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authorBob Peterson <rpeterso@redhat.com>2012-07-19 08:12:40 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2012-07-19 14:51:08 +0100
commit8e2e00473598dd5379d8408cb974dade000acafc (patch)
tree1f7bfdf0d07b6c0315bbd11ffee174742d66a459 /fs/gfs2/xattr.c
parent294f2ad5a545eb71d397623743ddd8201131bdad (diff)
downloadlinux-8e2e00473598dd5379d8408cb974dade000acafc.tar.bz2
GFS2: Reduce file fragmentation
This patch reduces GFS2 file fragmentation by pre-reserving blocks. The resulting improved on disk layout greatly speeds up operations in cases which would have resulted in interlaced allocation of blocks previously. A typical example of this is 10 parallel dd processes, each writing to a file in a common dirctory. The implementation uses an rbtree of reservations attached to each resource group (and each inode). Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/xattr.c')
-rw-r--r--fs/gfs2/xattr.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c
index 523c0de0d805..27a0b4a901f5 100644
--- a/fs/gfs2/xattr.c
+++ b/fs/gfs2/xattr.c
@@ -327,6 +327,10 @@ static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
{
int error;
+ error = gfs2_rindex_update(GFS2_SB(&ip->i_inode));
+ if (error)
+ return error;
+
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
if (error)
goto out_alloc;
@@ -710,6 +714,10 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er,
struct buffer_head *dibh;
int error;
+ error = gfs2_rindex_update(GFS2_SB(&ip->i_inode));
+ if (error)
+ return error;
+
error = gfs2_quota_lock_check(ip);
if (error)
return error;
@@ -1483,6 +1491,10 @@ int gfs2_ea_dealloc(struct gfs2_inode *ip)
{
int error;
+ error = gfs2_rindex_update(GFS2_SB(&ip->i_inode));
+ if (error)
+ return error;
+
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
if (error)
return error;