GFS2: decouple quota allocations from block allocations

This patch separates the code pertaining to allocations into two
parts: quota-related information and block reservations.
This patch also moves all the block reservation structure allocations to
function gfs2_inplace_reserve to simplify the code, and moves
the frees to function gfs2_inplace_release.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

13 files changed, 188 insertions, 181 deletions

diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 4858e1fed8b1..501e5cba09b3 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -615,7 +615,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
         unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
         int alloc_required;
         int error = 0;
-        struct gfs2_alloc *al = NULL;
+        struct gfs2_qadata *qa = NULL;
         pgoff_t index = pos >> PAGE_CACHE_SHIFT;
         unsigned from = pos & (PAGE_CACHE_SIZE - 1);
         struct page *page;
@@ -639,8 +639,8 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
                 gfs2_write_calc_reserv(ip, len, &data_blocks, &ind_blocks);
 
         if (alloc_required) {
-                al = gfs2_alloc_get(ip);
-                if (!al) {
+                qa = gfs2_qadata_get(ip);
+                if (!qa) {
                         error = -ENOMEM;
                         goto out_unlock;
                 }
@@ -649,8 +649,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
                 if (error)
                         goto out_alloc_put;
 
-                al->al_requested = data_blocks + ind_blocks;
-                error = gfs2_inplace_reserve(ip);
+                error = gfs2_inplace_reserve(ip, data_blocks + ind_blocks);
                 if (error)
                         goto out_qunlock;
         }
@@ -711,7 +710,7 @@ out_trans_fail:
 out_qunlock:
                 gfs2_quota_unlock(ip);
 out_alloc_put:
-                gfs2_alloc_put(ip);
+                gfs2_qadata_put(ip);
         }
 out_unlock:
         if (&ip->i_inode == sdp->sd_rindex) {
@@ -848,7 +847,7 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
         struct gfs2_sbd *sdp = GFS2_SB(inode);
         struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode);
         struct buffer_head *dibh;
-        struct gfs2_alloc *al = ip->i_alloc;
+        struct gfs2_qadata *qa = ip->i_qadata;
         unsigned int from = pos & (PAGE_CACHE_SIZE - 1);
         unsigned int to = from + len;
         int ret;
@@ -880,10 +879,11 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
         brelse(dibh);
 failed:
         gfs2_trans_end(sdp);
-        if (al) {
+        if (ip->i_res)
                 gfs2_inplace_release(ip);
+        if (qa) {
                 gfs2_quota_unlock(ip);
-                gfs2_alloc_put(ip);
+                gfs2_qadata_put(ip);
         }
         if (inode == sdp->sd_rindex) {
                 gfs2_glock_dq(&m_ip->i_gh);
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index cb74312eb270..14a704015970 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -1041,7 +1041,7 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
                 lblock = (size - 1) >> sdp->sd_sb.sb_bsize_shift;
 
         find_metapath(sdp, lblock, &mp, ip->i_height);
-        if (!gfs2_alloc_get(ip))
+        if (!gfs2_qadata_get(ip))
                 return -ENOMEM;
 
         error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@@ -1061,7 +1061,7 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
         gfs2_quota_unhold(ip);
 
 out:
-        gfs2_alloc_put(ip);
+        gfs2_qadata_put(ip);
         return error;
 }
 
@@ -1163,21 +1163,20 @@ static int do_grow(struct inode *inode, u64 size)
         struct gfs2_inode *ip = GFS2_I(inode);
         struct gfs2_sbd *sdp = GFS2_SB(inode);
         struct buffer_head *dibh;
-        struct gfs2_alloc *al = NULL;
+        struct gfs2_qadata *qa = NULL;
         int error;
 
         if (gfs2_is_stuffed(ip) &&
             (size > (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)))) {
-                al = gfs2_alloc_get(ip);
-                if (al == NULL)
+                qa = gfs2_qadata_get(ip);
+                if (qa == NULL)
                         return -ENOMEM;
 
                 error = gfs2_quota_lock_check(ip);
                 if (error)
                         goto do_grow_alloc_put;
 
-                al->al_requested = 1;
-                error = gfs2_inplace_reserve(ip);
+                error = gfs2_inplace_reserve(ip, 1);
                 if (error)
                         goto do_grow_qunlock;
         }
@@ -1186,7 +1185,7 @@ static int do_grow(struct inode *inode, u64 size)
         if (error)
                 goto do_grow_release;
 
-        if (al) {
+        if (qa) {
                 error = gfs2_unstuff_dinode(ip, NULL);
                 if (error)
                         goto do_end_trans;
@@ -1205,12 +1204,12 @@ static int do_grow(struct inode *inode, u64 size)
 do_end_trans:
         gfs2_trans_end(sdp);
 do_grow_release:
-        if (al) {
+        if (qa) {
                 gfs2_inplace_release(ip);
 do_grow_qunlock:
                 gfs2_quota_unlock(ip);
 do_grow_alloc_put:
-                gfs2_alloc_put(ip);
+                gfs2_qadata_put(ip);
         }
         return error;
 }
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index f8485da3b853..c35573abd371 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -1850,7 +1850,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
         if (!ht)
                 return -ENOMEM;
 
