diff options
| author | Christoph Hellwig <hch@infradead.org> | 2012-04-23 15:58:37 +1000 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2012-05-14 16:20:29 -0500 |
| commit | fe7257fd4b8ae9a3e354d9edb61890973e373ef0 (patch) | |
| tree | 471b9ecc1cb21207cb95291d1ec5b81c393b060f /fs/xfs/xfs_dquot_item.c | |
| parent | 4c46819a8097a75d3b378c5e56d2bcf47bb7408d (diff) | |
| download | linux-fe7257fd4b8ae9a3e354d9edb61890973e373ef0.tar.bz2 | |
xfs: do not write the buffer from xfs_qm_dqflush
Instead of writing the buffer directly from inside xfs_qm_dqflush return it
to the caller and let the caller decide what to do with the buffer. Also
remove the pincount check in xfs_qm_dqflush that all non-blocking callers
already implement and the now unused flags parameter and the XFS_DQ_IS_DIRTY
check that all callers already perform.
[ Dave Chinner: fixed build error cause by missing '{'. ]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_dquot_item.c')
| -rw-r--r-- | fs/xfs/xfs_dquot_item.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/fs/xfs/xfs_dquot_item.c b/fs/xfs/xfs_dquot_item.c index 34baeae45265..8d8295814272 100644 --- a/fs/xfs/xfs_dquot_item.c +++ b/fs/xfs/xfs_dquot_item.c @@ -119,10 +119,12 @@ xfs_qm_dquot_logitem_push( struct xfs_log_item *lip) { struct xfs_dquot *dqp = DQUOT_ITEM(lip)->qli_dquot; + struct xfs_buf *bp = NULL; int error; ASSERT(XFS_DQ_IS_LOCKED(dqp)); ASSERT(!completion_done(&dqp->q_flush)); + ASSERT(atomic_read(&dqp->q_pincount) == 0); /* * Since we were able to lock the dquot's flush lock and @@ -133,10 +135,16 @@ xfs_qm_dquot_logitem_push( * lock without sleeping, then there must not have been * anyone in the process of flushing the dquot. */ - error = xfs_qm_dqflush(dqp, SYNC_TRYLOCK); - if (error) + error = xfs_qm_dqflush(dqp, &bp); + if (error) { xfs_warn(dqp->q_mount, "%s: push error %d on dqp %p", __func__, error, dqp); + goto out_unlock; + } + + xfs_buf_delwri_queue(bp); + xfs_buf_relse(bp); +out_unlock: xfs_dqunlock(dqp); } @@ -239,6 +247,15 @@ xfs_qm_dquot_logitem_trylock( if (!xfs_dqlock_nowait(dqp)) return XFS_ITEM_LOCKED; + /* + * Re-check the pincount now that we stabilized the value by + * taking the quota lock. + */ + if (atomic_read(&dqp->q_pincount) > 0) { + xfs_dqunlock(dqp); + return XFS_ITEM_PINNED; + } + if (!xfs_dqflock_nowait(dqp)) { /* * dquot has already been flushed to the backing buffer, |