diff options
| author | Christoph Hellwig <hch@lst.de> | 2021-12-09 09:31:26 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-12-16 20:59:01 +0300 |
| commit | 091abcb3efd71cb18e80c8f040d9e4a634d8906d (patch) | |
| tree | dffd42b2e43160e2d364d2f0e6a4d27434400a6c | |
| parent | edf70ff5a1ed9769da35178454d743828061a6a3 (diff) | |
| download | linux-091abcb3efd71cb18e80c8f040d9e4a634d8906d.tar.xz | |
block: cleanup ioc_clear_queue
Fold __ioc_clear_queue into ioc_clear_queue and switch to always
use plain _irq locking instead of the more expensive _irqsave that
is not needed here.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20211209063131.18537-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-ioc.c | 33 |
1 files changed, 11 insertions, 22 deletions
diff --git a/block/blk-ioc.c b/block/blk-ioc.c index ca996214c10a..f98a29ee8f36 100644 --- a/block/blk-ioc.c +++ b/block/blk-ioc.c @@ -192,27 +192,6 @@ void exit_io_context(struct task_struct *task) } } -static void __ioc_clear_queue(struct list_head *icq_list) -{ - unsigned long flags; - - rcu_read_lock(); - while (!list_empty(icq_list)) { - struct io_cq *icq = list_entry(icq_list->next, - struct io_cq, q_node); - struct io_context *ioc = icq->ioc; - - spin_lock_irqsave(&ioc->lock, flags); - if (icq->flags & ICQ_DESTROYED) { - spin_unlock_irqrestore(&ioc->lock, flags); - continue; - } - ioc_destroy_icq(icq); - spin_unlock_irqrestore(&ioc->lock, flags); - } - rcu_read_unlock(); -} - /** * ioc_clear_queue - break any ioc association with the specified queue * @q: request_queue being cleared @@ -227,7 +206,17 @@ void ioc_clear_queue(struct request_queue *q) list_splice_init(&q->icq_list, &icq_list); spin_unlock_irq(&q->queue_lock); - __ioc_clear_queue(&icq_list); + rcu_read_lock(); + while (!list_empty(&icq_list)) { + struct io_cq *icq = + list_entry(icq_list.next, struct io_cq, q_node); + + spin_lock_irq(&icq->ioc->lock); + if (!(icq->flags & ICQ_DESTROYED)) + ioc_destroy_icq(icq); + spin_unlock_irq(&icq->ioc->lock); + } + rcu_read_unlock(); } static struct io_context *alloc_io_context(gfp_t gfp_flags, int node) |