-        if (!gfs2_alloc_get(dip)) {
+        if (!gfs2_qadata_get(dip)) {
                 error = -ENOMEM;
                 goto out;
         }
@@ -1939,7 +1939,7 @@ out_rlist:
         gfs2_rlist_free(&rlist);
         gfs2_quota_unhold(dip);
 out_put:
-        gfs2_alloc_put(dip);
+        gfs2_qadata_put(dip);
 out:
         kfree(ht);
         return error;
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 9b6c6ac351a8..42ceb23651e5 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -365,7 +365,7 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
         u64 pos = page->index << PAGE_CACHE_SHIFT;
         unsigned int data_blocks, ind_blocks, rblocks;
         struct gfs2_holder gh;
-        struct gfs2_alloc *al;
+        struct gfs2_qadata *qa;
         loff_t size;
         int ret;
 
@@ -393,16 +393,15 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
         }
 
         ret = -ENOMEM;
-        al = gfs2_alloc_get(ip);
-        if (al == NULL)
+        qa = gfs2_qadata_get(ip);
+        if (qa == NULL)
                 goto out_unlock;
 
         ret = gfs2_quota_lock_check(ip);
         if (ret)
                 goto out_alloc_put;
         gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
-        al->al_requested = data_blocks + ind_blocks;
-        ret = gfs2_inplace_reserve(ip);
+        ret = gfs2_inplace_reserve(ip, data_blocks + ind_blocks);
         if (ret)
                 goto out_quota_unlock;
 
@@ -448,7 +447,7 @@ out_trans_fail:
 out_quota_unlock:
         gfs2_quota_unlock(ip);
 out_alloc_put:
-        gfs2_alloc_put(ip);
+        gfs2_qadata_put(ip);
 out_unlock:
         gfs2_glock_dq(&gh);
 out:
@@ -750,7 +749,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
         struct gfs2_inode *ip = GFS2_I(inode);
         unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
         loff_t bytes, max_bytes;
-        struct gfs2_alloc *al;
+        struct gfs2_qadata *qa;
         int error;
         const loff_t pos = offset;
         const loff_t count = len;
@@ -784,8 +783,8 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
         while (len > 0) {
                 if (len < bytes)
                         bytes = len;
-                al = gfs2_alloc_get(ip);
-                if (!al) {
+                qa = gfs2_qadata_get(ip);
+                if (!qa) {
                         error = -ENOMEM;
                         goto out_unlock;
                 }
@@ -797,8 +796,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
 retry:
                 gfs2_write_calc_reserv(ip, bytes, &data_blocks, &ind_blocks);
 
-                al->al_requested = data_blocks + ind_blocks;
-                error = gfs2_inplace_reserve(ip);
+                error = gfs2_inplace_reserve(ip, data_blocks + ind_blocks);
                 if (error) {
                         if (error == -ENOSPC && bytes > sdp->sd_sb.sb_bsize) {
                                 bytes >>= 1;
@@ -812,7 +810,6 @@ retry:
                 max_bytes = bytes;
                 calc_max_reserv(ip, (len > max_chunk_size)? max_chunk_size: len,
                                 &max_bytes, &data_blocks, &ind_blocks);
-                al->al_requested = data_blocks + ind_blocks;
 
                 rblocks = RES_DINODE + ind_blocks + RES_STATFS + RES_QUOTA +
                           RES_RG_HDR + gfs2_rg_blocks(ip);
@@ -834,7 +831,7 @@ retry:
                 offset += max_bytes;
                 gfs2_inplace_release(ip);
                 gfs2_quota_unlock(ip);
-                gfs2_alloc_put(ip);
+                gfs2_qadata_put(ip);
         }
 
         if (error == 0)
@@ -846,7 +843,7 @@ out_trans_fail:
 out_qunlock:
         gfs2_quota_unlock(ip);
 out_alloc_put:
-        gfs2_alloc_put(ip);
+        gfs2_qadata_put(ip);
 out_unlock:
         gfs2_glock_dq(&ip->i_gh);
 out_uninit:
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 32f5beccb74b..e1d3bb59945c 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -244,16 +244,16 @@ struct gfs2_glock {
 
 #define GFS2_MIN_LVB_SIZE 32    /* Min size of LVB that gfs2 supports */
 
-struct gfs2_alloc {
+struct gfs2_qadata { /* quota allocation data */
         /* Quota stuff */
-        struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
-        struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
-        unsigned int al_qd_num;
-
-        u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
+        struct gfs2_quota_data *qa_qd[2*MAXQUOTAS];
+        struct gfs2_holder qa_qd_ghs[2*MAXQUOTAS];
+        unsigned int qa_qd_num;
+};
 
-        /* Filled in by gfs2_inplace_reserve() */
-        struct gfs2_holder al_rgd_gh;
+struct gfs2_blkreserv {
+        u32 rs_requested; /* Filled in by caller of gfs2_inplace_reserve() */
+        struct gfs2_holder rs_rgd_gh; /* Filled in by gfs2_inplace_reserve() */
 };
 
 enum {
@@ -274,7 +274,8 @@ struct gfs2_inode {
         struct gfs2_glock *i_gl; /* Move into i_gh? */
         struct gfs2_holder i_iopen_gh;
         struct gfs2_holder i_gh; /* for prepare/commit_write only */
-        struct gfs2_alloc *i_alloc;
+        struct gfs2_qadata *i_qadata; /* quota allocation data */
+        struct gfs2_blkreserv *i_res; /* resource group block reservation */
         struct gfs2_rgrpd *i_rgd;
         u64 i_goal;     /* goal block for allocations */
         struct rw_semaphore i_rw_mutex;
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 3ab192bac7d3..ab8c429880a5 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -391,11 +391,11 @@ static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
         int error;
         int dblocks = 0;
 
-        if (gfs2_alloc_get(dip) == NULL)
-                return -ENOMEM;
+        error = gfs2_rindex_update(sdp);
+        if (error)
+                fs_warn(sdp, "rindex update returns %d\n", error);
 
-        dip->i_alloc->al_requested = RES_DINODE;
-        error = gfs2_inplace_reserve(dip);
+        error = gfs2_inplace_reserve(dip, RES_DINODE);
         if (error)
                 goto out;
 
@@ -410,7 +410,6 @@ static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
 out_ipreserv:
         gfs2_inplace_release(dip);
 out:
-        gfs2_alloc_put(dip);
         return error;
 }
 
@@ -526,7 +525,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
         int error;
 
         munge_mode_uid_gid(dip, &mode, &uid, &gid);
-        if (!gfs2_alloc_get(dip))
+        if (!gfs2_qadata_get(dip))
                 return -ENOMEM;
 
         error = gfs2_quota_lock(dip, uid, gid);
@@ -548,7 +547,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
 out_quota:
         gfs2_quota_unlock(dip);
 out:
-        gfs2_alloc_put(dip);
+        gfs2_qadata_put(dip);
         return error;
 }
 
@@ -556,13 +555,13 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
                        struct gfs2_inode *ip)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
-        struct gfs2_alloc *al;
+        struct gfs2_qadata *qa;
         int alloc_required;
         struct buffer_head *dibh;
         int error;
 
-        al = gfs2_alloc_get(dip);
-        if (!al)
+        qa = gfs2_qadata_get(dip);
+        if (!qa)
                 return -ENOMEM;
 
         error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@@ -577,9 +576,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
                 if (error)
                         goto fail_quota_locks;
 
-                al->al_requested = sdp->sd_max_dirres;
-
-                error = gfs2_inplace_reserve(dip);
+                error = gfs2_inplace_reserve(dip, sdp->sd_max_dirres);
                 if (error)
                         goto fail_quota_locks;
 
@@ -620,7 +617,7 @@ fail_quota_locks:
         gfs2_quota_unlock(dip);
 
 fail:
-        gfs2_alloc_put(dip);
+        gfs2_qadata_put(dip);
         return error;
 }
 
@@ -729,9 +726,12 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
                 brelse(bh);
 
         gfs2_trans_end(sdp);
-        gfs2_inplace_release(dip);
+        /* Check if we reserved space in the rgrp. Function link_dinode may
+           not, depending on whether alloc is required. */
+        if (dip->i_res)
+                gfs2_inplace_release(dip);
         gfs2_quota_unlock(dip);
-        gfs2_alloc_put(dip);
+        gfs2_qadata_put(dip);
         mark_inode_dirty(inode);
         gfs2_glock_dq_uninit_m(2, ghs);
         d_instantiate(dentry, inode);
@@ -876,8 +876,9 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
         error = 0;
 
         if (alloc_required) {
-                struct gfs2_alloc *al = gfs2_alloc_get(dip);
-                if (!al) {
+                struct gfs2_qadata *qa = gfs2_qadata_get(dip);
+
+                if (!qa) {
                         error = -ENOMEM;
                         goto out_gunlock;
                 }
@@ -886,9 +887,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
                 if (error)
                         goto out_alloc;
 
-                al->al_requested = sdp->sd_max_dirres;
-
-                error = gfs2_inplace_reserve(dip);
+                error = gfs2_inplace_reserve(dip, sdp->sd_max_dirres);
                 if (error)
                         goto out_gunlock_q;
 
@@ -931,7 +930,7 @@ out_gunlock_q:
                 gfs2_quota_unlock(dip);
 out_alloc:
         if (alloc_required)
-                gfs2_alloc_put(dip);
+                gfs2_qadata_put(dip);
 out_gunlock:
         gfs2_glock_dq(ghs + 1);
 out_child:
@@ -1354,8 +1353,9 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
         error = 0;
 
         if (alloc_required) {
-                struct gfs2_alloc *al = gfs2_alloc_get(ndip);
-                if (!al) {
+                struct gfs2_qadata *qa = gfs2_qadata_get(ndip);
+
+                if (!qa) {
                         error = -ENOMEM;
                         goto out_gunlock;
                 }
@@ -1364,9 +1364,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
                 if (error)
                         goto out_alloc;
 
-                al->al_requested = sdp->sd_max_dirres;
-
-                error = gfs2_inplace_reserve(ndip);
+                error = gfs2_inplace_reserve(ndip, sdp->sd_max_dirres);
                 if (error)
                         goto out_gunlock_q;
 
@@ -1427,7 +1425,7 @@ out_gunlock_q:
                 gfs2_quota_unlock(ndip);
 out_alloc:
         if (alloc_required)
-                gfs2_alloc_put(ndip);
+                gfs2_qadata_put(ndip);
 out_gunlock:
         while (x--) {
                 gfs2_glock_dq(ghs + x);
@@ -1588,7 +1586,7 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
         if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
                 ogid = ngid = NO_QUOTA_CHANGE;
 
-        if (!gfs2_alloc_get(ip))
+        if (!gfs2_qadata_get(ip))
                 return -ENOMEM;
 
         error = gfs2_quota_lock(ip, nuid, ngid);
@@ -1620,7 +1618,7 @@ out_end_trans:
 out_gunlock_q:
         gfs2_quota_unlock(ip);
 out_alloc:
-        gfs2_alloc_put(ip);
+        gfs2_qadata_put(ip);
         return error;
 }
 
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index 8a139ff1919f..c150298e2d8e 100644
--- a/fs/gfs2/main.c
+++ b/fs/gfs2/main.c
@@ -40,7 +40,8 @@ static void gfs2_init_inode_once(void *foo)
         inode_init_once(&ip->i_inode);
         init_rwsem(&ip->i_rw_mutex);
         INIT_LIST_HEAD(&ip->i_trunc_list);
-        ip->i_alloc = NULL;
+        ip->i_qadata = NULL;
+        ip->i_res = NULL;
         ip->i_hash_cache = NULL;
 }
 
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index d1962b2f67f9..98a01db1f6dc 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -494,11 +494,11 @@ static void qdsb_put(struct gfs2_quota_data *qd)
 int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        struct gfs2_alloc *al = ip->i_alloc;
-        struct gfs2_quota_data **qd = al->al_qd;
+        struct gfs2_qadata *qa = ip->i_qadata;
+        struct gfs2_quota_data **qd = qa->qa_qd;
         int error;
 
-        if (gfs2_assert_warn(sdp, !al->al_qd_num) ||
+        if (gfs2_assert_warn(sdp, !qa->qa_qd_num) ||
             gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags)))
                 return -EIO;
 
@@ -508,20 +508,20 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
         error = qdsb_get(sdp, QUOTA_USER, ip->i_inode.i_uid, qd);
         if (error)
                 goto out;
-        al->al_qd_num++;
+        qa->qa_qd_num++;
         qd++;
 
         error = qdsb_get(sdp, QUOTA_GROUP, ip->i_inode.i_gid, qd);
         if (error)
                 goto out;
-        al->al_qd_num++;
+        qa->qa_qd_num++;
         qd++;
 
         if (uid != NO_QUOTA_CHANGE && uid != ip->i_inode.i_uid) {
                 error = qdsb_get(sdp, QUOTA_USER, uid, qd);
                 if (error)
                         goto out;
-                al->al_qd_num++;
+                qa->qa_qd_num++;
                 qd++;
         }
 
@@ -529,7 +529,7 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
                 error = qdsb_get(sdp, QUOTA_GROUP, gid, qd);
                 if (error)
                         goto out;
-                al->al_qd_num++;
+                qa->qa_qd_num++;
                 qd++;
         }
 
@@ -542,16 +542,16 @@ out:
 void gfs2_quota_unhold(struct gfs2_inode *ip)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        struct gfs2_alloc *al = ip->i_alloc;
+        struct gfs2_qadata *qa = ip->i_qadata;
         unsigned int x;
 
         gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags));
 
-        for (x = 0; x < al->al_qd_num; x++) {
-                qdsb_put(al->al_qd[x]);
-                al->al_qd[x] = NULL;
+        for (x = 0; x < qa->qa_qd_num; x++) {
+                qdsb_put(qa->qa_qd[x]);
+                qa->qa_qd[x] = NULL;
         }
-        al->al_qd_num = 0;
+        qa->qa_qd_num = 0;
 }
 
 static int sort_qd(const void *a, const void *b)
@@ -762,7 +762,6 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
         struct gfs2_quota_data *qd;
         loff_t offset;
         unsigned int nalloc = 0, blocks;
-        struct gfs2_alloc *al = NULL;
         int error;
 
         gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota),
@@ -792,26 +791,19 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
                         nalloc++;
         }
 
