xfs: kill xfs_qmops

Kill the quota ops function vector and replace it with direct calls or
stubs in the CONFIG_XFS_QUOTA=n case.

Make sure we check XFS_IS_QUOTA_RUNNING in the right spots.  We can remove
the number of those checks because the XFS_TRANS_DQ_DIRTY flag can't be set
otherwise.

This brings us back closer to the way this code worked in IRIX and earlier
Linux versions, but we keep a lot of the more useful factoring of common
code.

Eventually we should also kill xfs_qm_bhv.c, but that's left for a later
patch.

Reduces the size of the source code by about 250 lines and the size of
XFS module by about 1.5 kilobytes with quotas enabled:

   text	   data	    bss	    dec	    hex	filename
 615957	   2960	   3848	 622765	  980ad	fs/xfs/xfs.o
 617231	   3152	   3848	 624231	  98667	fs/xfs/xfs.o.old

Fallout:

 - xfs_qm_dqattach is split into xfs_qm_dqattach_locked which expects
   the inode locked and xfs_qm_dqattach which does the locking around it,
   thus removing XFS_QMOPT_ILOCKED.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>

1 files changed, 0 insertions, 1 deletions

diff --git a/fs/xfs/quota/xfs_dquot.h b/fs/xfs/quota/xfs_dquot.h
index de0f402ddb4c..6533ead9b889 100644
--- a/fs/xfs/quota/xfs_dquot.h
+++ b/fs/xfs/quota/xfs_dquot.h
@@ -181,7 +181,6 @@ extern void		xfs_qm_adjust_dqlimits(xfs_mount_t *,
 extern int              xfs_qm_dqget(xfs_mount_t *, xfs_inode_t *,
                                         xfs_dqid_t, uint, uint, xfs_dquot_t **);
 extern void             xfs_qm_dqput(xfs_dquot_t *);
-extern void             xfs_qm_dqrele(xfs_dquot_t *);
 extern void             xfs_dqlock(xfs_dquot_t *);
 extern void             xfs_dqlock2(xfs_dquot_t *, xfs_dquot_t *);
 extern void             xfs_dqunlock(xfs_dquot_t *);