diff options
| author | Christoph Hellwig <hch@lst.de> | 2024-11-26 13:21:36 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-02 08:59:33 +0300 |
| commit | 6b9ebcbd315b87285784eae9baf28fa79eccceac (patch) | |
| tree | 5371abe3b7c5dc3a06a991efb52ff0b3fdffe498 /tools/perf/scripts/python/syscall-counts.py | |
| parent | ccc4e973fd19c6e951533089b392035d95fcbe93 (diff) | |
| download | linux-6b9ebcbd315b87285784eae9baf28fa79eccceac.tar.xz | |
mq-deadline: don't call req_get_ioprio from the I/O completion handler
commit 1b0cab327e060ccf397ae634a34c84dd1d4d2bb2 upstream.
req_get_ioprio looks at req->bio to find the I/O priority, which is not
set when completing bios that the driver fully iterated through.
Stash away the dd_per_prio in the elevator private data instead of looking
it up again to optimize the code a bit while fixing the regression from
removing the per-request ioprio value.
Fixes: 6975c1a486a4 ("block: remove the ioprio field from struct request")
Reported-by: Chris Bainbridge <chris.bainbridge@gmail.com>
Reported-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Chris Bainbridge <chris.bainbridge@gmail.com>
Tested-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20241126102136.619067-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions