        if (gfs2_glock_is_locked_by_me(dip->i_gl) == NULL) {
                 error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
                 if (error)
                         return ERR_PTR(error);
@@ -818,7 +827,8 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
         int error;
 
         munge_mode_uid_gid(dip, &mode, &uid, &gid);
-        gfs2_alloc_get(dip);
+        if (!gfs2_alloc_get(dip))
+                return -ENOMEM;
 
         error = gfs2_quota_lock(dip, uid, gid);
         if (error)
@@ -853,6 +863,8 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
         int error;
 
         al = gfs2_alloc_get(dip);
+        if (!al)
+                return -ENOMEM;
 
         error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
         if (error)
@@ -1219,7 +1231,7 @@ int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len)
 
         x = ip->i_di.di_size + 1;
         if (x > *len) {
-                *buf = kmalloc(x, GFP_KERNEL);
+                *buf = kmalloc(x, GFP_NOFS);
                 if (!*buf) {
                         error = -ENOMEM;
                         goto out_brelse;
@@ -1391,21 +1403,21 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
         str->di_gid = cpu_to_be32(ip->i_inode.i_gid);
         str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink);
         str->di_size = cpu_to_be64(di->di_size);
-        str->di_blocks = cpu_to_be64(di->di_blocks);
+        str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode));
         str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec);
         str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec);
         str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec);
 
-        str->di_goal_meta = cpu_to_be64(di->di_goal_meta);
-        str->di_goal_data = cpu_to_be64(di->di_goal_data);
+        str->di_goal_meta = cpu_to_be64(ip->i_goal);
+        str->di_goal_data = cpu_to_be64(ip->i_goal);
         str->di_generation = cpu_to_be64(di->di_generation);
 
         str->di_flags = cpu_to_be32(di->di_flags);
-        str->di_height = cpu_to_be16(di->di_height);
+        str->di_height = cpu_to_be16(ip->i_height);
         str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) &&
                                              !(ip->i_di.di_flags & GFS2_DIF_EXHASH) ?
                                              GFS2_FORMAT_DE : 0);
-        str->di_depth = cpu_to_be16(di->di_depth);
+        str->di_depth = cpu_to_be16(ip->i_depth);
         str->di_entries = cpu_to_be32(di->di_entries);
 
         str->di_eattr = cpu_to_be64(di->di_eattr);
@@ -1423,15 +1435,13 @@ void gfs2_dinode_print(const struct gfs2_inode *ip)
         printk(KERN_INFO "  no_addr = %llu\n",
                (unsigned long long)ip->i_no_addr);
         printk(KERN_INFO "  di_size = %llu\n", (unsigned long long)di->di_size);
-        printk(KERN_INFO "  di_blocks = %llu\n",
-               (unsigned long long)di->di_blocks);
-        printk(KERN_INFO "  di_goal_meta = %llu\n",
-               (unsigned long long)di->di_goal_meta);
-        printk(KERN_INFO "  di_goal_data = %llu\n",
-               (unsigned long long)di->di_goal_data);
+        printk(KERN_INFO "  blocks = %llu\n",
+               (unsigned long long)gfs2_get_inode_blocks(&ip->i_inode));
+        printk(KERN_INFO "  i_goal = %llu\n",
+               (unsigned long long)ip->i_goal);
         printk(KERN_INFO "  di_flags = 0x%.8X\n", di->di_flags);
-        printk(KERN_INFO "  di_height = %u\n", di->di_height);
-        printk(KERN_INFO "  di_depth = %u\n", di->di_depth);
+        printk(KERN_INFO "  i_height = %u\n", ip->i_height);
+        printk(KERN_INFO "  i_depth = %u\n", ip->i_depth);
         printk(KERN_INFO "  di_entries = %u\n", di->di_entries);
         printk(KERN_INFO "  di_eattr = %llu\n",
                (unsigned long long)di->di_eattr);
diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
index d44650662615..580da454b38f 100644
--- a/fs/gfs2/inode.h
+++ b/fs/gfs2/inode.h
@@ -10,9 +10,11 @@
 #ifndef __INODE_DOT_H__
 #define __INODE_DOT_H__
 
+#include "util.h"
+
 static inline int gfs2_is_stuffed(const struct gfs2_inode *ip)
 {
-        return !ip->i_di.di_height;
+        return !ip->i_height;
 }
 
 static inline int gfs2_is_jdata(const struct gfs2_inode *ip)
@@ -37,13 +39,25 @@ static inline int gfs2_is_dir(const struct gfs2_inode *ip)
         return S_ISDIR(ip->i_inode.i_mode);
 }
 
-static inline void gfs2_set_inode_blocks(struct inode *inode)
+static inline void gfs2_set_inode_blocks(struct inode *inode, u64 blocks)
+{
+        inode->i_blocks = blocks <<
+                (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
+}
+
+static inline u64 gfs2_get_inode_blocks(const struct inode *inode)
 {
-        struct gfs2_inode *ip = GFS2_I(inode);
-        inode->i_blocks = ip->i_di.di_blocks <<
+        return inode->i_blocks >>
                 (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
 }
 
+static inline void gfs2_add_inode_blocks(struct inode *inode, s64 change)
+{
+        gfs2_assert(GFS2_SB(inode), (change >= 0 || inode->i_blocks > -change));
+        change *= (GFS2_SB(inode)->sd_sb.sb_bsize/GFS2_BASIC_BLOCK);
+        inode->i_blocks += change;
+}
+
 static inline int gfs2_check_inum(const struct gfs2_inode *ip, u64 no_addr,
                                   u64 no_formal_ino)
 {
diff --git a/fs/gfs2/lm.c b/fs/gfs2/lm.c
deleted file mode 100644
index cfcc39b86a53..000000000000
--- a/fs/gfs2/lm.c
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/completion.h>
-#include <linux/buffer_head.h>
-#include <linux/delay.h>
-#include <linux/gfs2_ondisk.h>
-#include <linux/lm_interface.h>
-
-#include "gfs2.h"
-#include "incore.h"
-#include "glock.h"
-#include "lm.h"
-#include "super.h"
-#include "util.h"
-
-/**
- * gfs2_lm_mount - mount a locking protocol
- * @sdp: the filesystem
- * @args: mount arguements
- * @silent: if 1, don't complain if the FS isn't a GFS2 fs
- *
- * Returns: errno
- */
-
-int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent)
-{
-        char *proto = sdp->sd_proto_name;
-        char *table = sdp->sd_table_name;
-        int flags = 0;
-        int error;
-
-        if (sdp->sd_args.ar_spectator)
-                flags |= LM_MFLAG_SPECTATOR;
-
-        fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table);
-
-        error = gfs2_mount_lockproto(proto, table, sdp->sd_args.ar_hostdata,
-                                     gfs2_glock_cb, sdp,
-                                     GFS2_MIN_LVB_SIZE, flags,
-                                     &sdp->sd_lockstruct, &sdp->sd_kobj);
-        if (error) {
-                fs_info(sdp, "can't mount proto=%s, table=%s, hostdata=%s\n",
-                        proto, table, sdp->sd_args.ar_hostdata);
-                goto out;
-        }
-
-        if (gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_lockspace) ||
-            gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_ops) ||
-            gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_lvb_size >=
-                                  GFS2_MIN_LVB_SIZE)) {
-                gfs2_unmount_lockproto(&sdp->sd_lockstruct);
-                goto out;
-        }
-
-        if (sdp->sd_args.ar_spectator)
-                snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", table);
-        else
-                snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", table,
-                         sdp->sd_lockstruct.ls_jid);
-
-        fs_info(sdp, "Joined cluster. Now mounting FS...\n");
-
-        if ((sdp->sd_lockstruct.ls_flags & LM_LSFLAG_LOCAL) &&
-            !sdp->sd_args.ar_ignore_local_fs) {
-                sdp->sd_args.ar_localflocks = 1;
-                sdp->sd_args.ar_localcaching = 1;
-        }
-
-out:
-        return error;
-}
-
-void gfs2_lm_others_may_mount(struct gfs2_sbd *sdp)
-{
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                sdp->sd_lockstruct.ls_ops->lm_others_may_mount(
-                                        sdp->sd_lockstruct.ls_lockspace);
-}
-
-void gfs2_lm_unmount(struct gfs2_sbd *sdp)
-{
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                gfs2_unmount_lockproto(&sdp->sd_lockstruct);
-}
-
-int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
-{
-        va_list args;
-
-        if (test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
-                return 0;
-
-        va_start(args, fmt);
-        vprintk(fmt, args);
-        va_end(args);
-
-        fs_err(sdp, "about to withdraw this file system\n");
-        BUG_ON(sdp->sd_args.ar_debug);
-
-        fs_err(sdp, "telling LM to withdraw\n");
-        gfs2_withdraw_lockproto(&sdp->sd_lockstruct);
-        fs_err(sdp, "withdrawn\n");
-        dump_stack();
-
-        return -1;
-}
-
-int gfs2_lm_get_lock(struct gfs2_sbd *sdp, struct lm_lockname *name,
-                     void **lockp)
-{
-        int error = -EIO;
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                error = sdp->sd_lockstruct.ls_ops->lm_get_lock(
-                                sdp->sd_lockstruct.ls_lockspace, name, lockp);
-        return error;
-}
-
-void gfs2_lm_put_lock(struct gfs2_sbd *sdp, void *lock)
-{
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                sdp->sd_lockstruct.ls_ops->lm_put_lock(lock);
-}
-
-unsigned int gfs2_lm_lock(struct gfs2_sbd *sdp, void *lock,
-                          unsigned int cur_state, unsigned int req_state,
-                          unsigned int flags)
-{
-        int ret = 0;
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                ret = sdp->sd_lockstruct.ls_ops->lm_lock(lock, cur_state,
-                                                         req_state, flags);
-        return ret;
-}
-
-unsigned int gfs2_lm_unlock(struct gfs2_sbd *sdp, void *lock,
-                            unsigned int cur_state)
-{
-        int ret = 0;
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                ret =  sdp->sd_lockstruct.ls_ops->lm_unlock(lock, cur_state);
-        return ret;
-}
-
-void gfs2_lm_cancel(struct gfs2_sbd *sdp, void *lock)
-{
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                sdp->sd_lockstruct.ls_ops->lm_cancel(lock);
-}
-
-int gfs2_lm_hold_lvb(struct gfs2_sbd *sdp, void *lock, char **lvbp)
-{
-        int error = -EIO;
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                error = sdp->sd_lockstruct.ls_ops->lm_hold_lvb(lock, lvbp);
-        return error;
-}
-
-void gfs2_lm_unhold_lvb(struct gfs2_sbd *sdp, void *lock, char *lvb)
-{
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                sdp->sd_lockstruct.ls_ops->lm_unhold_lvb(lock, lvb);
-}
-
-int gfs2_lm_plock_get(struct gfs2_sbd *sdp, struct lm_lockname *name,
-                      struct file *file, struct file_lock *fl)
-{
-        int error = -EIO;
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                error = sdp->sd_lockstruct.ls_ops->lm_plock_get(
-                                sdp->sd_lockstruct.ls_lockspace, name, file, fl);
-        return error;
-}
-
-int gfs2_lm_plock(struct gfs2_sbd *sdp, struct lm_lockname *name,
-                  struct file *file, int cmd, struct file_lock *fl)
-{
-        int error = -EIO;
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                error = sdp->sd_lockstruct.ls_ops->lm_plock(
-                                sdp->sd_lockstruct.ls_lockspace, name, file, cmd, fl);
-        return error;
-}
-
-int gfs2_lm_punlock(struct gfs2_sbd *sdp, struct lm_lockname *name,
-                    struct file *file, struct file_lock *fl)
-{
-        int error = -EIO;
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                error = sdp->sd_lockstruct.ls_ops->lm_punlock(
-                                sdp->sd_lockstruct.ls_lockspace, name, file, fl);
-        return error;
-}
-
-void gfs2_lm_recovery_done(struct gfs2_sbd *sdp, unsigned int jid,
-                           unsigned int message)
-{
-        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
-                sdp->sd_lockstruct.ls_ops->lm_recovery_done(
-                        sdp->sd_lockstruct.ls_lockspace, jid, message);
-}
-
diff --git a/fs/gfs2/lm.h b/fs/gfs2/lm.h
deleted file mode 100644
index 21cdc30ee08c..000000000000
--- a/fs/gfs2/lm.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#ifndef __LM_DOT_H__
-#define __LM_DOT_H__
-
-struct gfs2_sbd;
-
-#define GFS2_MIN_LVB_SIZE 32
-
-int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent);
-void gfs2_lm_others_may_mount(struct gfs2_sbd *sdp);
-void gfs2_lm_unmount(struct gfs2_sbd *sdp);
-int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
-                                __attribute__ ((format(printf, 2, 3)));
-int gfs2_lm_get_lock(struct gfs2_sbd *sdp, struct lm_lockname *name,
-                     void **lockp);
-void gfs2_lm_put_lock(struct gfs2_sbd *sdp, void *lock);
-unsigned int gfs2_lm_lock(struct gfs2_sbd *sdp, void *lock,
-                         unsigned int cur_state, unsigned int req_state,
-                         unsigned int flags);
-unsigned int gfs2_lm_unlock(struct gfs2_sbd *sdp, void *lock,
-                           unsigned int cur_state);
-void gfs2_lm_cancel(struct gfs2_sbd *sdp, void *lock);
-int gfs2_lm_hold_lvb(struct gfs2_sbd *sdp, void *lock, char **lvbp);
-void gfs2_lm_unhold_lvb(struct gfs2_sbd *sdp, void *lock, char *lvb);
-int gfs2_lm_plock_get(struct gfs2_sbd *sdp, struct lm_lockname *name,
-                      struct file *file, struct file_lock *fl);
-int gfs2_lm_plock(struct gfs2_sbd *sdp, struct lm_lockname *name,
-                  struct file *file, int cmd, struct file_lock *fl);
-int gfs2_lm_punlock(struct gfs2_sbd *sdp, struct lm_lockname *name,
-                    struct file *file, struct file_lock *fl);
-void gfs2_lm_recovery_done(struct gfs2_sbd *sdp, unsigned int jid,
-                           unsigned int message);
-
-#endif /* __LM_DOT_H__ */
diff --git a/fs/gfs2/locking/dlm/lock.c b/fs/gfs2/locking/dlm/lock.c
index 542a797ac89a..cf7ea8abec87 100644
--- a/fs/gfs2/locking/dlm/lock.c
+++ b/fs/gfs2/locking/dlm/lock.c
@@ -137,7 +137,8 @@ static inline unsigned int make_flags(struct gdlm_lock *lp,
 
                 /* Conversion deadlock avoidance by DLM */
 
-                if (!test_bit(LFL_FORCE_PROMOTE, &lp->flags) &&
+                if (!(lp->ls->fsflags & LM_MFLAG_CONV_NODROP) &&
+                    !test_bit(LFL_FORCE_PROMOTE, &lp->flags) &&
                     !(lkf & DLM_LKF_NOQUEUE) &&
                     cur > DLM_LOCK_NL && req > DLM_LOCK_NL && cur != req)
                         lkf |= DLM_LKF_CONVDEADLK;
@@ -164,7 +165,7 @@ static int gdlm_create_lp(struct gdlm_ls *ls, struct lm_lockname *name,
 {
         struct gdlm_lock *lp;
 
-        lp = kzalloc(sizeof(struct gdlm_lock), GFP_KERNEL);
+        lp = kzalloc(sizeof(struct gdlm_lock), GFP_NOFS);
         if (!lp)
                 return -ENOMEM;
 
@@ -382,7 +383,7 @@ static int gdlm_add_lvb(struct gdlm_lock *lp)
 {
         char *lvb;
 
-        lvb = kzalloc(GDLM_LVB_SIZE, GFP_KERNEL);
+        lvb = kzalloc(GDLM_LVB_SIZE, GFP_NOFS);
         if (!lvb)
                 return -ENOMEM;
 
diff --git a/fs/gfs2/locking/dlm/lock_dlm.h b/fs/gfs2/locking/dlm/lock_dlm.h
index 9e8265d28377..58fcf8c5bf39 100644
--- a/fs/gfs2/locking/dlm/lock_dlm.h
+++ b/fs/gfs2/locking/dlm/lock_dlm.h
@@ -183,5 +183,10 @@ int gdlm_plock_get(void *, struct lm_lockname *, struct file *,
                 struct file_lock *);
 int gdlm_punlock(void *, struct lm_lockname *, struct file *,
                 struct file_lock *);
+
+/* mount.c */
+
+extern const struct lm_lockops gdlm_ops;
+
 #endif
 
diff --git a/fs/gfs2/locking/dlm/main.c b/fs/gfs2/locking/dlm/main.c
index a0e7eda643ed..36a225850bd8 100644
--- a/fs/gfs2/locking/dlm/main.c
+++ b/fs/gfs2/locking/dlm/main.c
@@ -11,8 +11,6 @@
 
 #include "lock_dlm.h"
 
-extern struct lm_lockops gdlm_ops;
-
 static int __init init_lock_dlm(void)
 {
         int error;
diff --git a/fs/gfs2/locking/dlm/sysfs.c b/fs/gfs2/locking/dlm/sysfs.c
index a87b09839761..8479da47049c 100644
--- a/fs/gfs2/locking/dlm/sysfs.c
+++ b/fs/gfs2/locking/dlm/sysfs.c
@@ -12,8 +12,6 @@
 
 #include "lock_dlm.h"
 
-extern struct lm_lockops gdlm_ops;
-
 static ssize_t proto_name_show(struct gdlm_ls *ls, char *buf)
 {
         return sprintf(buf, "%s\n", gdlm_ops.lm_proto_name);
diff --git a/fs/gfs2/locking/dlm/thread.c b/fs/gfs2/locking/dlm/thread.c
index 521694fc19d6..e53db6fd28ab 100644
--- a/fs/gfs2/locking/dlm/thread.c
+++ b/fs/gfs2/locking/dlm/thread.c
@@ -135,7 +135,15 @@ static void process_complete(struct gdlm_lock *lp)
                          lp->lksb.sb_status, lp->lockname.ln_type,
                          (unsigned long long)lp->lockname.ln_number,
                          lp->flags);
-                return;
+                if (lp->lksb.sb_status == -EDEADLOCK &&
+                    lp->ls->fsflags & LM_MFLAG_CONV_NODROP) {
+                        lp->req = lp->cur;
+                        acb.lc_ret |= LM_OUT_CONV_DEADLK;
+                        if (lp->cur == DLM_LOCK_IV)
+                                lp->lksb.sb_lkid = 0;
+                        goto out;
+                } else
+                        return;
         }
 
         /*
diff --git a/fs/gfs2/locking/nolock/main.c b/fs/gfs2/locking/nolock/main.c
index d3b8ce6fbbe3..284a5ece8d94 100644
--- a/fs/gfs2/locking/nolock/main.c
+++ b/fs/gfs2/locking/nolock/main.c
@@ -140,7 +140,7 @@ static int nolock_hold_lvb(void *lock, char **lvbp)
         struct nolock_lockspace *nl = lock;
         int error = 0;
 
-        *lvbp = kzalloc(nl->nl_lvb_size, GFP_KERNEL);
+        *lvbp = kzalloc(nl->nl_lvb_size, GFP_NOFS);
         if (!*lvbp)
                 error = -ENOMEM;
 
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 161ab6f2058e..548264b1836d 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -769,8 +769,8 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
         sdp->sd_log_commited_revoke += tr->tr_num_revoke - tr->tr_num_revoke_rm;
         gfs2_assert_withdraw(sdp, ((int)sdp->sd_log_commited_revoke) >= 0);
         reserved = calc_reserved(sdp);
+        gfs2_assert_withdraw(sdp, sdp->sd_log_blks_reserved + tr->tr_reserved >= reserved);
         unused = sdp->sd_log_blks_reserved - reserved + tr->tr_reserved;
-        gfs2_assert_withdraw(sdp, unused >= 0);
         atomic_add(unused, &sdp->sd_log_blks_free);
         gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <=
                              sdp->sd_jdesc->jd_blocks);
@@ -779,6 +779,21 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
         gfs2_log_unlock(sdp);
 }
 
+static void buf_lo_incore_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
+{
+        struct list_head *head = &tr->tr_list_buf;
+        struct gfs2_bufdata *bd;
+
+        gfs2_log_lock(sdp);
+        while (!list_empty(head)) {
+                bd = list_entry(head->next, struct gfs2_bufdata, bd_list_tr);
+                list_del_init(&bd->bd_list_tr);
+                tr->tr_num_buf--;
+        }
+        gfs2_log_unlock(sdp);
+        gfs2_assert_warn(sdp, !tr->tr_num_buf);
+}
+
 /**
  * gfs2_log_commit - Commit a transaction to the log
  * @sdp: the filesystem
@@ -790,7 +805,7 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
 void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
 {
         log_refund(sdp, tr);
-        lops_incore_commit(sdp, tr);
+        buf_lo_incore_commit(sdp, tr);
 
         sdp->sd_vfs->s_dirt = 1;
         up_read(&sdp->sd_log_flush_lock);
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index fae59d69d01a..4390f6f4047d 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -152,21 +152,6 @@ out:
         unlock_buffer(bd->bd_bh);
 }
 
-static void buf_lo_incore_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
-{
-        struct list_head *head = &tr->tr_list_buf;
-        struct gfs2_bufdata *bd;
-
-        gfs2_log_lock(sdp);
-        while (!list_empty(head)) {
-                bd = list_entry(head->next, struct gfs2_bufdata, bd_list_tr);
-                list_del_init(&bd->bd_list_tr);
-                tr->tr_num_buf--;
-        }
-        gfs2_log_unlock(sdp);
-        gfs2_assert_warn(sdp, !tr->tr_num_buf);
-}
-
 static void buf_lo_before_commit(struct gfs2_sbd *sdp)
 {
         struct buffer_head *bh;
@@ -419,8 +404,10 @@ static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
                         blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset));
 
