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| author | Christoph Hellwig <hch@infradead.org> | 2011-12-06 21:58:18 +0000 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2011-12-14 16:32:21 -0600 |
| commit | 92678554abfc2a2f2727ad168da87d8d434ac904 (patch) | |
| tree | 082b395f587dca7903c083e8e10529be1890dc4e /fs/xfs/xfs_quota.h | |
| parent | be7ffc38a80a78e6b68d0f51fae8e8d57b55324c (diff) | |
| download | blackbird-op-linux-92678554abfc2a2f2727ad168da87d8d434ac904.tar.gz blackbird-op-linux-92678554abfc2a2f2727ad168da87d8d434ac904.zip | |
xfs: flatten the dquot lock ordering
Introduce a new XFS_DQ_FREEING flag that tells lookup and mplist walks
to skip a dquot that is beeing freed, and use this avoid the trylock
on the hash and mplist locks in xfs_qm_dqreclaim_one. Also simplify
xfs_dqpurge by moving the inodes to a dispose list after marking them
XFS_DQ_FREEING and avoid the locker ordering constraints.
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.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h index 487653ddbef0..b86c62f5eeba 100644 --- a/fs/xfs/xfs_quota.h +++ b/fs/xfs/xfs_quota.h @@ -87,6 +87,7 @@ 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_FREEING 0x0010 /* dquot is beeing torn down */ #define XFS_DQ_ALLTYPES (XFS_DQ_USER|XFS_DQ_PROJ|XFS_DQ_GROUP) @@ -94,7 +95,8 @@ typedef struct xfs_dqblk { { XFS_DQ_USER, "USER" }, \ { XFS_DQ_PROJ, "PROJ" }, \ { XFS_DQ_GROUP, "GROUP" }, \ - { XFS_DQ_DIRTY, "DIRTY" } + { XFS_DQ_DIRTY, "DIRTY" }, \ + { XFS_DQ_FREEING, "FREEING" } /* * In the worst case, when both user and group quotas are on, |
