[PATCH 01/14] block: add a queue_limits_set helper
From: Christoph Hellwig <hch@lst.de>
Date: 2024-02-28 22:56:55
Also in:
dm-devel, linux-block
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
Add a small wrapper around queue_limits_commit_update for stacking drivers that don't want to update existing limits, but set an entirely new set. Signed-off-by: Christoph Hellwig <hch@lst.de> --- block/blk-settings.c | 18 ++++++++++++++++++ include/linux/blkdev.h | 1 + 2 files changed, 19 insertions(+)
diff --git a/block/blk-settings.c b/block/blk-settings.c
index b6bbe683d218fa..1989a177be201b 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c@@ -266,6 +266,24 @@ int queue_limits_commit_update(struct request_queue *q, } EXPORT_SYMBOL_GPL(queue_limits_commit_update); +/** + * queue_limits_commit_set - apply queue limits to queue + * @q: queue to update + * @lim: limits to apply + * + * Apply the limits in @lim that were freshly initialized to @q. + * To update existing limits use queue_limits_start_update() and + * queue_limits_commit_update() instead. + * + * Returns 0 if successful, else a negative error code. + */ +int queue_limits_set(struct request_queue *q, struct queue_limits *lim) +{ + mutex_lock(&q->limits_lock); + return queue_limits_commit_update(q, lim); +} +EXPORT_SYMBOL_GPL(queue_limits_set); + /** * blk_queue_bounce_limit - set bounce buffer limit for queue * @q: the request queue for the device
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index a14ea934413850..dd510ad7ce4b45 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h@@ -889,6 +889,7 @@ queue_limits_start_update(struct request_queue *q) } int queue_limits_commit_update(struct request_queue *q, struct queue_limits *lim); +int queue_limits_set(struct request_queue *q, struct queue_limits *lim); /* * Access functions for manipulating queue properties
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2.39.2