-        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;
         /* +3 in the end for unstuffing block, inode size update block
          * and another block in case quota straddles page boundary and 
          * two blocks need to be updated instead of 1 */
         blocks = num_qd * data_blocks + RES_DINODE + num_qd + 3;
 
-        if (nalloc)
-                al->al_requested += nalloc * (data_blocks + ind_blocks);                
-        error = gfs2_inplace_reserve(ip);
+        error = gfs2_inplace_reserve(ip, 1 +
+                                     (nalloc * (data_blocks + ind_blocks)));
         if (error)
                 goto out_alloc;
 
@@ -840,8 +832,6 @@ out_end_trans:
 out_ipres:
         gfs2_inplace_release(ip);
 out_alloc:
-        gfs2_alloc_put(ip);
-out_gunlock:
         gfs2_glock_dq_uninit(&i_gh);
 out:
         while (qx--)
@@ -925,7 +915,7 @@ fail:
 int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        struct gfs2_alloc *al = ip->i_alloc;
+        struct gfs2_qadata *qa = ip->i_qadata;
         struct gfs2_quota_data *qd;
         unsigned int x;
         int error = 0;
@@ -938,15 +928,15 @@ int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
             sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
                 return 0;
 
-        sort(al->al_qd, al->al_qd_num, sizeof(struct gfs2_quota_data *),
+        sort(qa->qa_qd, qa->qa_qd_num, sizeof(struct gfs2_quota_data *),
              sort_qd, NULL);
 
-        for (x = 0; x < al->al_qd_num; x++) {
+        for (x = 0; x < qa->qa_qd_num; x++) {
                 int force = NO_FORCE;
-                qd = al->al_qd[x];
+                qd = qa->qa_qd[x];
                 if (test_and_clear_bit(QDF_REFRESH, &qd->qd_flags))
                         force = FORCE;
-                error = do_glock(qd, force, &al->al_qd_ghs[x]);
+                error = do_glock(qd, force, &qa->qa_qd_ghs[x]);
                 if (error)
                         break;
         }
@@ -955,7 +945,7 @@ int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
                 set_bit(GIF_QD_LOCKED, &ip->i_flags);
         else {
                 while (x--)
-                        gfs2_glock_dq_uninit(&al->al_qd_ghs[x]);
+                        gfs2_glock_dq_uninit(&qa->qa_qd_ghs[x]);
                 gfs2_quota_unhold(ip);
         }
 
@@ -1000,7 +990,7 @@ static int need_sync(struct gfs2_quota_data *qd)
 
 void gfs2_quota_unlock(struct gfs2_inode *ip)
 {
-        struct gfs2_alloc *al = ip->i_alloc;
+        struct gfs2_qadata *qa = ip->i_qadata;
         struct gfs2_quota_data *qda[4];
         unsigned int count = 0;
         unsigned int x;
@@ -1008,14 +998,14 @@ void gfs2_quota_unlock(struct gfs2_inode *ip)
         if (!test_and_clear_bit(GIF_QD_LOCKED, &ip->i_flags))
                 goto out;
 
-        for (x = 0; x < al->al_qd_num; x++) {
+        for (x = 0; x < qa->qa_qd_num; x++) {
                 struct gfs2_quota_data *qd;
                 int sync;
 
-                qd = al->al_qd[x];
+                qd = qa->qa_qd[x];
                 sync = need_sync(qd);
 
-                gfs2_glock_dq_uninit(&al->al_qd_ghs[x]);
+                gfs2_glock_dq_uninit(&qa->qa_qd_ghs[x]);
 
                 if (sync && qd_trylock(qd))
                         qda[count++] = qd;
@@ -1048,7 +1038,7 @@ static int print_message(struct gfs2_quota_data *qd, char *type)
 int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        struct gfs2_alloc *al = ip->i_alloc;
+        struct gfs2_qadata *qa = ip->i_qadata;
         struct gfs2_quota_data *qd;
         s64 value;
         unsigned int x;
@@ -1060,8 +1050,8 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
         if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
                 return 0;
 
-        for (x = 0; x < al->al_qd_num; x++) {
-                qd = al->al_qd[x];
+        for (x = 0; x < qa->qa_qd_num; x++) {
+                qd = qa->qa_qd[x];
 
                 if (!((qd->qd_id == uid && test_bit(QDF_USER, &qd->qd_flags)) ||
                       (qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))))
@@ -1099,7 +1089,7 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
 void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
                        u32 uid, u32 gid)
 {
-        struct gfs2_alloc *al = ip->i_alloc;
+        struct gfs2_qadata *qa = ip->i_qadata;
         struct gfs2_quota_data *qd;
         unsigned int x;
 