                         error = gfs2_revoke_add(sdp, blkno, start);
-                        if (error < 0)
+                        if (error < 0) {
+                                brelse(bh);
                                 return error;
+                        }
                         else if (error)
                                 sdp->sd_found_revokes++;
 
@@ -737,7 +724,6 @@ static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
 
 const struct gfs2_log_operations gfs2_buf_lops = {
         .lo_add = buf_lo_add,
-        .lo_incore_commit = buf_lo_incore_commit,
         .lo_before_commit = buf_lo_before_commit,
         .lo_after_commit = buf_lo_after_commit,
         .lo_before_scan = buf_lo_before_scan,
@@ -763,7 +749,6 @@ const struct gfs2_log_operations gfs2_rg_lops = {
 
 const struct gfs2_log_operations gfs2_databuf_lops = {
         .lo_add = databuf_lo_add,
-        .lo_incore_commit = buf_lo_incore_commit,
         .lo_before_commit = databuf_lo_before_commit,
         .lo_after_commit = databuf_lo_after_commit,
         .lo_scan_elements = databuf_lo_scan_elements,
diff --git a/fs/gfs2/lops.h b/fs/gfs2/lops.h
index 41a00df75587..3c0b2737658a 100644
--- a/fs/gfs2/lops.h
+++ b/fs/gfs2/lops.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -57,15 +57,6 @@ static inline void lops_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
                 le->le_ops->lo_add(sdp, le);
 }
 
-static inline void lops_incore_commit(struct gfs2_sbd *sdp,
-                                      struct gfs2_trans *tr)
-{
-        int x;
-        for (x = 0; gfs2_log_ops[x]; x++)
-                if (gfs2_log_ops[x]->lo_incore_commit)
-                        gfs2_log_ops[x]->lo_incore_commit(sdp, tr);
-}
-
 static inline void lops_before_commit(struct gfs2_sbd *sdp)
 {
         int x;
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index 9c7765c12d62..053e2ebbbd50 100644
--- a/fs/gfs2/main.c
+++ b/fs/gfs2/main.c
@@ -89,6 +89,12 @@ static int __init init_gfs2_fs(void)
         if (!gfs2_bufdata_cachep)
                 goto fail;
 
+        gfs2_rgrpd_cachep = kmem_cache_create("gfs2_rgrpd",
+                                              sizeof(struct gfs2_rgrpd),
+                                              0, 0, NULL);
+        if (!gfs2_rgrpd_cachep)
+                goto fail;
+
         error = register_filesystem(&gfs2_fs_type);
         if (error)
                 goto fail;
@@ -108,6 +114,9 @@ fail_unregister:
 fail:
         gfs2_glock_exit();
 
+        if (gfs2_rgrpd_cachep)
+                kmem_cache_destroy(gfs2_rgrpd_cachep);
+
         if (gfs2_bufdata_cachep)
                 kmem_cache_destroy(gfs2_bufdata_cachep);
 
@@ -133,6 +142,7 @@ static void __exit exit_gfs2_fs(void)
         unregister_filesystem(&gfs2_fs_type);
         unregister_filesystem(&gfs2meta_fs_type);
 
+        kmem_cache_destroy(gfs2_rgrpd_cachep);
         kmem_cache_destroy(gfs2_bufdata_cachep);
         kmem_cache_destroy(gfs2_inode_cachep);
         kmem_cache_destroy(gfs2_glock_cachep);
diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index ac772b6d9dbb..90a04a6e3789 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -21,7 +21,6 @@
 #include <linux/gfs2_ondisk.h>
 #include <linux/lm_interface.h>
 #include <linux/backing-dev.h>
-#include <linux/pagevec.h>
 
 #include "gfs2.h"
 #include "incore.h"
@@ -104,11 +103,9 @@ static int gfs2_writepage_common(struct page *page,
         loff_t i_size = i_size_read(inode);
         pgoff_t end_index = i_size >> PAGE_CACHE_SHIFT;
         unsigned offset;
-        int ret = -EIO;
 
         if (gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(ip->i_gl)))
                 goto out;
-        ret = 0;
         if (current->journal_info)
                 goto redirty;
         /* Is the page fully outside i_size? (truncate in progress) */
@@ -280,7 +277,7 @@ static int gfs2_write_jdata_pagevec(struct address_space *mapping,
         int i;
         int ret;
 
-        ret = gfs2_trans_begin(sdp, nrblocks, 0);
+        ret = gfs2_trans_begin(sdp, nrblocks, nrblocks);
         if (ret < 0)
                 return ret;
 
@@ -510,23 +507,26 @@ static int __gfs2_readpage(void *file, struct page *page)
 static int gfs2_readpage(struct file *file, struct page *page)
 {
         struct gfs2_inode *ip = GFS2_I(page->mapping->host);
-        struct gfs2_holder gh;
+        struct gfs2_holder *gh;
         int error;
 
-        gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME|LM_FLAG_TRY_1CB, &gh);
-        error = gfs2_glock_nq_atime(&gh);
-        if (unlikely(error)) {
+        gh = gfs2_glock_is_locked_by_me(ip->i_gl);
+        if (!gh) {
+                gh = kmalloc(sizeof(struct gfs2_holder), GFP_NOFS);
+                if (!gh)
+                        return -ENOBUFS;
+                gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME, gh);
                 unlock_page(page);
-                goto out;
+                error = gfs2_glock_nq_atime(gh);
+                if (likely(error != 0))
+                        goto out;
+                return AOP_TRUNCATED_PAGE;
         }
         error = __gfs2_readpage(file, page);
-        gfs2_glock_dq(&gh);
+        gfs2_glock_dq(gh);
 out:
-        gfs2_holder_uninit(&gh);
-        if (error == GLR_TRYFAILED) {
-                yield();
-                return AOP_TRUNCATED_PAGE;
-        }
+        gfs2_holder_uninit(gh);
+        kfree(gh);
         return error;
 }
 
@@ -648,15 +648,15 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
 
         if (alloc_required) {
                 al = gfs2_alloc_get(ip);
+                if (!al) {
+                        error = -ENOMEM;
+                        goto out_unlock;
+                }
 
-                error = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+                error = gfs2_quota_lock_check(ip);
                 if (error)
                         goto out_alloc_put;
 
-                error = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
-                if (error)
-                        goto out_qunlock;
-
                 al->al_requested = data_blocks + ind_blocks;
                 error = gfs2_inplace_reserve(ip);
                 if (error)
@@ -828,7 +828,7 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
         unsigned int to = from + len;
         int ret;
 
-        BUG_ON(gfs2_glock_is_locked_by_me(ip->i_gl) == 0);
+        BUG_ON(gfs2_glock_is_locked_by_me(ip->i_gl) == NULL);
 
         ret = gfs2_meta_inode_buffer(ip, &dibh);
         if (unlikely(ret)) {
diff --git a/fs/gfs2/ops_dentry.c b/fs/gfs2/ops_dentry.c
index 793e334d098e..4a5e676b4420 100644
--- a/fs/gfs2/ops_dentry.c
+++ b/fs/gfs2/ops_dentry.c
@@ -43,7 +43,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
         struct gfs2_holder d_gh;
         struct gfs2_inode *ip = NULL;
         int error;
-        int had_lock=0;
+        int had_lock = 0;
 
         if (inode) {
                 if (is_bad_inode(inode))
@@ -54,7 +54,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
         if (sdp->sd_args.ar_localcaching)
                 goto valid;
 
-        had_lock = gfs2_glock_is_locked_by_me(dip->i_gl);
+        had_lock = (gfs2_glock_is_locked_by_me(dip->i_gl) != NULL);
         if (!had_lock) {
                 error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
                 if (error)
diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index 334c7f85351b..990d9f4bc463 100644
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -204,8 +204,6 @@ static struct dentry *gfs2_get_dentry(struct super_block *sb,
         inode = gfs2_inode_lookup(sb, DT_UNKNOWN,
                                         inum->no_addr,
                                         0, 0);
-        if (!inode)
-                goto fail;
         if (IS_ERR(inode)) {
                 error = PTR_ERR(inode);
                 goto fail;
diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index f4842f2548cd..e1b7d525a066 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -30,7 +30,6 @@
 #include "glock.h"
 #include "glops.h"
 #include "inode.h"
-#include "lm.h"
 #include "log.h"
 #include "meta_io.h"
 #include "quota.h"
@@ -39,6 +38,7 @@
 #include "util.h"
 #include "eaops.h"
 #include "ops_address.h"
+#include "ops_inode.h"
 
 /**
  * gfs2_llseek - seek to a location in a file
@@ -369,12 +369,9 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct page *page)
         if (al == NULL)
                 goto out_unlock;
 
-        ret = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+        ret = gfs2_quota_lock_check(ip);
         if (ret)
                 goto out_alloc_put;
-        ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
-        if (ret)
-                goto out_quota_unlock;
         al->al_requested = data_blocks + ind_blocks;
         ret = gfs2_inplace_reserve(ip);
         if (ret)
@@ -596,6 +593,36 @@ static int gfs2_setlease(struct file *file, long arg, struct file_lock **fl)
         return generic_setlease(file, arg, fl);
 }
 
+static int gfs2_lm_plock_get(struct gfs2_sbd *sdp, struct lm_lockname *name,
+                      struct file *file, struct file_lock *fl)
+{
+        int error = -EIO;
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                error = sdp->sd_lockstruct.ls_ops->lm_plock_get(
+                                sdp->sd_lockstruct.ls_lockspace, name, file, fl);
+        return error;
+}
+
+static int gfs2_lm_plock(struct gfs2_sbd *sdp, struct lm_lockname *name,
+                  struct file *file, int cmd, struct file_lock *fl)
+{
+        int error = -EIO;
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                error = sdp->sd_lockstruct.ls_ops->lm_plock(
+                                sdp->sd_lockstruct.ls_lockspace, name, file, cmd, fl);
+        return error;
+}
+
+static int gfs2_lm_punlock(struct gfs2_sbd *sdp, struct lm_lockname *name,
+                    struct file *file, struct file_lock *fl)
+{
+        int error = -EIO;
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                error = sdp->sd_lockstruct.ls_ops->lm_punlock(
+                                sdp->sd_lockstruct.ls_lockspace, name, file, fl);
+        return error;
+}
+
 /**
  * gfs2_lock - acquire/release a posix lock on a file
  * @file: the file pointer
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 4bee6aa845e4..ef9c6c4f80f6 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -26,7 +26,6 @@
 #include "glock.h"
 #include "glops.h"
 #include "inode.h"
-#include "lm.h"
 #include "mount.h"
 #include "ops_fstype.h"
 #include "ops_dentry.h"
@@ -363,6 +362,13 @@ static int map_journal_extents(struct gfs2_sbd *sdp)
         return rc;
 }
 
