ocfs2: Avoid unnecessary block mapping when refreshing quota info
The position of global quota file info does not change. So we do not have
to do logical -> physical block translation every time we reread it from
disk. Thus we can also avoid taking ip_alloc_sem.
Acked-by: Joel Becker <Joel.Becker@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/ocfs2/quota.h b/fs/ocfs2/quota.h
index e22d293..c762343 100644
--- a/fs/ocfs2/quota.h
+++ b/fs/ocfs2/quota.h
@@ -52,8 +52,9 @@
struct ocfs2_lock_res dqi_gqlock; /* Lock protecting quota information structure */
struct buffer_head *dqi_gqi_bh; /* Buffer head with global quota file inode - set only if inode lock is obtained */
int dqi_gqi_count; /* Number of holders of dqi_gqi_bh */
+ u64 dqi_giblk; /* Number of block with global information header */
struct buffer_head *dqi_lqi_bh; /* Buffer head with local quota file inode */
- struct buffer_head *dqi_ibh; /* Buffer with information header */
+ struct buffer_head *dqi_libh; /* Buffer with local information header */
struct qtree_mem_dqinfo dqi_gi; /* Info about global file */
struct delayed_work dqi_sync_work; /* Work for syncing dquots */
struct ocfs2_quota_recovery *dqi_rec; /* Pointer to recovery