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| author | Mike Snitzer <snitzer@redhat.com> | 2017-12-08 06:42:27 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2017-12-08 18:49:40 +0300 |
| commit | c1fd0abee0d52eb7e2871194b6c79d54792f515f (patch) | |
| tree | 682306b0ffb307ae6dbc465459ca3db400b1aea3 /drivers/md/dm-bufio.c | |
| parent | 7e6358d244e4706fe612a77b9c36519a33600ac0 (diff) | |
| download | linux-c1fd0abee0d52eb7e2871194b6c79d54792f515f.tar.xz | |
dm mpath: fix bio-based multipath queue_if_no_path handling
Commit ca5beb76 ("dm mpath: micro-optimize the hot path relative to
MPATHF_QUEUE_IF_NO_PATH") caused bio-based DM-multipath to fail mptest's
"test_02_sdev_delete".
Restoring the logic that existed prior to commit ca5beb76 fixes this
bio-based DM-multipath regression. Also verified all mptest tests pass
with request-based DM-multipath.
This commit effectively reverts commit ca5beb76 -- but it does so
without reintroducing the need to take the m->lock spinlock in
must_push_back_{rq,bio}.
Fixes: ca5beb76 ("dm mpath: micro-optimize the hot path relative to MPATHF_QUEUE_IF_NO_PATH")
Cc: stable@vger.kernel.org # 4.12+
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-bufio.c')
0 files changed, 0 insertions, 0 deletions