diff options
| -rw-r--r-- | fs/xfs/xfs_dquot.c | 43 | ||||
| -rw-r--r-- | fs/xfs/xfs_dquot.h | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_dquot_item.c | 21 | ||||
| -rw-r--r-- | fs/xfs/xfs_qm.c | 25 |
4 files changed, 53 insertions, 38 deletions
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 786a61e1cccd..53757d83e4f6 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -878,8 +878,8 @@ xfs_qm_dqflush_done( */ int xfs_qm_dqflush( - xfs_dquot_t *dqp, - uint flags) + struct xfs_dquot *dqp, + struct xfs_buf **bpp) { struct xfs_mount *mp = dqp->q_mount; struct xfs_buf *bp; @@ -891,14 +891,8 @@ xfs_qm_dqflush( trace_xfs_dqflush(dqp); - /* - * If not dirty, or it's pinned and we are not supposed to block, nada. - */ - if (!XFS_DQ_IS_DIRTY(dqp) || - ((flags & SYNC_TRYLOCK) && atomic_read(&dqp->q_pincount) > 0)) { - xfs_dqfunlock(dqp); - return 0; - } + *bpp = NULL; + xfs_qm_dqunpin_wait(dqp); /* @@ -918,9 +912,8 @@ xfs_qm_dqflush( xfs_trans_ail_delete(mp->m_ail, lip); else spin_unlock(&mp->m_ail->xa_lock); - - xfs_dqfunlock(dqp); - return XFS_ERROR(EIO); + error = XFS_ERROR(EIO); + goto out_unlock; } /* @@ -928,11 +921,8 @@ xfs_qm_dqflush( */ error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dqp->q_blkno, mp->m_quotainfo->qi_dqchunklen, 0, &bp); - if (error) { - ASSERT(error != ENOENT); - xfs_dqfunlock(dqp); - return error; - } + if (error) + goto out_unlock; /* * Calculate the location of the dquot inside the buffer. @@ -978,20 +968,13 @@ xfs_qm_dqflush( xfs_log_force(mp, 0); } - if (flags & SYNC_WAIT) - error = xfs_bwrite(bp); - else - xfs_buf_delwri_queue(bp); - - xfs_buf_relse(bp); - trace_xfs_dqflush_done(dqp); + *bpp = bp; + return 0; - /* - * dqp is still locked, but caller is free to unlock it now. - */ - return error; - +out_unlock: + xfs_dqfunlock(dqp); + return XFS_ERROR(EIO); } /* diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h index ef9190bd8b30..5f2a2f2c0c5b 100644 --- a/fs/xfs/xfs_dquot.h +++ b/fs/xfs/xfs_dquot.h @@ -141,7 +141,7 @@ static inline xfs_dquot_t *xfs_inode_dquot(struct xfs_inode *ip, int type) extern int xfs_qm_dqread(struct xfs_mount *, xfs_dqid_t, uint, uint, struct xfs_dquot **); extern void xfs_qm_dqdestroy(xfs_dquot_t *); -extern int xfs_qm_dqflush(xfs_dquot_t *, uint); +extern int xfs_qm_dqflush(struct xfs_dquot *, struct xfs_buf **); extern void xfs_qm_dqunpin_wait(xfs_dquot_t *); extern void xfs_qm_adjust_dqtimers(xfs_mount_t *, xfs_disk_dquot_t *); 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, diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index 18ba438386ab..95aecf52475d 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -175,16 +175,21 @@ xfs_qm_dqpurge( * we're unmounting, we do care, so we flush it and wait. */ if (XFS_DQ_IS_DIRTY(dqp)) { - int error; + struct xfs_buf *bp = NULL; + int error; /* * We don't care about getting disk errors here. We need * to purge this dquot anyway, so we go ahead regardless. */ - error = xfs_qm_dqflush(dqp, SYNC_WAIT); - if (error) + error = xfs_qm_dqflush(dqp, &bp); + if (error) { xfs_warn(mp, "%s: dquot %p flush failed", __func__, dqp); + } else { + error = xfs_bwrite(bp); + xfs_buf_relse(bp); + } xfs_dqflock(dqp); } @@ -1200,6 +1205,7 @@ STATIC int xfs_qm_flush_one( struct xfs_dquot *dqp) { + struct xfs_buf *bp = NULL; int error = 0; xfs_dqlock(dqp); @@ -1211,8 +1217,12 @@ xfs_qm_flush_one( if (!xfs_dqflock_nowait(dqp)) xfs_dqflock_pushbuf_wait(dqp); - error = xfs_qm_dqflush(dqp, 0); + error = xfs_qm_dqflush(dqp, &bp); + if (error) + goto out_unlock; + xfs_buf_delwri_queue(bp); + xfs_buf_relse(bp); out_unlock: xfs_dqunlock(dqp); return error; @@ -1479,18 +1489,23 @@ xfs_qm_dqreclaim_one( * dirty dquots. */ if (XFS_DQ_IS_DIRTY(dqp)) { + struct xfs_buf *bp = NULL; + trace_xfs_dqreclaim_dirty(dqp); /* * We flush it delayed write, so don't bother releasing the * freelist lock. */ - error = xfs_qm_dqflush(dqp, 0); + error = xfs_qm_dqflush(dqp, &bp); if (error) { xfs_warn(mp, "%s: dquot %p flush failed", __func__, dqp); + goto out_busy; } + xfs_buf_delwri_queue(bp); + xfs_buf_relse(bp); /* * Give the dquot another try on the freelist, as the * flushing will take some time. |