diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2018-07-03 13:34:22 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-29 13:40:14 +0100 |
| commit | 5af2d106ca7b1777bbb4724521c6c130700ee7b8 (patch) | |
| tree | 5f62fa9ce1640337dc178c8303349aa4b2d7eddb /tools | |
| parent | f5cecc055048208051cfd2db1793f923668f29b6 (diff) | |
block: fix infinite loop if the device loses discard capability
[ Upstream commit b88aef36b87c9787a4db724923ec4f57dfd513f3 ]
If __blkdev_issue_discard is in progress and a device mapper device is
reloaded with a table that doesn't support discard,
q->limits.max_discard_sectors is set to zero. This results in infinite
loop in __blkdev_issue_discard.
This patch checks if max_discard_sectors is zero and aborts with
-EOPNOTSUPP.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Tested-by: Zdenek Kabelac <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions