[GFS2] Remove gfs2_inode_attr_in

This function wasn't really doing the right thing. There was no need
to update the inode size at this point and the updating of the
i_blocks field has now been moved to the places where di_blocks is
updated. A result of this patch and some those preceeding it is that
unlocking a glock is now a much more efficient process, since there
is no longer any requirement to copy data from the gfs2 inode into
the vfs inode at this point.

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

6 files changed, 26 insertions, 24 deletions

diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 692d4a3da1bc..06e3447ea132 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -163,6 +163,7 @@ 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);
         }
 
@@ -272,6 +273,7 @@ static int build_height(struct inode *inode, unsigned height)
         *(__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);
@@ -415,6 +417,7 @@ static int lookup_block(struct gfs2_inode *ip, struct buffer_head *bh,
 
         *ptr = cpu_to_be64(*block);
         ip->i_di.di_blocks++;
+        gfs2_set_inode_blocks(&ip->i_inode);
 
         *new = 1;
         return 0;
@@ -770,6 +773,7 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh,
                 if (!ip->i_di.di_blocks)
                         gfs2_consist_inode(ip);
                 ip->i_di.di_blocks--;
+                gfs2_set_inode_blocks(&ip->i_inode);
         }
         if (bstart) {
                 if (metadata)
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index c82d7cb4a654..a2923fb91bba 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -901,6 +901,7 @@ static int dir_make_exhash(struct inode *inode)
 
         dip->i_di.di_size = sdp->sd_sb.sb_bsize / 2;
         dip->i_di.di_blocks++;
+        gfs2_set_inode_blocks(&dip->i_inode);
         dip->i_di.di_flags |= GFS2_DIF_EXHASH;
 
         for (x = sdp->sd_hash_ptrs, y = -1; x; x >>= 1, y++) ;
@@ -1038,6 +1039,7 @@ 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)) {
                 dip->i_di.di_blocks++;
+                gfs2_set_inode_blocks(&dip->i_inode);
                 gfs2_dinode_out(dip, dibh->b_data);
                 brelse(dibh);
         }
@@ -1516,6 +1518,7 @@ static int dir_new_leaf(struct inode *inode, const struct qstr *name)
                 return error;
         gfs2_trans_add_bh(ip->i_gl, bh, 1);
         ip->i_di.di_blocks++;
+        gfs2_set_inode_blocks(&ip->i_inode);
         gfs2_dinode_out(ip, bh->b_data);
         brelse(bh);
         return 0;
@@ -1860,6 +1863,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
                 if (!dip->i_di.di_blocks)
                         gfs2_consist_inode(dip);
                 dip->i_di.di_blocks--;
+                gfs2_set_inode_blocks(&dip->i_inode);
         }
 
         error = gfs2_dir_write_data(dip, ht, index * sizeof(u64), size);
diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c
index 7dde84775ba7..ebebbdcd7057 100644
--- a/fs/gfs2/eattr.c
+++ b/fs/gfs2/eattr.c
@@ -281,6 +281,7 @@ static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
                 if (!ip->i_di.di_blocks)
                         gfs2_consist_inode(ip);
                 ip->i_di.di_blocks--;
+                gfs2_set_inode_blocks(&ip->i_inode);
         }
         if (bstart)
                 gfs2_free_meta(ip, bstart, blen);
@@ -598,6 +599,7 @@ static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp)
         ea->ea_num_ptrs = 0;
 
         ip->i_di.di_blocks++;
+        gfs2_set_inode_blocks(&ip->i_inode);
 
         return 0;
 }
@@ -649,6 +651,7 @@ static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea,
                         gfs2_metatype_set(bh, GFS2_METATYPE_ED, GFS2_FORMAT_ED);
 
                         ip->i_di.di_blocks++;
+                        gfs2_set_inode_blocks(&ip->i_inode);
 
