[GFS2] Reduce inode size by merging fields

There were three fields being used to keep track of the location
of the most recently allocated block for each inode. These have
been merged into a single field in order to better keep the
data and metadata for an inode close on disk, and also to reduce
the space required for storage.

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

1 files changed, 5 insertions, 8 deletions

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 65fdfee9ca9b..c3fe8aa03c4e 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -282,8 +282,7 @@ 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);
@@ -1404,8 +1403,8 @@ void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf)
         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);
@@ -1433,10 +1432,8 @@ void gfs2_dinode_print(const struct gfs2_inode *ip)
         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 "  i_goal = %llu\n",
+               (unsigned long long)ip->i_goal);
         printk(KERN_INFO "  di_flags = 0x%.8X\n", di->di_flags);
         printk(KERN_INFO "  i_height = %u\n", ip->i_height);
         printk(KERN_INFO "  i_depth = %u\n", ip->i_depth);