tree bb5ca49fd1dc92051e9898a653d7bdd26c93af59
parent 80a376bfb7f8ff8f1942cb1bdd0052e908918252
author Christoph Hellwig <hch@infradead.org> 1323208697 +0000
committer Ben Myers <bpm@sgi.com> 1323816388 -0600

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>