                         copy = data_len > sdp->sd_jbsize ? sdp->sd_jbsize :
                                                            data_len;
@@ -977,6 +980,7 @@ static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er,
                 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);
 
                 eablk++;
         }
@@ -1387,6 +1391,7 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip)
                 if (!ip->i_di.di_blocks)
                         gfs2_consist_inode(ip);
                 ip->i_di.di_blocks--;
+                gfs2_set_inode_blocks(&ip->i_inode);
         }
         if (bstart)
                 gfs2_free_meta(ip, bstart, blen);
@@ -1441,6 +1446,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
         if (!ip->i_di.di_blocks)
                 gfs2_consist_inode(ip);
         ip->i_di.di_blocks--;
+        gfs2_set_inode_blocks(&ip->i_inode);
 
         error = gfs2_meta_inode_buffer(ip, &dibh);
         if (!error) {
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 9c2033714b08..b92de0af0bf3 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -356,7 +356,6 @@ static int inode_go_lock(struct gfs2_holder *gh)
                 error = gfs2_inode_refresh(ip);
                 if (error)
                         return error;
-                gfs2_inode_attr_in(ip);
         }
 
         if ((ip->i_di.di_flags & GFS2_DIF_TRUNC_IN_PROG) &&
@@ -380,11 +379,8 @@ static void inode_go_unlock(struct gfs2_holder *gh)
         struct gfs2_glock *gl = gh->gh_gl;
         struct gfs2_inode *ip = gl->gl_object;
 
-        if (ip == NULL)
-                return;
-        if (test_bit(GLF_DIRTY, &gl->gl_flags))
-                gfs2_inode_attr_in(ip);
-        gfs2_meta_cache_flush(ip);
+        if (ip)
+                gfs2_meta_cache_flush(ip);
 }
 
 /**
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 19b2736cd52f..ea9ca239c878 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -38,29 +38,12 @@
 #include "trans.h"
 #include "util.h"
 
-/**
- * gfs2_inode_attr_in - Copy attributes from the dinode into the VFS inode
- * @ip: The GFS2 inode (with embedded disk inode data)
- * @inode:  The Linux VFS inode
- *
- */
-
-void gfs2_inode_attr_in(struct gfs2_inode *ip)
-{
-        struct inode *inode = &ip->i_inode;
-        struct gfs2_dinode_host *di = &ip->i_di;
-
-        i_size_write(inode, di->di_size);
-        inode->i_blocks = di->di_blocks <<
-                (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
-}
-
 static int iget_test(struct inode *inode, void *opaque)
 {
         struct gfs2_inode *ip = GFS2_I(inode);
         struct gfs2_inum_host *inum = opaque;
 
-        if (ip && ip->i_num.no_addr == inum->no_addr)
+        if (ip->i_num.no_addr == inum->no_addr)
                 return 1;
 
         return 0;
@@ -187,7 +170,9 @@ 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);
         ip->i_inode.i_atime.tv_sec = be64_to_cpu(str->di_atime);
         ip->i_inode.i_atime.tv_nsec = 0;
         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
index 54d584eddf29..46917edfdd6c 100644
--- a/fs/gfs2/inode.h
+++ b/fs/gfs2/inode.h
@@ -25,6 +25,13 @@ static inline int gfs2_is_dir(struct gfs2_inode *ip)
         return S_ISDIR(ip->i_inode.i_mode);
 }
 
+static inline void gfs2_set_inode_blocks(struct inode *inode)
+{
+        struct gfs2_inode *ip = GFS2_I(inode);
+        inode->i_blocks = ip->i_di.di_blocks <<
+                (GFS2_SB(inode)->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT);
+}
+
 void gfs2_inode_attr_in(struct gfs2_inode *ip);
 struct inode *gfs2_inode_lookup(struct super_block *sb, struct gfs2_inum_host *inum, unsigned type);
 struct inode *gfs2_ilookup(struct super_block *sb, struct gfs2_inum_host *inum);