@@ -1108,8 +1098,8 @@ void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
         if (ip->i_diskflags & GFS2_DIF_SYSTEM)
                 return;
 
-        for (x = 0; x < al->al_qd_num; x++) {
-                qd = al->al_qd[x];
+        for (x = 0; x < qa->qa_qd_num; x++) {
+                qd = qa->qa_qd[x];
 
                 if ((qd->qd_id == uid && test_bit(QDF_USER, &qd->qd_flags)) ||
                     (qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))) {
@@ -1529,7 +1519,6 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
         unsigned int data_blocks, ind_blocks;
         unsigned int blocks = 0;
         int alloc_required;
-        struct gfs2_alloc *al;
         loff_t offset;
         int error;
 
@@ -1594,15 +1583,12 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
         if (gfs2_is_stuffed(ip))
                 alloc_required = 1;
         if (alloc_required) {
-                al = gfs2_alloc_get(ip);
-                if (al == NULL)
-                        goto out_i;
                 gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota),
                                        &data_blocks, &ind_blocks);
-                blocks = al->al_requested = 1 + data_blocks + ind_blocks;
-                error = gfs2_inplace_reserve(ip);
+                blocks = 1 + data_blocks + ind_blocks;
+                error = gfs2_inplace_reserve(ip, blocks);
                 if (error)
-                        goto out_alloc;
+                        goto out_i;
                 blocks += gfs2_rg_blocks(ip);
         }
 
@@ -1617,11 +1603,8 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
 
         gfs2_trans_end(sdp);
 out_release:
-        if (alloc_required) {
+        if (alloc_required)
                 gfs2_inplace_release(ip);
-out_alloc:
-                gfs2_alloc_put(ip);
-        }
 out_i:
         gfs2_glock_dq_uninit(&i_gh);
 out_q:
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 6b6cc096756a..f6e05d63e8ab 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -860,22 +860,36 @@ fail:
 }
 
 /**
- * gfs2_alloc_get - get the struct gfs2_alloc structure for an inode
+ * gfs2_qadata_get - get the struct gfs2_qadata structure for an inode
  * @ip: the incore GFS2 inode structure
  *
- * Returns: the struct gfs2_alloc
+ * Returns: the struct gfs2_qadata
  */
 
-struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip)
+struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
         int error;
-        BUG_ON(ip->i_alloc != NULL);
-        ip->i_alloc = kzalloc(sizeof(struct gfs2_alloc), GFP_NOFS);
+        BUG_ON(ip->i_qadata != NULL);
+        ip->i_qadata = kzalloc(sizeof(struct gfs2_qadata), GFP_NOFS);
         error = gfs2_rindex_update(sdp);
         if (error)
                 fs_warn(sdp, "rindex update returns %d\n", error);
-        return ip->i_alloc;
+        return ip->i_qadata;
+}
+
+/**
+ * gfs2_blkrsv_get - get the struct gfs2_blkreserv structure for an inode
+ * @ip: the incore GFS2 inode structure
+ *
+ * Returns: the struct gfs2_qadata
+ */
+
+static struct gfs2_blkreserv *gfs2_blkrsv_get(struct gfs2_inode *ip)
+{
+        BUG_ON(ip->i_res != NULL);
+        ip->i_res = kzalloc(sizeof(struct gfs2_blkreserv), GFP_NOFS);
+        return ip->i_res;
 }
 
 /**
@@ -890,11 +904,11 @@ struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip)
 
 static int try_rgrp_fit(const struct gfs2_rgrpd *rgd, const struct gfs2_inode *ip)
 {
-        const struct gfs2_alloc *al = ip->i_alloc;
+        const struct gfs2_blkreserv *rs = ip->i_res;
 
         if (rgd->rd_flags & (GFS2_RGF_NOALLOC | GFS2_RDF_ERROR))
                 return 0;
-        if (rgd->rd_free_clone >= al->al_requested)
+        if (rgd->rd_free_clone >= rs->rs_requested)
                 return 1;
         return 0;
 }
@@ -982,7 +996,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
         struct gfs2_rgrpd *rgd, *begin = NULL;
-        struct gfs2_alloc *al = ip->i_alloc;
+        struct gfs2_blkreserv *rs = ip->i_res;
         int error, rg_locked, flags = LM_FLAG_TRY;
         int loops = 0;
 
