diff options
Diffstat (limited to 'block/blk-exec.c')
-rw-r--r-- | block/blk-exec.c | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/block/blk-exec.c b/block/blk-exec.c deleted file mode 100644 index 1db44ca0f4a6..000000000000 --- a/block/blk-exec.c +++ /dev/null @@ -1,93 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Functions related to setting various queue properties from drivers - */ -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/bio.h> -#include <linux/blkdev.h> -#include <linux/blk-mq.h> -#include <linux/sched/sysctl.h> - -#include "blk.h" -#include "blk-mq-sched.h" - -/** - * blk_end_sync_rq - executes a completion event on a request - * @rq: request to complete - * @error: end I/O status of the request - */ -static void blk_end_sync_rq(struct request *rq, blk_status_t error) -{ - struct completion *waiting = rq->end_io_data; - - rq->end_io_data = NULL; - - /* - * complete last, if this is a stack request the process (and thus - * the rq pointer) could be invalid right after this complete() - */ - complete(waiting); -} - -/** - * blk_execute_rq_nowait - insert a request into queue for execution - * @q: queue to insert the request in - * @bd_disk: matching gendisk - * @rq: request to insert - * @at_head: insert request at head or tail of queue - * @done: I/O completion handler - * - * Description: - * Insert a fully prepared request at the back of the I/O scheduler queue - * for execution. Don't wait for completion. - * - * Note: - * This function will invoke @done directly if the queue is dead. - */ -void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk, - struct request *rq, int at_head, - rq_end_io_fn *done) -{ - WARN_ON(irqs_disabled()); - WARN_ON(!blk_rq_is_passthrough(rq)); - - rq->rq_disk = bd_disk; - rq->end_io = done; - - /* - * don't check dying flag for MQ because the request won't - * be reused after dying flag is set - */ - blk_mq_sched_insert_request(rq, at_head, true, false); -} -EXPORT_SYMBOL_GPL(blk_execute_rq_nowait); - -/** - * blk_execute_rq - insert a request into queue for execution - * @q: queue to insert the request in - * @bd_disk: matching gendisk - * @rq: request to insert - * @at_head: insert request at head or tail of queue - * - * Description: - * Insert a fully prepared request at the back of the I/O scheduler queue - * for execution and wait for completion. - */ -void blk_execute_rq(struct request_queue *q, struct gendisk *bd_disk, - struct request *rq, int at_head) -{ - DECLARE_COMPLETION_ONSTACK(wait); - unsigned long hang_check; - - rq->end_io_data = &wait; - blk_execute_rq_nowait(q, bd_disk, rq, at_head, blk_end_sync_rq); - - /* Prevent hang_check timer from firing at us during very long I/O */ - hang_check = sysctl_hung_task_timeout_secs; - if (hang_check) - while (!wait_for_completion_io_timeout(&wait, hang_check * (HZ/2))); - else - wait_for_completion_io(&wait); -} -EXPORT_SYMBOL(blk_execute_rq); |