diff options
| author |   Bart Van Assche <bart.vanassche@wdc.com> | 2017-08-09 11:32:12 -0700 |
|---|---|---|
| committer |   Mike Snitzer <snitzer@redhat.com> | 2017-08-28 09:58:27 -0400 |
| commit | 1c23484c355ec360ca2f37914f8a4802c6baeead (patch) | |
| tree | 8825a50d4c93409de59318edf975023cbd3fc907 /include | |
| parent | dm: fix printk() rate limiting code (diff) | |
| download | wireguard-linux-1c23484c355ec360ca2f37914f8a4802c6baeead.tar.xz wireguard-linux-1c23484c355ec360ca2f37914f8a4802c6baeead.zip | |
dm mpath: do not lock up a CPU with requeuing activity
When using the block layer in single queue mode, get_request()
returns ERR_PTR(-EAGAIN) if the queue is dying and the REQ_NOWAIT
flag has been passed to get_request(). Avoid that the kernel
reports soft lockup complaints in this case due to continuous
requeuing activity.
Fixes: 7083abbbf ("dm mpath: avoid that path removal can trigger an infinite loop")
Cc: stable@vger.kernel.org
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions