On Wed, May 02, 2018 at 02:21:48PM -0400, James Simmons wrote: > From: Lai Siyao <lai.siyao@xxxxxxxxx> > > Currently we set LU_OBJECT_HEARD_BANSHEE on object when we want > to remove object from cache, but this may lead to deadlock, because > when other process lookup such object, it needs to wait for this > object until release (done at last refcount put), while that process > maybe already hold an LDLM lock. > > Now that current code can handle dying object correctly, we can just > return such object in lookup, thus the above deadlock can be avoided. > > Signed-off-by: Lai Siyao <lai.siyao@xxxxxxxxx> > Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-9049 > Reviewed-on: https://review.whamcloud.com/26965 > Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@xxxxxxxxx> > Tested-by: Cliff White <cliff.white@xxxxxxxxx> > Reviewed-by: Fan Yong <fan.yong@xxxxxxxxx> > Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> > Signed-off-by: James Simmons <jsimmons@xxxxxxxxxxxxx> > --- > drivers/staging/lustre/lustre/include/lu_object.h | 2 +- > drivers/staging/lustre/lustre/obdclass/lu_object.c | 82 +++++++++------------- > 2 files changed, 36 insertions(+), 48 deletions(-) Patch does not apply to my tree :( _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