+static void gfs2_lm_others_may_mount(struct gfs2_sbd *sdp)
+{
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                sdp->sd_lockstruct.ls_ops->lm_others_may_mount(
+                                        sdp->sd_lockstruct.ls_lockspace);
+}
+
 static int init_journal(struct gfs2_sbd *sdp, int undo)
 {
         struct gfs2_holder ji_gh;
@@ -542,7 +548,7 @@ static int init_inodes(struct gfs2_sbd *sdp, int undo)
         }
         ip = GFS2_I(sdp->sd_rindex);
         set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
-        sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1;
+        sdp->sd_rindex_uptodate = 0;
 
         /* Read in the quota inode */
         sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota");
@@ -705,6 +711,69 @@ fail:
 }
 
 /**
+ * gfs2_lm_mount - mount a locking protocol
+ * @sdp: the filesystem
+ * @args: mount arguements
+ * @silent: if 1, don't complain if the FS isn't a GFS2 fs
+ *
+ * Returns: errno
+ */
+
+static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent)
+{
+        char *proto = sdp->sd_proto_name;
+        char *table = sdp->sd_table_name;
+        int flags = LM_MFLAG_CONV_NODROP;
+        int error;
+
+        if (sdp->sd_args.ar_spectator)
+                flags |= LM_MFLAG_SPECTATOR;
+
+        fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table);
+
+        error = gfs2_mount_lockproto(proto, table, sdp->sd_args.ar_hostdata,
+                                     gfs2_glock_cb, sdp,
+                                     GFS2_MIN_LVB_SIZE, flags,
+                                     &sdp->sd_lockstruct, &sdp->sd_kobj);
+        if (error) {
+                fs_info(sdp, "can't mount proto=%s, table=%s, hostdata=%s\n",
+                        proto, table, sdp->sd_args.ar_hostdata);
+                goto out;
+        }
+
+        if (gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_lockspace) ||
+            gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_ops) ||
+            gfs2_assert_warn(sdp, sdp->sd_lockstruct.ls_lvb_size >=
+                                  GFS2_MIN_LVB_SIZE)) {
+                gfs2_unmount_lockproto(&sdp->sd_lockstruct);
+                goto out;
+        }
+
+        if (sdp->sd_args.ar_spectator)
+                snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.s", table);
+        else
+                snprintf(sdp->sd_fsname, GFS2_FSNAME_LEN, "%s.%u", table,
+                         sdp->sd_lockstruct.ls_jid);
+
+        fs_info(sdp, "Joined cluster. Now mounting FS...\n");
+
+        if ((sdp->sd_lockstruct.ls_flags & LM_LSFLAG_LOCAL) &&
+            !sdp->sd_args.ar_ignore_local_fs) {
+                sdp->sd_args.ar_localflocks = 1;
+                sdp->sd_args.ar_localcaching = 1;
+        }
+
+out:
+        return error;
+}
+
+void gfs2_lm_unmount(struct gfs2_sbd *sdp)
+{
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                gfs2_unmount_lockproto(&sdp->sd_lockstruct);
+}
+
+/**
  * fill_super - Read in superblock
  * @sb: The VFS superblock
  * @data: Mount options
@@ -874,7 +943,6 @@ static struct super_block* get_gfs2_sb(const char *dev_name)
 {
         struct kstat stat;
         struct nameidata nd;
-        struct file_system_type *fstype;
         struct super_block *sb = NULL, *s;
         int error;
 
@@ -886,8 +954,7 @@ static struct super_block* get_gfs2_sb(const char *dev_name)
         }
         error = vfs_getattr(nd.path.mnt, nd.path.dentry, &stat);
 
-        fstype = get_fs_type("gfs2");
-        list_for_each_entry(s, &fstype->fs_supers, s_instances) {
+        list_for_each_entry(s, &gfs2_fs_type.fs_supers, s_instances) {
                 if ((S_ISBLK(stat.mode) && s->s_dev == stat.rdev) ||
                     (S_ISDIR(stat.mode) &&
                      s == nd.path.dentry->d_inode->i_sb)) {
@@ -931,7 +998,6 @@ static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags,
                 error = PTR_ERR(new);
                 goto error;
         }
-        module_put(fs_type->owner);
         new->s_flags = flags;
         strlcpy(new->s_id, sb->s_id, sizeof(new->s_id));
         sb_set_blocksize(new, sb->s_blocksize);
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index e87412902bed..2686ad4c0029 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -200,15 +200,15 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
 
         if (alloc_required) {
                 struct gfs2_alloc *al = gfs2_alloc_get(dip);
+                if (!al) {
+                        error = -ENOMEM;
+                        goto out_gunlock;
+                }
 
-                error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+                error = gfs2_quota_lock_check(dip);
                 if (error)
                         goto out_alloc;
 
-                error = gfs2_quota_check(dip, dip->i_inode.i_uid, dip->i_inode.i_gid);
-                if (error)
-                        goto out_gunlock_q;
-
                 al->al_requested = sdp->sd_max_dirres;
 
                 error = gfs2_inplace_reserve(dip);
@@ -716,15 +716,15 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
 
         if (alloc_required) {
                 struct gfs2_alloc *al = gfs2_alloc_get(ndip);
+                if (!al) {
+                        error = -ENOMEM;
+                        goto out_gunlock;
+                }
 
-                error = gfs2_quota_lock(ndip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+                error = gfs2_quota_lock_check(ndip);
                 if (error)
                         goto out_alloc;
 
-                error = gfs2_quota_check(ndip, ndip->i_inode.i_uid, ndip->i_inode.i_gid);
-                if (error)
-                        goto out_gunlock_q;
-
                 al->al_requested = sdp->sd_max_dirres;
 
                 error = gfs2_inplace_reserve(ndip);
@@ -898,7 +898,7 @@ static int gfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
         int error;
         int unlock = 0;
 
-        if (gfs2_glock_is_locked_by_me(ip->i_gl) == 0) {
+        if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) {
                 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
                 if (error)
                         return error;
@@ -953,7 +953,8 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
         if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
                 ogid = ngid = NO_QUOTA_CHANGE;
 
-        gfs2_alloc_get(ip);
+        if (!gfs2_alloc_get(ip))
+                return -ENOMEM;
 
         error = gfs2_quota_lock(ip, nuid, ngid);
         if (error)
@@ -981,8 +982,9 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
         brelse(dibh);
 
         if (ouid != NO_QUOTA_CHANGE || ogid != NO_QUOTA_CHANGE) {
-                gfs2_quota_change(ip, -ip->i_di.di_blocks, ouid, ogid);
-                gfs2_quota_change(ip, ip->i_di.di_blocks, nuid, ngid);
+                u64 blocks = gfs2_get_inode_blocks(&ip->i_inode);
+                gfs2_quota_change(ip, -blocks, ouid, ogid);
+                gfs2_quota_change(ip, blocks, nuid, ngid);
         }
 
 out_end_trans:
@@ -1064,7 +1066,7 @@ static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
         int error;
         int unlock = 0;
 
-        if (gfs2_glock_is_locked_by_me(ip->i_gl) == 0) {
+        if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) {
                 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
                 if (error)
                         return error;
@@ -1148,16 +1150,6 @@ const struct inode_operations gfs2_file_iops = {
         .removexattr = gfs2_removexattr,
 };
 
-const struct inode_operations gfs2_dev_iops = {
-        .permission = gfs2_permission,
-        .setattr = gfs2_setattr,
-        .getattr = gfs2_getattr,
-        .setxattr = gfs2_setxattr,
-        .getxattr = gfs2_getxattr,
-        .listxattr = gfs2_listxattr,
-        .removexattr = gfs2_removexattr,
-};
-
 const struct inode_operations gfs2_dir_iops = {
         .create = gfs2_create,
         .lookup = gfs2_lookup,
diff --git a/fs/gfs2/ops_inode.h b/fs/gfs2/ops_inode.h
index fd8cee231e1d..14b4b797622a 100644
--- a/fs/gfs2/ops_inode.h
+++ b/fs/gfs2/ops_inode.h
@@ -15,7 +15,6 @@
 extern const struct inode_operations gfs2_file_iops;
 extern const struct inode_operations gfs2_dir_iops;
 extern const struct inode_operations gfs2_symlink_iops;
-extern const struct inode_operations gfs2_dev_iops;
 extern const struct file_operations gfs2_file_fops;
 extern const struct file_operations gfs2_dir_fops;
 extern const struct file_operations gfs2_file_fops_nolock;
diff --git a/fs/gfs2/ops_super.c b/fs/gfs2/ops_super.c
index 5e524217944a..2278c68b7e35 100644
--- a/fs/gfs2/ops_super.c
+++ b/fs/gfs2/ops_super.c
@@ -25,7 +25,6 @@
 #include "incore.h"
 #include "glock.h"
 #include "inode.h"
-#include "lm.h"
 #include "log.h"
 #include "mount.h"
 #include "ops_super.h"
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index a08dabd6ce90..56aaf915c59a 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -94,7 +94,7 @@ static int qd_alloc(struct gfs2_sbd *sdp, int user, u32 id,
         struct gfs2_quota_data *qd;
         int error;
 
-        qd = kzalloc(sizeof(struct gfs2_quota_data), GFP_KERNEL);
+        qd = kzalloc(sizeof(struct gfs2_quota_data), GFP_NOFS);
         if (!qd)
                 return -ENOMEM;
 
@@ -616,16 +616,9 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
         s64 value;
         int err = -EIO;
 
-        if (gfs2_is_stuffed(ip)) {
-                struct gfs2_alloc *al = NULL;
-                al = gfs2_alloc_get(ip);
-                /* just request 1 blk */
-                al->al_requested = 1;
-                gfs2_inplace_reserve(ip);
+        if (gfs2_is_stuffed(ip))
                 gfs2_unstuff_dinode(ip, NULL);
-                gfs2_inplace_release(ip);
-                gfs2_alloc_put(ip);
-        }
+        
         page = grab_cache_page(mapping, index);
         if (!page)
                 return -ENOMEM;
@@ -690,14 +683,14 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
         unsigned int qx, x;
         struct gfs2_quota_data *qd;
         loff_t offset;
-        unsigned int nalloc = 0;
+        unsigned int nalloc = 0, blocks;
         struct gfs2_alloc *al = NULL;
         int error;
 
         gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota),
                               &data_blocks, &ind_blocks);
 
-        ghs = kcalloc(num_qd, sizeof(struct gfs2_holder), GFP_KERNEL);
+        ghs = kcalloc(num_qd, sizeof(struct gfs2_holder), GFP_NOFS);
         if (!ghs)
                 return -ENOMEM;
 
@@ -727,30 +720,33 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
                         nalloc++;
         }
 
-        if (nalloc) {
-                al = gfs2_alloc_get(ip);
+        al = gfs2_alloc_get(ip);
+        if (!al) {
+                error = -ENOMEM;
+                goto out_gunlock;
+        }
+        /* 
+         * 1 blk for unstuffing inode if stuffed. We add this extra
+         * block to the reservation unconditionally. If the inode
+         * doesn't need unstuffing, the block will be released to the 
+         * rgrp since it won't be allocated during the transaction
+         */
+        al->al_requested = 1;
+        /* +1 in the end for block requested above for unstuffing */
+        blocks = num_qd * data_blocks + RES_DINODE + num_qd + 1;
 
