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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-22 11:05:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-22 11:05:15 -0700 |
| commit | f036d67c02b6f6966b0d45e9a16c9f2e7ede80a3 (patch) | |
| tree | 5b8183940408ed9b79203a9055f1389422ce1050 /lib | |
| parent | bdd1d82e7d02bd2764a68a5cc54533dfc2ba452a (diff) | |
| parent | bb5faa99f0ce40756ab7bbbce4f16c01ca5ebd5a (diff) | |
Merge tag 'block-6.5-2023-07-21' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- Fix for loop regressions (Mauricio)
- Fix a potential stall with batched wakeups in sbitmap (David)
- Fix for stall with recursive plug flushes (Ross)
- Skip accounting of empty requests for blk-iocost (Chengming)
- Remove a dead field in struct blk_mq_hw_ctx (Chengming)
* tag 'block-6.5-2023-07-21' of git://git.kernel.dk/linux:
loop: do not enforce max_loop hard limit by (new) default
loop: deprecate autoloading callback loop_probe()
sbitmap: fix batching wakeup
blk-iocost: skip empty flush bio in iocost
blk-mq: delete dead struct blk_mq_hw_ctx->queued field
blk-mq: Fix stall due to recursive flush plug
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/sbitmap.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/lib/sbitmap.c b/lib/sbitmap.c index eff4e42c425a..d0a5081dfd12 100644 --- a/lib/sbitmap.c +++ b/lib/sbitmap.c @@ -550,7 +550,7 @@ EXPORT_SYMBOL_GPL(sbitmap_queue_min_shallow_depth); static void __sbitmap_queue_wake_up(struct sbitmap_queue *sbq, int nr) { - int i, wake_index; + int i, wake_index, woken; if (!atomic_read(&sbq->ws_active)) return; @@ -567,13 +567,12 @@ static void __sbitmap_queue_wake_up(struct sbitmap_queue *sbq, int nr) */ wake_index = sbq_index_inc(wake_index); - /* - * It is sufficient to wake up at least one waiter to - * guarantee forward progress. - */ - if (waitqueue_active(&ws->wait) && - wake_up_nr(&ws->wait, nr)) - break; + if (waitqueue_active(&ws->wait)) { + woken = wake_up_nr(&ws->wait, nr); + if (woken == nr) + break; + nr -= woken; + } } if (wake_index != atomic_read(&sbq->wake_index)) |