@@ -1002,7 +1016,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
                         error = 0;
                 } else {
                         error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE,
-                                                   flags, &al->al_rgd_gh);
+                                                   flags, &rs->rs_rgd_gh);
                 }
                 switch (error) {
                 case 0:
@@ -1013,7 +1027,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
                         if (rgd->rd_flags & GFS2_RDF_CHECK)
                                 try_rgrp_unlink(rgd, last_unlinked, ip->i_no_addr);
                         if (!rg_locked)
-                                gfs2_glock_dq_uninit(&al->al_rgd_gh);
+                                gfs2_glock_dq_uninit(&rs->rs_rgd_gh);
                         /* fall through */
                 case GLR_TRYFAILED:
                         rgd = gfs2_rgrpd_get_next(rgd);
@@ -1030,6 +1044,13 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
         return -ENOSPC;
 }
 
+static void gfs2_blkrsv_put(struct gfs2_inode *ip)
+{
+        BUG_ON(ip->i_res == NULL);
+        kfree(ip->i_res);
+        ip->i_res = NULL;
+}
+
 /**
  * gfs2_inplace_reserve - Reserve space in the filesystem
  * @ip: the inode to reserve space for
@@ -1037,16 +1058,23 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
  * Returns: errno
  */
 
-int gfs2_inplace_reserve(struct gfs2_inode *ip)
+int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        struct gfs2_alloc *al = ip->i_alloc;
+        struct gfs2_blkreserv *rs;
         int error = 0;
         u64 last_unlinked = NO_BLOCK;
         int tries = 0;
 
-        if (gfs2_assert_warn(sdp, al->al_requested))
-                return -EINVAL;
+        rs = gfs2_blkrsv_get(ip);
+        if (!rs)
+                return -ENOMEM;
+
+        rs->rs_requested = requested;
+        if (gfs2_assert_warn(sdp, requested)) {
+                error = -EINVAL;
+                goto out;
+        }
 
         do {
                 error = get_local_rgrp(ip, &last_unlinked);
@@ -1063,6 +1091,9 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip)
                 gfs2_log_flush(sdp, NULL);
         } while (tries++ < 3);
 
+out:
+        if (error)
+                gfs2_blkrsv_put(ip);
         return error;
 }
 
@@ -1075,10 +1106,11 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip)
 
 void gfs2_inplace_release(struct gfs2_inode *ip)
 {
-        struct gfs2_alloc *al = ip->i_alloc;
+        struct gfs2_blkreserv *rs = ip->i_res;
 
-        if (al->al_rgd_gh.gh_gl)
-                gfs2_glock_dq_uninit(&al->al_rgd_gh);
+        gfs2_blkrsv_put(ip);
+        if (rs->rs_rgd_gh.gh_gl)
+                gfs2_glock_dq_uninit(&rs->rs_rgd_gh);
 }
 
 /**
@@ -1338,7 +1370,6 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *ndata,
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
         struct buffer_head *dibh;
-        struct gfs2_alloc *al = ip->i_alloc;
         struct gfs2_rgrpd *rgd;
         u32 goal, extlen, blk; /* block, within the rgrp scope */
         u64 block; /* block, within the file system scope */
@@ -1348,7 +1379,7 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *ndata,
         /* Only happens if there is a bug in gfs2, return something distinctive
          * to ensure that it is noticed.
          */
-        if (al == NULL)
+        if (ip->i_res == NULL)
                 return -ECANCELED;
 
         rgd = ip->i_rgd;
diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h
index b3b61b8f6d8f..ceec9106cdf4 100644
--- a/fs/gfs2/rgrp.h
+++ b/fs/gfs2/rgrp.h
@@ -28,15 +28,15 @@ extern void gfs2_free_clones(struct gfs2_rgrpd *rgd);
 extern int gfs2_rgrp_go_lock(struct gfs2_holder *gh);
 extern void gfs2_rgrp_go_unlock(struct gfs2_holder *gh);
 
-extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip);
-static inline void gfs2_alloc_put(struct gfs2_inode *ip)
+extern struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip);
+static inline void gfs2_qadata_put(struct gfs2_inode *ip)
 {
-        BUG_ON(ip->i_alloc == NULL);
-        kfree(ip->i_alloc);
-        ip->i_alloc = NULL;
+        BUG_ON(ip->i_qadata == NULL);
+        kfree(ip->i_qadata);
+        ip->i_qadata = NULL;
 }
 
-extern int gfs2_inplace_reserve(struct gfs2_inode *ip);
+extern int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested);
 extern void gfs2_inplace_release(struct gfs2_inode *ip);
 
 extern int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n,
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 71e420989f77..69eb56876db4 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -1399,8 +1399,9 @@ static void gfs2_final_release_pages(struct gfs2_inode *ip)
 static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        struct gfs2_alloc *al;
+        struct gfs2_qadata *qa;
         struct gfs2_rgrpd *rgd;
+        struct gfs2_holder gh;
         int error;
 
         if (gfs2_get_inode_blocks(&ip->i_inode) != 1) {
@@ -1408,8 +1409,8 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
                 return -EIO;
         }
 
-        al = gfs2_alloc_get(ip);
-        if (!al)
+        qa = gfs2_qadata_get(ip);
+        if (!qa)
                 return -ENOMEM;
 
         error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@@ -1423,8 +1424,7 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
                 goto out_qs;
         }
 
