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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_dquot.h
parent80a376bfb7f8ff8f1942cb1bdd0052e908918252 (diff)
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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_dquot.h')
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