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| author | Jens Axboe <axboe@kernel.dk> | 2021-08-12 11:42:53 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-08-23 13:45:15 -0600 |
| commit | 270a1c913ebd745ebee716af5f7215e1c2b30cc0 (patch) | |
| tree | d1cc0c8163721a335687aac07d14a401df439fd2 /tools/perf/scripts/python/compaction-times.py | |
| parent | 01cfa28af486c9df3775232f10c3dd7ba2e88318 (diff) | |
block: provide bio_clear_hipri() helper
Any case that turns off REQ_HIPRI must also clear BIO_PERCPU_CACHE,
as non-polled IO may complete through hard/soft IRQ and hence isn't
safe for our polled bio alloc cache.
Provide a helper that does just that, and use it in the merging code as
well if we split a bio and turn off polling.
Fixes: be863b9e4348 ("block: clear BIO_PERCPU_CACHE flag if polling isn't supported")
Reported-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python/compaction-times.py')
0 files changed, 0 insertions, 0 deletions