-                al->al_requested = nalloc * (data_blocks + ind_blocks);
+        if (nalloc)
+                al->al_requested += nalloc * (data_blocks + ind_blocks);                
+        error = gfs2_inplace_reserve(ip);
+        if (error)
+                goto out_alloc;
 
-                error = gfs2_inplace_reserve(ip);
-                if (error)
-                        goto out_alloc;
-
-                error = gfs2_trans_begin(sdp,
-                                         al->al_rgd->rd_length +
-                                         num_qd * data_blocks +
-                                         nalloc * ind_blocks +
-                                         RES_DINODE + num_qd +
-                                         RES_STATFS, 0);
-                if (error)
-                        goto out_ipres;
-        } else {
-                error = gfs2_trans_begin(sdp,
-                                         num_qd * data_blocks +
-                                         RES_DINODE + num_qd, 0);
-                if (error)
-                        goto out_gunlock;
-        }
+        if (nalloc)
+                blocks += al->al_rgd->rd_length + nalloc * ind_blocks + RES_STATFS;
+
+        error = gfs2_trans_begin(sdp, blocks, 0);
+        if (error)
+                goto out_ipres;
 
         for (x = 0; x < num_qd; x++) {
                 qd = qda[x];
@@ -769,11 +765,9 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
 out_end_trans:
         gfs2_trans_end(sdp);
 out_ipres:
-        if (nalloc)
-                gfs2_inplace_release(ip);
+        gfs2_inplace_release(ip);
 out_alloc:
-        if (nalloc)
-                gfs2_alloc_put(ip);
+        gfs2_alloc_put(ip);
 out_gunlock:
         gfs2_glock_dq_uninit(&i_gh);
 out:
@@ -1124,12 +1118,12 @@ int gfs2_quota_init(struct gfs2_sbd *sdp)
         error = -ENOMEM;
 
         sdp->sd_quota_bitmap = kcalloc(sdp->sd_quota_chunks,
-                                       sizeof(unsigned char *), GFP_KERNEL);
+                                       sizeof(unsigned char *), GFP_NOFS);
         if (!sdp->sd_quota_bitmap)
                 return error;
 
         for (x = 0; x < sdp->sd_quota_chunks; x++) {
-                sdp->sd_quota_bitmap[x] = kzalloc(PAGE_SIZE, GFP_KERNEL);
+                sdp->sd_quota_bitmap[x] = kzalloc(PAGE_SIZE, GFP_NOFS);
                 if (!sdp->sd_quota_bitmap[x])
                         goto fail;
         }
diff --git a/fs/gfs2/quota.h b/fs/gfs2/quota.h
index a8be1417051f..3b7f4b0e5dfe 100644
--- a/fs/gfs2/quota.h
+++ b/fs/gfs2/quota.h
@@ -32,4 +32,21 @@ int gfs2_quota_init(struct gfs2_sbd *sdp);
 void gfs2_quota_scan(struct gfs2_sbd *sdp);
 void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
 
+static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
+{
+        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+        int ret;
+        if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
+                return 0;
+        ret = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+        if (ret)
+                return ret;
+        if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
+                return 0;
+        ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
+        if (ret)
+                gfs2_quota_unlock(ip);
+        return ret;
+}
+
 #endif /* __QUOTA_DOT_H__ */
diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c
index 6fb07d67ca8a..2888e4b4b1c5 100644
--- a/fs/gfs2/recovery.c
+++ b/fs/gfs2/recovery.c
@@ -20,7 +20,6 @@
 #include "bmap.h"
 #include "glock.h"
 #include "glops.h"
-#include "lm.h"
 #include "lops.h"
 #include "meta_io.h"
 #include "recovery.h"
@@ -69,7 +68,7 @@ int gfs2_revoke_add(struct gfs2_sbd *sdp, u64 blkno, unsigned int where)
                 return 0;
         }
 
-        rr = kmalloc(sizeof(struct gfs2_revoke_replay), GFP_KERNEL);
+        rr = kmalloc(sizeof(struct gfs2_revoke_replay), GFP_NOFS);
         if (!rr)
                 return -ENOMEM;
 
@@ -150,7 +149,7 @@ static int get_log_header(struct gfs2_jdesc *jd, unsigned int blk,
                           struct gfs2_log_header_host *head)
 {
         struct buffer_head *bh;
-        struct gfs2_log_header_host lh;
+        struct gfs2_log_header_host uninitialized_var(lh);
         const u32 nothing = 0;
         u32 hash;
         int error;
@@ -425,6 +424,16 @@ static int clean_journal(struct gfs2_jdesc *jd, struct gfs2_log_header_host *hea
         return error;
 }
 
+
+static void gfs2_lm_recovery_done(struct gfs2_sbd *sdp, unsigned int jid,
+                                  unsigned int message)
+{
+        if (likely(!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)))
+                sdp->sd_lockstruct.ls_ops->lm_recovery_done(
+                        sdp->sd_lockstruct.ls_lockspace, jid, message);
+}
+
+
 /**
  * gfs2_recover_journal - recovery a given journal
  * @jd: the struct gfs2_jdesc describing the journal
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 3552110b2e5f..7e8f0b1d6c6e 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -14,6 +14,7 @@
 #include <linux/fs.h>
 #include <linux/gfs2_ondisk.h>
 #include <linux/lm_interface.h>
+#include <linux/prefetch.h>
 
 #include "gfs2.h"
 #include "incore.h"
@@ -33,6 +34,16 @@
 #define BFITNOENT ((u32)~0)
 #define NO_BLOCK ((u64)~0)
 
+#if BITS_PER_LONG == 32
+#define LBITMASK   (0x55555555UL)
+#define LBITSKIP55 (0x55555555UL)
+#define LBITSKIP00 (0x00000000UL)
+#else
+#define LBITMASK   (0x5555555555555555UL)
+#define LBITSKIP55 (0x5555555555555555UL)
+#define LBITSKIP00 (0x0000000000000000UL)
+#endif
+
 /*
  * These routines are used by the resource group routines (rgrp.c)
  * to keep track of block allocation.  Each block is represented by two
@@ -53,7 +64,8 @@ static const char valid_change[16] = {
 };
 
 static u32 rgblk_search(struct gfs2_rgrpd *rgd, u32 goal,
-                        unsigned char old_state, unsigned char new_state);
+                        unsigned char old_state, unsigned char new_state,
+                        unsigned int *n);
 
 /**
  * gfs2_setbit - Set a bit in the bitmaps
@@ -64,26 +76,32 @@ static u32 rgblk_search(struct gfs2_rgrpd *rgd, u32 goal,
  *
  */
 
-static void gfs2_setbit(struct gfs2_rgrpd *rgd, unsigned char *buffer,
-                        unsigned int buflen, u32 block,
-                        unsigned char new_state)
+static inline void gfs2_setbit(struct gfs2_rgrpd *rgd, unsigned char *buf1,
+                               unsigned char *buf2, unsigned int offset,
+                               unsigned int buflen, u32 block,
+                               unsigned char new_state)
 {
-        unsigned char *byte, *end, cur_state;
-        unsigned int bit;
+        unsigned char *byte1, *byte2, *end, cur_state;
+        const unsigned int bit = (block % GFS2_NBBY) * GFS2_BIT_SIZE;
 
-        byte = buffer + (block / GFS2_NBBY);
-        bit = (block % GFS2_NBBY) * GFS2_BIT_SIZE;
-        end = buffer + buflen;
+        byte1 = buf1 + offset + (block / GFS2_NBBY);
+        end = buf1 + offset + buflen;
 
-        gfs2_assert(rgd->rd_sbd, byte < end);
+        BUG_ON(byte1 >= end);
 
-        cur_state = (*byte >> bit) & GFS2_BIT_MASK;
+        cur_state = (*byte1 >> bit) & GFS2_BIT_MASK;
 
-        if (valid_change[new_state * 4 + cur_state]) {
-                *byte ^= cur_state << bit;
-                *byte |= new_state << bit;
-        } else
+        if (unlikely(!valid_change[new_state * 4 + cur_state])) {
                 gfs2_consist_rgrpd(rgd);
+                return;
+        }
+        *byte1 ^= (cur_state ^ new_state) << bit;
+
+        if (buf2) {
+                byte2 = buf2 + offset + (block / GFS2_NBBY);
+                cur_state = (*byte2 >> bit) & GFS2_BIT_MASK;
+                *byte2 ^= (cur_state ^ new_state) << bit;
+        }
 }
 
 /**
@@ -94,10 +112,12 @@ static void gfs2_setbit(struct gfs2_rgrpd *rgd, unsigned char *buffer,
  *
  */
 
-static unsigned char gfs2_testbit(struct gfs2_rgrpd *rgd, unsigned char *buffer,
-                                  unsigned int buflen, u32 block)
+static inline unsigned char gfs2_testbit(struct gfs2_rgrpd *rgd,
+                                         const unsigned char *buffer,
+                                         unsigned int buflen, u32 block)
 {
-        unsigned char *byte, *end, cur_state;
+        const unsigned char *byte, *end;
+        unsigned char cur_state;
         unsigned int bit;
 
         byte = buffer + (block / GFS2_NBBY);
@@ -126,47 +146,66 @@ static unsigned char gfs2_testbit(struct gfs2_rgrpd *rgd, unsigned char *buffer,
  * Return: the block number (bitmap buffer scope) that was found
  */
 
-static u32 gfs2_bitfit(unsigned char *buffer, unsigned int buflen, u32 goal,
-                       unsigned char old_state)
+static u32 gfs2_bitfit(const u8 *buffer, unsigned int buflen, u32 goal,
+                       u8 old_state)
 {
-        unsigned char *byte;
-        u32 blk = goal;
-        unsigned int bit, bitlong;
-        unsigned long *plong, plong55;
-
-        byte = buffer + (goal / GFS2_NBBY);
-        plong = (unsigned long *)(buffer + (goal / GFS2_NBBY));
-        bit = (goal % GFS2_NBBY) * GFS2_BIT_SIZE;
-        bitlong = bit;
-#if BITS_PER_LONG == 32
-        plong55 = 0x55555555;
-#else
-        plong55 = 0x5555555555555555;
-#endif
-        while (byte < buffer + buflen) {
-
-                if (bitlong == 0 && old_state == 0 && *plong == plong55) {
-                        plong++;
-                        byte += sizeof(unsigned long);
-                        blk += sizeof(unsigned long) * GFS2_NBBY;
-                        continue;
+        const u8 *byte, *start, *end;
+        int bit, startbit;
+        u32 g1, g2, misaligned;
+        unsigned long *plong;
+        unsigned long lskipval;
+
+        lskipval = (old_state & GFS2_BLKST_USED) ? LBITSKIP00 : LBITSKIP55;
+        g1 = (goal / GFS2_NBBY);
+        start = buffer + g1;
+        byte = start;
+        end = buffer + buflen;
+        g2 = ALIGN(g1, sizeof(unsigned long));
+        plong = (unsigned long *)(buffer + g2);
+        startbit = bit = (goal % GFS2_NBBY) * GFS2_BIT_SIZE;
+        misaligned = g2 - g1;
+        if (!misaligned)
+                goto ulong_aligned;
+/* parse the bitmap a byte at a time */
+misaligned:
+        while (byte < end) {
+                if (((*byte >> bit) & GFS2_BIT_MASK) == old_state) {
+                        return goal +
+                                (((byte - start) * GFS2_NBBY) +
+                                 ((bit - startbit) >> 1));
                 }
-                if (((*byte >> bit) & GFS2_BIT_MASK) == old_state)
-                        return blk;
                 bit += GFS2_BIT_SIZE;
-                if (bit >= 8) {
+                if (bit >= GFS2_NBBY * GFS2_BIT_SIZE) {
                         bit = 0;
                         byte++;
+                        misaligned--;
+                        if (!misaligned) {
+                                plong = (unsigned long *)byte;
+                                goto ulong_aligned;
+                        }
                 }
-                bitlong += GFS2_BIT_SIZE;
-                if (bitlong >= sizeof(unsigned long) * 8) {
-                        bitlong = 0;
-                        plong++;
-                }
-
-                blk++;
         }
+        return BFITNOENT;
 
