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authorChristoph Hellwig <hch@infradead.org>2011-12-06 21:58:17 +0000
committerBen Myers <bpm@sgi.com>2011-12-13 16:46:28 -0600
commitbe7ffc38a80a78e6b68d0f51fae8e8d57b55324c (patch)
treebb5ca49fd1dc92051e9898a653d7bdd26c93af59 /fs/xfs/xfs_quota.h
parent80a376bfb7f8ff8f1942cb1bdd0052e908918252 (diff)
xfs: implement lazy removal for the dquot freelist
Do not remove dquots from the freelist when we grab a reference to them in xfs_qm_dqlookup, but leave them on the freelist util scanning notices that they have a reference. This speeds up the lookup fastpath, and greatly simplifies the lock ordering constraints. Note that the same scheme is used by the VFS inode and dentry caches. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_quota.h')
-rw-r--r--fs/xfs/xfs_quota.h4
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h
index cbafdee8b98..487653ddbef 100644
--- a/fs/xfs/xfs_quota.h
+++ b/fs/xfs/xfs_quota.h
@@ -87,7 +87,6 @@ typedef struct xfs_dqblk {
#define XFS_DQ_PROJ 0x0002 /* project quota */
#define XFS_DQ_GROUP 0x0004 /* a group quota */
#define XFS_DQ_DIRTY 0x0008 /* dquot is dirty */
-#define XFS_DQ_WANT 0x0010 /* for lookup/reclaim race */
#define XFS_DQ_ALLTYPES (XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP)
@@ -95,8 +94,7 @@ typedef struct xfs_dqblk {
{ XFS_DQ_USER, "USER" }, \
{ XFS_DQ_PROJ, "PROJ" }, \
{ XFS_DQ_GROUP, "GROUP" }, \
- { XFS_DQ_DIRTY, "DIRTY" }, \
- { XFS_DQ_WANT, "WANT" }
+ { XFS_DQ_DIRTY, "DIRTY" }
/*
* In the worst case, when both user and group quotas are on,