Michal and Andrew, here is the patch On Mon, Jul 08, 2013 at 04:34:21PM +1000, Dave Chinner wrote: > From: Dave Chinner <dchinner@xxxxxxxxxx> > > The new LRU list isolation code in xfs_qm_dquot_isolate() isn't > completely up to date. Firstly, it needs conversion to return enum > lru_status values, not raw numbers. Secondly - most importantly - it > fails to unlock the dquot and relock the LRU in the LRU_RETRY path. > This leads to deadlocks in xfstests generic/232. Fix them. > > Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx> > --- > fs/xfs/xfs_qm.c | 10 ++++++---- > 1 file changed, 6 insertions(+), 4 deletions(-) > > diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c > index 46743cf..a10a720 100644 > --- a/fs/xfs/xfs_qm.c > +++ b/fs/xfs/xfs_qm.c > @@ -659,7 +659,7 @@ xfs_qm_dquot_isolate( > trace_xfs_dqreclaim_want(dqp); > list_del_init(&dqp->q_lru); > XFS_STATS_DEC(xs_qm_dquot_unused); > - return 0; > + return LRU_REMOVED; > } > > /* > @@ -705,17 +705,19 @@ xfs_qm_dquot_isolate( > XFS_STATS_DEC(xs_qm_dquot_unused); > trace_xfs_dqreclaim_done(dqp); > XFS_STATS_INC(xs_qm_dqreclaims); > - return 0; > + return LRU_REMOVED; > > out_miss_busy: > trace_xfs_dqreclaim_busy(dqp); > XFS_STATS_INC(xs_qm_dqreclaim_misses); > - return 2; > + return LRU_SKIP; > > out_unlock_dirty: > trace_xfs_dqreclaim_busy(dqp); > XFS_STATS_INC(xs_qm_dqreclaim_misses); > - return 3; > + xfs_dqunlock(dqp); > + spin_lock(lru_lock); > + return LRU_RETRY; > } > > static unsigned long > -- > 1.8.3.2 > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>