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xfs: use per-filesystem radix trees for dquot lookup

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Replace the global hash tables for looking up in-memory dquot structures
with per-filesystem radix trees to allow scaling to a large number of
in-memory dquot structures.

Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Christoph Hellwig
2012-03-13 08:52:35 +00:00
committed by Ben Myers
parent f8739c3ce2
commit 9f920f1164
6 changed files with 68 additions and 265 deletions
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11
fs/xfs/xfs_quota_priv.h
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@@ -24,17 +24,6 @@
*/
#define XFS_DQITER_MAP_SIZE 10
/*
* Hash into a bucket in the dquot hash table, based on <mp, id>.
*/
#define XFS_DQ_HASHVAL(mp, id) (((__psunsigned_t)(mp) + \
(__psunsigned_t)(id)) & \
(xfs_Gqm->qm_dqhashmask - 1))
#define XFS_DQ_HASH(mp, id, type) (type == XFS_DQ_USER ? \
(xfs_Gqm->qm_usr_dqhtable + \
XFS_DQ_HASHVAL(mp, id)) : \
(xfs_Gqm->qm_grp_dqhtable + \
XFS_DQ_HASHVAL(mp, id)))
#define XFS_IS_DQUOT_UNINITIALIZED(dqp) ( \
!dqp->q_core.d_blk_hardlimit && \
!dqp->q_core.d_blk_softlimit && \