-        error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
-                                   &al->al_rgd_gh);
+        error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh);
         if (error)
                 goto out_qs;
 
@@ -1440,11 +1440,11 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
         gfs2_trans_end(sdp);
 
 out_rg_gunlock:
-        gfs2_glock_dq_uninit(&al->al_rgd_gh);
+        gfs2_glock_dq_uninit(&gh);
 out_qs:
         gfs2_quota_unhold(ip);
 out:
-        gfs2_alloc_put(ip);
+        gfs2_qadata_put(ip);
         return error;
 }
 
diff --git a/fs/gfs2/trans.h b/fs/gfs2/trans.h
index f8f101ef600c..125d4572e1c0 100644
--- a/fs/gfs2/trans.h
+++ b/fs/gfs2/trans.h
@@ -30,9 +30,9 @@ struct gfs2_glock;
  * block, or all of the blocks in the rg, whichever is smaller */
 static inline unsigned int gfs2_rg_blocks(const struct gfs2_inode *ip)
 {
-        const struct gfs2_alloc *al = ip->i_alloc;
-        if (al->al_requested < ip->i_rgd->rd_length)
-                return al->al_requested + 1;
+        const struct gfs2_blkreserv *rs = ip->i_res;
+        if (rs->rs_requested < ip->i_rgd->rd_length)
+                return rs->rs_requested + 1;
         return ip->i_rgd->rd_length;
 }
 
diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c
index ef74e1591b89..e9636591b5d5 100644
--- a/fs/gfs2/xattr.c
+++ b/fs/gfs2/xattr.c
@@ -321,11 +321,11 @@ static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
                                struct gfs2_ea_header *ea,
                                struct gfs2_ea_header *prev, int leave)
 {
-        struct gfs2_alloc *al;
+        struct gfs2_qadata *qa;
         int error;
 
-        al = gfs2_alloc_get(ip);
-        if (!al)
+        qa = gfs2_qadata_get(ip);
+        if (!qa)
                 return -ENOMEM;
 
         error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@@ -336,7 +336,7 @@ static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
 
         gfs2_quota_unhold(ip);
 out_alloc:
-        gfs2_alloc_put(ip);
+        gfs2_qadata_put(ip);
         return error;
 }
 
@@ -709,21 +709,19 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er,
                              unsigned int blks,
                              ea_skeleton_call_t skeleton_call, void *private)
 {
-        struct gfs2_alloc *al;
+        struct gfs2_qadata *qa;
         struct buffer_head *dibh;
         int error;
 
-        al = gfs2_alloc_get(ip);
-        if (!al)
+        qa = gfs2_qadata_get(ip);
+        if (!qa)
                 return -ENOMEM;
 
         error = gfs2_quota_lock_check(ip);
         if (error)
                 goto out;
 
-        al->al_requested = blks;
-
-        error = gfs2_inplace_reserve(ip);
+        error = gfs2_inplace_reserve(ip, blks);
         if (error)
                 goto out_gunlock_q;
 
@@ -752,7 +750,7 @@ out_ipres:
 out_gunlock_q:
         gfs2_quota_unlock(ip);
 out:
-        gfs2_alloc_put(ip);
+        gfs2_qadata_put(ip);
         return error;
 }
 
@@ -1436,9 +1434,9 @@ out:
 static int ea_dealloc_block(struct gfs2_inode *ip)
 {
         struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
-        struct gfs2_alloc *al = ip->i_alloc;
         struct gfs2_rgrpd *rgd;
         struct buffer_head *dibh;
+        struct gfs2_holder gh;
         int error;
 
         rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr);
@@ -1447,8 +1445,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
                 return -EIO;
         }
 
-        error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
-                                   &al->al_rgd_gh);
+        error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh);
         if (error)
                 return error;
 
@@ -1472,7 +1469,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
         gfs2_trans_end(sdp);
 
 out_gunlock:
-        gfs2_glock_dq_uninit(&al->al_rgd_gh);
+        gfs2_glock_dq_uninit(&gh);
         return error;
 }
 
@@ -1485,11 +1482,11 @@ out_gunlock:
 
 int gfs2_ea_dealloc(struct gfs2_inode *ip)
 {
-        struct gfs2_alloc *al;
+        struct gfs2_qadata *qa;
         int error;
 
-        al = gfs2_alloc_get(ip);
-        if (!al)
+        qa = gfs2_qadata_get(ip);
+        if (!qa)
                 return -ENOMEM;
 
         error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@@ -1511,7 +1508,7 @@ int gfs2_ea_dealloc(struct gfs2_inode *ip)
 out_quota:
         gfs2_quota_unhold(ip);
 out_alloc:
-        gfs2_alloc_put(ip);
+        gfs2_qadata_put(ip);
         return error;
 }