+/* parse the bitmap a unsigned long at a time */
+ulong_aligned:
+        /* Stop at "end - 1" or else prefetch can go past the end and segfault.
+           We could "if" it but we'd lose some of the performance gained.
+           This way will only slow down searching the very last 4/8 bytes
+           depending on architecture.  I've experimented with several ways
+           of writing this section such as using an else before the goto
+           but this one seems to be the fastest. */
+        while ((unsigned char *)plong < end - 1) {
+                prefetch(plong + 1);
+                if (((*plong) & LBITMASK) != lskipval)
+                        break;
+                plong++;
+        }
+        if ((unsigned char *)plong < end) {
+                byte = (const u8 *)plong;
+                misaligned += sizeof(unsigned long) - 1;
+                goto misaligned;
+        }
         return BFITNOENT;
 }
 
@@ -179,14 +218,14 @@ static u32 gfs2_bitfit(unsigned char *buffer, unsigned int buflen, u32 goal,
  * Returns: The number of bits
  */
 
-static u32 gfs2_bitcount(struct gfs2_rgrpd *rgd, unsigned char *buffer,
-                              unsigned int buflen, unsigned char state)
+static u32 gfs2_bitcount(struct gfs2_rgrpd *rgd, const u8 *buffer,
+                         unsigned int buflen, u8 state)
 {
-        unsigned char *byte = buffer;
-        unsigned char *end = buffer + buflen;
-        unsigned char state1 = state << 2;
-        unsigned char state2 = state << 4;
-        unsigned char state3 = state << 6;
+        const u8 *byte = buffer;
+        const u8 *end = buffer + buflen;
+        const u8 state1 = state << 2;
+        const u8 state2 = state << 4;
+        const u8 state3 = state << 6;
         u32 count = 0;
 
         for (; byte < end; byte++) {
@@ -353,7 +392,7 @@ static void clear_rgrpdi(struct gfs2_sbd *sdp)
                 }
 
                 kfree(rgd->rd_bits);
-                kfree(rgd);
+                kmem_cache_free(gfs2_rgrpd_cachep, rgd);
         }
 }
 
@@ -516,7 +555,7 @@ static int read_rindex_entry(struct gfs2_inode *ip,
                 return error;
         }
 
-        rgd = kzalloc(sizeof(struct gfs2_rgrpd), GFP_NOFS);
+        rgd = kmem_cache_zalloc(gfs2_rgrpd_cachep, GFP_NOFS);
         error = -ENOMEM;
         if (!rgd)
                 return error;
@@ -539,7 +578,7 @@ static int read_rindex_entry(struct gfs2_inode *ip,
                 return error;
 
         rgd->rd_gl->gl_object = rgd;
-        rgd->rd_rg_vn = rgd->rd_gl->gl_vn - 1;
+        rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
         rgd->rd_flags |= GFS2_RDF_CHECK;
         return error;
 }
@@ -575,7 +614,7 @@ static int gfs2_ri_update(struct gfs2_inode *ip)
                 }
         }
 
-        sdp->sd_rindex_vn = ip->i_gl->gl_vn;
+        sdp->sd_rindex_uptodate = 1;
         return 0;
 }
 
@@ -609,7 +648,7 @@ static int gfs2_ri_update_special(struct gfs2_inode *ip)
                 }
         }
 
-        sdp->sd_rindex_vn = ip->i_gl->gl_vn;
+        sdp->sd_rindex_uptodate = 1;
         return 0;
 }
 
@@ -642,9 +681,9 @@ int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh)
                 return error;
 
         /* Read new copy from disk if we don't have the latest */
-        if (sdp->sd_rindex_vn != gl->gl_vn) {
+        if (!sdp->sd_rindex_uptodate) {
                 mutex_lock(&sdp->sd_rindex_mutex);
-                if (sdp->sd_rindex_vn != gl->gl_vn) {
+                if (!sdp->sd_rindex_uptodate) {
                         error = gfs2_ri_update(ip);
                         if (error)
                                 gfs2_glock_dq_uninit(ri_gh);
@@ -655,21 +694,31 @@ int gfs2_rindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ri_gh)
         return error;
 }
 
-static void gfs2_rgrp_in(struct gfs2_rgrp_host *rg, const void *buf)
+static void gfs2_rgrp_in(struct gfs2_rgrpd *rgd, const void *buf)
 {
         const struct gfs2_rgrp *str = buf;
+        struct gfs2_rgrp_host *rg = &rgd->rd_rg;
+        u32 rg_flags;
 
-        rg->rg_flags = be32_to_cpu(str->rg_flags);
+        rg_flags = be32_to_cpu(str->rg_flags);
+        if (rg_flags & GFS2_RGF_NOALLOC)
+                rgd->rd_flags |= GFS2_RDF_NOALLOC;
+        else
+                rgd->rd_flags &= ~GFS2_RDF_NOALLOC;
         rg->rg_free = be32_to_cpu(str->rg_free);
         rg->rg_dinodes = be32_to_cpu(str->rg_dinodes);
         rg->rg_igeneration = be64_to_cpu(str->rg_igeneration);
 }
 
-static void gfs2_rgrp_out(const struct gfs2_rgrp_host *rg, void *buf)
+static void gfs2_rgrp_out(struct gfs2_rgrpd *rgd, void *buf)
 {
         struct gfs2_rgrp *str = buf;
+        struct gfs2_rgrp_host *rg = &rgd->rd_rg;
+        u32 rg_flags = 0;
 
-        str->rg_flags = cpu_to_be32(rg->rg_flags);
+        if (rgd->rd_flags & GFS2_RDF_NOALLOC)
+                rg_flags |= GFS2_RGF_NOALLOC;
+        str->rg_flags = cpu_to_be32(rg_flags);
         str->rg_free = cpu_to_be32(rg->rg_free);
         str->rg_dinodes = cpu_to_be32(rg->rg_dinodes);
         str->__pad = cpu_to_be32(0);
@@ -726,9 +775,9 @@ int gfs2_rgrp_bh_get(struct gfs2_rgrpd *rgd)
                 }
         }
 
-        if (rgd->rd_rg_vn != gl->gl_vn) {
-                gfs2_rgrp_in(&rgd->rd_rg, (rgd->rd_bits[0].bi_bh)->b_data);
-                rgd->rd_rg_vn = gl->gl_vn;
+        if (!(rgd->rd_flags & GFS2_RDF_UPTODATE)) {
+                gfs2_rgrp_in(rgd, (rgd->rd_bits[0].bi_bh)->b_data);
+                rgd->rd_flags |= GFS2_RDF_UPTODATE;
         }
 
         spin_lock(&sdp->sd_rindex_spin);
@@ -840,7 +889,7 @@ static int try_rgrp_fit(struct gfs2_rgrpd *rgd, struct gfs2_alloc *al)
         struct gfs2_sbd *sdp = rgd->rd_sbd;
         int ret = 0;
 
-        if (rgd->rd_rg.rg_flags & GFS2_RGF_NOALLOC)
+        if (rgd->rd_flags & GFS2_RDF_NOALLOC)
                 return 0;
 
         spin_lock(&sdp->sd_rindex_spin);
@@ -866,13 +915,15 @@ static struct inode *try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked)
         u32 goal = 0, block;
         u64 no_addr;
         struct gfs2_sbd *sdp = rgd->rd_sbd;
+        unsigned int n;
 
         for(;;) {
                 if (goal >= rgd->rd_data)
                         break;
                 down_write(&sdp->sd_log_flush_lock);
+                n = 1;
                 block = rgblk_search(rgd, goal, GFS2_BLKST_UNLINKED,
-                                     GFS2_BLKST_UNLINKED);
+                                     GFS2_BLKST_UNLINKED, &n);
                 up_write(&sdp->sd_log_flush_lock);
                 if (block == BFITNOENT)
                         break;
@@ -904,24 +955,20 @@ static struct inode *try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked)
 static struct gfs2_rgrpd *recent_rgrp_first(struct gfs2_sbd *sdp,
                                             u64 rglast)
 {
-        struct gfs2_rgrpd *rgd = NULL;
+        struct gfs2_rgrpd *rgd;
 
         spin_lock(&sdp->sd_rindex_spin);
 
-        if (list_empty(&sdp->sd_rindex_recent_list))
-                goto out;
-
-        if (!rglast)
-                goto first;
-
-        list_for_each_entry(rgd, &sdp->sd_rindex_recent_list, rd_recent) {
-                if (rgd->rd_addr == rglast)
-                        goto out;
+        if (rglast) {
+                list_for_each_entry(rgd, &sdp->sd_rindex_recent_list, rd_recent) {
+                        if (rgrp_contains_block(rgd, rglast))
+                                goto out;
+                }
         }
-
-first:
-        rgd = list_entry(sdp->sd_rindex_recent_list.next, struct gfs2_rgrpd,
-                         rd_recent);
+        rgd = NULL;
+        if (!list_empty(&sdp->sd_rindex_recent_list))
+                rgd = list_entry(sdp->sd_rindex_recent_list.next,
+                                 struct gfs2_rgrpd, rd_recent);
 out:
         spin_unlock(&sdp->sd_rindex_spin);
         return rgd;
@@ -1067,7 +1114,7 @@ static struct inode *get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
 
