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block: change wait on bd_claiming to use a var_waitqueue

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bd_prepare_to_claim() waits for a var to change, not for a bit to be
cleared. Change from bit_waitqueue() to __var_waitqueue() and
correspondingly use wake_up_var(). This will allow a future patch which
change the "bit" function to expect an "unsigned long *" instead of
"void *".

Signed-off-by: NeilBrown <neilb@suse.de>
Link: https://lore.kernel.org/r/20240826063659.15327-2-neilb@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
NeilBrown 2024-08-26 16:30:58 +10:00 committed by Jens Axboe
parent 76c313f658
commit aa3d8a3678
1 changed files with 2 additions and 2 deletions
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4
block/bdev.c
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@ -548,7 +548,7 @@ retry:
/* if claiming is already in progress, wait for it to finish */
if (whole->bd_claiming) {
wait_queue_head_t *wq = bit_waitqueue(&whole->bd_claiming, 0);
wait_queue_head_t *wq = __var_waitqueue(&whole->bd_claiming);
DEFINE_WAIT(wait);
prepare_to_wait(wq, &wait, TASK_UNINTERRUPTIBLE);
@ -571,7 +571,7 @@ static void bd_clear_claiming(struct block_device *whole, void *holder)
/* tell others that we're done */
BUG_ON(whole->bd_claiming != holder);
whole->bd_claiming = NULL;
wake_up_bit(&whole->bd_claiming, 0);
wake_up_var(&whole->bd_claiming);
}
/**