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| author | Jens Axboe <axboe@kernel.dk> | 2017-10-25 12:33:42 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-21 14:13:10 +0100 |
| commit | 2a35d21a4d12fe774c46d17831e2938781179c83 (patch) | |
| tree | 8469cc35b853d16023cdefd859148b08bc00a988 /block/blk-cgroup.c | |
| parent | 5d01e063296a80e93abe93803602e5cf37309865 (diff) | |
elevator: lookup mq vs non-mq elevators
[ Upstream commit 2527d99789e248576ac8081530cd4fd88730f8c7 ]
If an IO scheduler is selected via elevator= and it doesn't match
the driver in question wrt blk-mq support, then we fail to boot.
The elevator= parameter is deprecated and only supported for
non-mq devices. Augment the elevator lookup API so that we
pass in if we're looking for an mq capable scheduler or not,
so that we only ever return a valid type for the queue in
question.
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=196695
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'block/blk-cgroup.c')
0 files changed, 0 insertions, 0 deletions