         /* Try recently successful rgrps */
 
-        rgd = recent_rgrp_first(sdp, ip->i_last_rg_alloc);
+        rgd = recent_rgrp_first(sdp, ip->i_goal);
 
         while (rgd) {
                 rg_locked = 0;
@@ -1151,8 +1198,6 @@ static struct inode *get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
         }
 
 out:
-        ip->i_last_rg_alloc = rgd->rd_addr;
-
         if (begin) {
                 recent_rgrp_add(rgd);
                 rgd = gfs2_rgrpd_get_next(rgd);
@@ -1275,6 +1320,7 @@ unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block)
  * @goal: the goal block within the RG (start here to search for avail block)
  * @old_state: GFS2_BLKST_XXX the before-allocation state to find
  * @new_state: GFS2_BLKST_XXX the after-allocation block state
+ * @n: The extent length
  *
  * Walk rgrp's bitmap to find bits that represent a block in @old_state.
  * Add the found bitmap buffer to the transaction.
@@ -1290,13 +1336,17 @@ unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block)
  */
 
 static u32 rgblk_search(struct gfs2_rgrpd *rgd, u32 goal,
-                        unsigned char old_state, unsigned char new_state)
+                        unsigned char old_state, unsigned char new_state,
+                        unsigned int *n)
 {
         struct gfs2_bitmap *bi = NULL;
-        u32 length = rgd->rd_length;
+        const u32 length = rgd->rd_length;
         u32 blk = 0;
         unsigned int buf, x;
+        const unsigned int elen = *n;
+        const u8 *buffer;
 
+        *n = 0;
         /* Find bitmap block that contains bits for goal block */
         for (buf = 0; buf < length; buf++) {
                 bi = rgd->rd_bits + buf;
@@ -1317,12 +1367,11 @@ static u32 rgblk_search(struct gfs2_rgrpd *rgd, u32 goal,
         for (x = 0; x <= length; x++) {
                 /* The GFS2_BLKST_UNLINKED state doesn't apply to the clone
                    bitmaps, so we must search the originals for that. */
+                buffer = bi->bi_bh->b_data + bi->bi_offset;
                 if (old_state != GFS2_BLKST_UNLINKED && bi->bi_clone)
-                        blk = gfs2_bitfit(bi->bi_clone + bi->bi_offset,
-                                          bi->bi_len, goal, old_state);
-                else
-                        blk = gfs2_bitfit(bi->bi_bh->b_data + bi->bi_offset,
-                                          bi->bi_len, goal, old_state);
+                        buffer = bi->bi_clone + bi->bi_offset;
+
+                blk = gfs2_bitfit(buffer, bi->bi_len, goal, old_state);
                 if (blk != BFITNOENT)
                         break;
 
@@ -1333,12 +1382,23 @@ static u32 rgblk_search(struct gfs2_rgrpd *rgd, u32 goal,
         }
 
         if (blk != BFITNOENT && old_state != new_state) {
+                *n = 1;
                 gfs2_trans_add_bh(rgd->rd_gl, bi->bi_bh, 1);
-                gfs2_setbit(rgd, bi->bi_bh->b_data + bi->bi_offset,
+                gfs2_setbit(rgd, bi->bi_bh->b_data, bi->bi_clone, bi->bi_offset,
                             bi->bi_len, blk, new_state);
-                if (bi->bi_clone)
-                        gfs2_setbit(rgd, bi->bi_clone + bi->bi_offset,
-                                    bi->bi_len, blk, new_state);
+                goal = blk;
+                while (*n < elen) {
+                        goal++;
+                        if (goal >= (bi->bi_len * GFS2_NBBY))
+                                break;
+                        if (gfs2_testbit(rgd, buffer, bi->bi_len, goal) !=
+                            GFS2_BLKST_FREE)
+                                break;
+                        gfs2_setbit(rgd, bi->bi_bh->b_data, bi->bi_clone,
+                                    bi->bi_offset, bi->bi_len, goal,
+                                    new_state);
+                        (*n)++;
+                }
         }
 
         return (blk == BFITNOENT) ? blk : (bi->bi_start * GFS2_NBBY) + blk;
@@ -1393,7 +1453,7 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, u64 bstart,
                                bi->bi_len);
                 }
                 gfs2_trans_add_bh(rgd->rd_gl, bi->bi_bh, 1);
-                gfs2_setbit(rgd, bi->bi_bh->b_data + bi->bi_offset,
+                gfs2_setbit(rgd, bi->bi_bh->b_data, NULL, bi->bi_offset,
                             bi->bi_len, buf_blk, new_state);
         }
 
@@ -1401,13 +1461,13 @@ static struct gfs2_rgrpd *rgblk_free(struct gfs2_sbd *sdp, u64 bstart,
 }
 
 /**
- * gfs2_alloc_data - Allocate a data block
- * @ip: the inode to allocate the data block for
+ * gfs2_alloc_block - Allocate a block
+ * @ip: the inode to allocate the block for
  *
  * Returns: the allocated block
  */
 
-u64 gfs2_alloc_data(struct gfs2_inode *ip)
+u64 gfs2_alloc_block(struct gfs2_inode *ip, unsigned int *n)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
         struct gfs2_alloc *al = ip->i_alloc;
@@ -1415,77 +1475,31 @@ u64 gfs2_alloc_data(struct gfs2_inode *ip)
         u32 goal, blk;
         u64 block;
 
-        if (rgrp_contains_block(rgd, ip->i_di.di_goal_data))
-                goal = ip->i_di.di_goal_data - rgd->rd_data0;
+        if (rgrp_contains_block(rgd, ip->i_goal))
+                goal = ip->i_goal - rgd->rd_data0;
         else
-                goal = rgd->rd_last_alloc_data;
+                goal = rgd->rd_last_alloc;
 
-        blk = rgblk_search(rgd, goal, GFS2_BLKST_FREE, GFS2_BLKST_USED);
+        blk = rgblk_search(rgd, goal, GFS2_BLKST_FREE, GFS2_BLKST_USED, n);
         BUG_ON(blk == BFITNOENT);
-        rgd->rd_last_alloc_data = blk;
 
+        rgd->rd_last_alloc = blk;
         block = rgd->rd_data0 + blk;
-        ip->i_di.di_goal_data = block;
+        ip->i_goal = block;
 
-        gfs2_assert_withdraw(sdp, rgd->rd_rg.rg_free);
-        rgd->rd_rg.rg_free--;
+        gfs2_assert_withdraw(sdp, rgd->rd_rg.rg_free >= *n);
+        rgd->rd_rg.rg_free -= *n;
 
         gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
-        gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+        gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
 
-        al->al_alloced++;
+        al->al_alloced += *n;
 
-        gfs2_statfs_change(sdp, 0, -1, 0);
-        gfs2_quota_change(ip, +1, ip->i_inode.i_uid, ip->i_inode.i_gid);
+        gfs2_statfs_change(sdp, 0, -*n, 0);
+        gfs2_quota_change(ip, *n, ip->i_inode.i_uid, ip->i_inode.i_gid);
 
         spin_lock(&sdp->sd_rindex_spin);
-        rgd->rd_free_clone--;
-        spin_unlock(&sdp->sd_rindex_spin);
-
-        return block;
-}
-
-/**
- * gfs2_alloc_meta - Allocate a metadata block
- * @ip: the inode to allocate the metadata block for
- *
- * Returns: the allocated block
- */
-
-u64 gfs2_alloc_meta(struct gfs2_inode *ip)
-{
-        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        struct gfs2_alloc *al = ip->i_alloc;
-        struct gfs2_rgrpd *rgd = al->al_rgd;
-        u32 goal, blk;
-        u64 block;
-
-        if (rgrp_contains_block(rgd, ip->i_di.di_goal_meta))
-                goal = ip->i_di.di_goal_meta - rgd->rd_data0;
-        else
-                goal = rgd->rd_last_alloc_meta;
-
-        blk = rgblk_search(rgd, goal, GFS2_BLKST_FREE, GFS2_BLKST_USED);
-        BUG_ON(blk == BFITNOENT);
-        rgd->rd_last_alloc_meta = blk;
-
-        block = rgd->rd_data0 + blk;
-        ip->i_di.di_goal_meta = block;
-
-        gfs2_assert_withdraw(sdp, rgd->rd_rg.rg_free);
-        rgd->rd_rg.rg_free--;
-
-        gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
-        gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
-
-        al->al_alloced++;
-
-        gfs2_statfs_change(sdp, 0, -1, 0);
-        gfs2_quota_change(ip, +1, ip->i_inode.i_uid, ip->i_inode.i_gid);
-        gfs2_trans_add_unrevoke(sdp, block);
-
-        spin_lock(&sdp->sd_rindex_spin);
-        rgd->rd_free_clone--;
+        rgd->rd_free_clone -= *n;
         spin_unlock(&sdp->sd_rindex_spin);
 
         return block;
@@ -1505,12 +1519,13 @@ u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
         struct gfs2_rgrpd *rgd = al->al_rgd;
         u32 blk;
         u64 block;
+        unsigned int n = 1;
 
-        blk = rgblk_search(rgd, rgd->rd_last_alloc_meta,
-                           GFS2_BLKST_FREE, GFS2_BLKST_DINODE);
+        blk = rgblk_search(rgd, rgd->rd_last_alloc,
+                           GFS2_BLKST_FREE, GFS2_BLKST_DINODE, &n);
         BUG_ON(blk == BFITNOENT);
 
-        rgd->rd_last_alloc_meta = blk;
+        rgd->rd_last_alloc = blk;
 
         block = rgd->rd_data0 + blk;
 
@@ -1519,12 +1534,12 @@ u64 gfs2_alloc_di(struct gfs2_inode *dip, u64 *generation)
         rgd->rd_rg.rg_dinodes++;
         *generation = rgd->rd_rg.rg_igeneration++;
         gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
-        gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+        gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
 
         al->al_alloced++;
 
         gfs2_statfs_change(sdp, 0, -1, +1);
-        gfs2_trans_add_unrevoke(sdp, block);
+        gfs2_trans_add_unrevoke(sdp, block, 1);
 
         spin_lock(&sdp->sd_rindex_spin);
         rgd->rd_free_clone--;
@@ -1553,7 +1568,7 @@ void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen)
         rgd->rd_rg.rg_free += blen;
 
         gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
-        gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+        gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
 
         gfs2_trans_add_rg(rgd);
 
@@ -1581,7 +1596,7 @@ void gfs2_free_meta(struct gfs2_inode *ip, u64 bstart, u32 blen)
         rgd->rd_rg.rg_free += blen;
 
         gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
-        gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+        gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
 
         gfs2_trans_add_rg(rgd);
 
@@ -1601,7 +1616,7 @@ void gfs2_unlink_di(struct inode *inode)
         if (!rgd)
                 return;
         gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
-        gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+        gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
         gfs2_trans_add_rg(rgd);
 }
 
@@ -1621,7 +1636,7 @@ static void gfs2_free_uninit_di(struct gfs2_rgrpd *rgd, u64 blkno)
         rgd->rd_rg.rg_free++;
 
         gfs2_trans_add_bh(rgd->rd_gl, rgd->rd_bits[0].bi_bh, 1);
-        gfs2_rgrp_out(&rgd->rd_rg, rgd->rd_bits[0].bi_bh->b_data);
+        gfs2_rgrp_out(rgd, rgd->rd_bits[0].bi_bh->b_data);
 
         gfs2_statfs_change(sdp, 0, +1, -1);
         gfs2_trans_add_rg(rgd);
@@ -1699,8 +1714,7 @@ void gfs2_rlist_add(struct gfs2_sbd *sdp, struct gfs2_rgrp_list *rlist,
  *
  */
 
-void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state,
-                      int flags)
+void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state)
 {
         unsigned int x;
 
@@ -1708,7 +1722,7 @@ void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state,
                                 GFP_NOFS | __GFP_NOFAIL);
         for (x = 0; x < rlist->rl_rgrps; x++)
                 gfs2_holder_init(rlist->rl_rgd[x]->rd_gl,
-                                state, flags,
+                                state, 0,
                                 &rlist->rl_ghs[x]);
 }
 
diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h
index 149bb161f4b6..3181c7e624bf 100644
--- a/fs/gfs2/rgrp.h
+++ b/fs/gfs2/rgrp.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -46,8 +46,7 @@ void gfs2_inplace_release(struct gfs2_inode *ip);
 
 unsigned char gfs2_get_block_type(struct gfs2_rgrpd *rgd, u64 block);
 
-u64 gfs2_alloc_data(struct gfs2_inode *ip);
-u64 gfs2_alloc_meta(struct gfs2_inode *ip);
+u64 gfs2_alloc_block(struct gfs2_inode *ip, unsigned int *n);
 u64 gfs2_alloc_di(struct gfs2_inode *ip, u64 *generation);
 
 void gfs2_free_data(struct gfs2_inode *ip, u64 bstart, u32 blen);
@@ -64,8 +63,7 @@ struct gfs2_rgrp_list {
 
 void gfs2_rlist_add(struct gfs2_sbd *sdp, struct gfs2_rgrp_list *rlist,
                     u64 block);
-void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state,
-                      int flags);
+void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state);
 void gfs2_rlist_free(struct gfs2_rgrp_list *rlist);
 u64 gfs2_ri_total(struct gfs2_sbd *sdp);
 
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index ef0562c3bc71..7aeacbc65f35 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -210,7 +210,7 @@ int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector)
         struct page *page;
         struct bio *bio;
 
-        page = alloc_page(GFP_KERNEL);
+        page = alloc_page(GFP_NOFS);
         if (unlikely(!page))
                 return -ENOBUFS;
 
@@ -218,7 +218,7 @@ int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector)
         ClearPageDirty(page);
         lock_page(page);
 
-        bio = bio_alloc(GFP_KERNEL, 1);
+        bio = bio_alloc(GFP_NOFS, 1);
         if (unlikely(!bio)) {
                 __free_page(page);
                 return -ENOBUFS;
@@ -316,6 +316,7 @@ int gfs2_read_sb(struct gfs2_sbd *sdp, struct gfs2_glock *gl, int silent)
                 sdp->sd_heightsize[x] = space;
         }
         sdp->sd_max_height = x;
+        sdp->sd_heightsize[x] = ~0;
         gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT);
 
         sdp->sd_jheightsize[0] = sdp->sd_sb.sb_bsize -
@@ -334,6 +335,7 @@ int gfs2_read_sb(struct gfs2_sbd *sdp, struct gfs2_glock *gl, int silent)
                 sdp->sd_jheightsize[x] = space;
         }
         sdp->sd_max_jheight = x;
+        sdp->sd_jheightsize[x] = ~0;
         gfs2_assert(sdp, sdp->sd_max_jheight <= GFS2_MAX_META_HEIGHT);
 
         return 0;
diff --git a/fs/gfs2/super.h b/fs/gfs2/super.h
index 60a870e430be..44361ecc44f7 100644
--- a/fs/gfs2/super.h
+++ b/fs/gfs2/super.h
@@ -17,6 +17,7 @@ void gfs2_tune_init(struct gfs2_tune *gt);
 int gfs2_check_sb(struct gfs2_sbd *sdp, struct gfs2_sb_host *sb, int silent);
 int gfs2_read_sb(struct gfs2_sbd *sdp, struct gfs2_glock *gl, int silent);
 int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector);
+void gfs2_lm_unmount(struct gfs2_sbd *sdp);
 
 static inline unsigned int gfs2_jindex_size(struct gfs2_sbd *sdp)
 {
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index eaa3b7b2f99e..9ab9fc85ecd0 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -20,7 +20,6 @@
 
 #include "gfs2.h"
 #include "incore.h"
-#include "lm.h"
 #include "sys.h"
 #include "super.h"
 #include "glock.h"
@@ -328,15 +327,9 @@ static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf)                 \
 }                                                                           \
 static struct counters_attr counters_attr_##name = __ATTR_RO(name)
 
-COUNTERS_ATTR(glock_count,      "%u\n");
-COUNTERS_ATTR(glock_held_count, "%u\n");
-COUNTERS_ATTR(inode_count,      "%u\n");
 COUNTERS_ATTR(reclaimed,        "%u\n");
 
 static struct attribute *counters_attrs[] = {
-        &counters_attr_glock_count.attr,
-        &counters_attr_glock_held_count.attr,
-        &counters_attr_inode_count.attr,
         &counters_attr_reclaimed.attr,
         NULL,
 };
diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c
index 73e5d92a657c..f677b8a83f0c 100644
--- a/fs/gfs2/trans.c
+++ b/fs/gfs2/trans.c
@@ -146,30 +146,25 @@ void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd)
         lops_add(sdp, &bd->bd_le);
 }
 
-void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno)
+void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno, unsigned int len)
 {
-        struct gfs2_bufdata *bd;
-        int found = 0;
+        struct gfs2_bufdata *bd, *tmp;
+        struct gfs2_trans *tr = current->journal_info;
+        unsigned int n = len;
 
         gfs2_log_lock(sdp);
-
-        list_for_each_entry(bd, &sdp->sd_log_le_revoke, bd_le.le_list) {
-                if (bd->bd_blkno == blkno) {
+        list_for_each_entry_safe(bd, tmp, &sdp->sd_log_le_revoke, bd_le.le_list) {
+                if ((bd->bd_blkno >= blkno) && (bd->bd_blkno < (blkno + len))) {
                         list_del_init(&bd->bd_le.le_list);
                         gfs2_assert_withdraw(sdp, sdp->sd_log_num_revoke);
                         sdp->sd_log_num_revoke--;
-                        found = 1;
-                        break;
+                        kmem_cache_free(gfs2_bufdata_cachep, bd);
+                        tr->tr_num_revoke_rm++;
+                        if (--n == 0)
+                                break;
                 }
         }
-
         gfs2_log_unlock(sdp);
-
-        if (found) {
-                struct gfs2_trans *tr = current->journal_info;
-                kmem_cache_free(gfs2_bufdata_cachep, bd);
-                tr->tr_num_revoke_rm++;
-        }
 }
 
 void gfs2_trans_add_rg(struct gfs2_rgrpd *rgd)
diff --git a/fs/gfs2/trans.h b/fs/gfs2/trans.h
index e826f0dab80a..edf9d4bd908e 100644
--- a/fs/gfs2/trans.h
+++ b/fs/gfs2/trans.h
@@ -32,7 +32,7 @@ void gfs2_trans_end(struct gfs2_sbd *sdp);
 
 void gfs2_trans_add_bh(struct gfs2_glock *gl, struct buffer_head *bh, int meta);
 void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
-void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno);
+void gfs2_trans_add_unrevoke(struct gfs2_sbd *sdp, u64 blkno, unsigned int len);
 void gfs2_trans_add_rg(struct gfs2_rgrpd *rgd);
 
 #endif /* __TRANS_DOT_H__ */
diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c
index 424a0774eda8..d31e355c61fb 100644
--- a/fs/gfs2/util.c
+++ b/fs/gfs2/util.c
@@ -19,12 +19,12 @@
 #include "gfs2.h"
 #include "incore.h"
 #include "glock.h"
-#include "lm.h"
 #include "util.h"
 
 struct kmem_cache *gfs2_glock_cachep __read_mostly;
 struct kmem_cache *gfs2_inode_cachep __read_mostly;
 struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
+struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
 
 void gfs2_assert_i(struct gfs2_sbd *sdp)
 {
@@ -32,6 +32,28 @@ void gfs2_assert_i(struct gfs2_sbd *sdp)
                sdp->sd_fsname);
 }
 
+int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
+{
+        va_list args;
+
+        if (test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
+                return 0;
+
+        va_start(args, fmt);
+        vprintk(fmt, args);
+        va_end(args);
+
+        fs_err(sdp, "about to withdraw this file system\n");
+        BUG_ON(sdp->sd_args.ar_debug);
+
+        fs_err(sdp, "telling LM to withdraw\n");
+        gfs2_withdraw_lockproto(&sdp->sd_lockstruct);
+        fs_err(sdp, "withdrawn\n");
+        dump_stack();
+
+        return -1;
+}
+
 /**
  * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
  * Returns: -1 if this call withdrew the machine,
diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h
index 28938a46cf47..509c5d60bd80 100644
--- a/fs/gfs2/util.h
+++ b/fs/gfs2/util.h
@@ -147,6 +147,7 @@ gfs2_io_error_bh_i((sdp), (bh), __FUNCTION__, __FILE__, __LINE__);
 extern struct kmem_cache *gfs2_glock_cachep;
 extern struct kmem_cache *gfs2_inode_cachep;
 extern struct kmem_cache *gfs2_bufdata_cachep;
+extern struct kmem_cache *gfs2_rgrpd_cachep;
 
 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
                                            unsigned int *p)
@@ -163,6 +164,7 @@ gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
 
 void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
                       unsigned int bit, int new_value);
+int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...);
 
 #endif /* __UTIL_DOT_H__ */
 
diff --git a/include/linux/lm_interface.h b/include/linux/lm_interface.h
index 1418fdc9ac02..f274997bc283 100644
--- a/include/linux/lm_interface.h
+++ b/include/linux/lm_interface.h
@@ -21,9 +21,15 @@ typedef void (*lm_callback_t) (void *ptr, unsigned int type, void *data);
  * modify the filesystem.  The lock module shouldn't assign a journal to the FS
  * mount.  It shouldn't send recovery callbacks to the FS mount.  If the node
  * dies or withdraws, all locks can be wiped immediately.
+ *
+ * LM_MFLAG_CONV_NODROP
+ * Do not allow the dlm to internally resolve conversion deadlocks by demoting
+ * the lock to unlocked and then reacquiring it in the requested mode. Instead,
+ * it should cancel the request and return LM_OUT_CONV_DEADLK.
  */
 
 #define LM_MFLAG_SPECTATOR      0x00000001
+#define LM_MFLAG_CONV_NODROP    0x00000002
 
 /*
  * lm_lockstruct flags
@@ -110,6 +116,9 @@ typedef void (*lm_callback_t) (void *ptr, unsigned int type, void *data);
  *
  * LM_OUT_ASYNC
  * The result of the request will be returned in an LM_CB_ASYNC callback.
+ *
+ * LM_OUT_CONV_DEADLK
+ * The lock request was canceled do to a conversion deadlock.
  */
 
 #define LM_OUT_ST_MASK          0x00000003
@@ -117,6 +126,7 @@ typedef void (*lm_callback_t) (void *ptr, unsigned int type, void *data);
 #define LM_OUT_CANCELED         0x00000008
 #define LM_OUT_ASYNC            0x00000080
 #define LM_OUT_ERROR            0x00000100
+#define LM_OUT_CONV_DEADLK      0x00000200
 
 /*
  * lm_callback_t types