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| author | Keith Busch <kbusch@kernel.org> | 2022-09-09 20:40:22 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-09-12 08:10:34 +0200 |
| commit | 4acb83417cadfdcbe64215f9d0ddcf3132af808e (patch) | |
| tree | 45bdd14acf29ddc9b49cbb26e30323446d4aaeb6 /tools | |
| parent | sbitmap: Use atomic_long_try_cmpxchg in __sbitmap_queue_get_batch (diff) | |
| download | linux-4acb83417cadfdcbe64215f9d0ddcf3132af808e.tar.xz linux-4acb83417cadfdcbe64215f9d0ddcf3132af808e.zip | |
sbitmap: fix batched wait_cnt accounting
Batched completions can clear multiple bits, but we're only decrementing
the wait_cnt by one each time. This can cause waiters to never be woken,
stalling IO. Use the batched count instead.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215679
Signed-off-by: Keith Busch <kbusch@kernel.org>
Link: https://lore.kernel.org/r/20220909184022.1709476-1-kbusch@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions