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block: add a str_to_blk_op helper

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Add a helper to find the REQ_OP_XYZ constant from the "XYZ" string.
This will be used for the error injection debugfs interface.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@kernel.org>
Reviewed-by: Md Haris Iqbal <haris.iqbal@linux.dev>
Link: https://patch.msgid.link/20260611140703.2401204-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2026-06-11 16:06:46 +02:00 committed by Jens Axboe
parent ce351560b7
commit d39a63ead3
2 changed files with 11 additions and 0 deletions
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10
block/blk-core.c
View File

@ -132,6 +132,16 @@ inline const char *blk_op_str(enum req_op op)
}
EXPORT_SYMBOL_GPL(blk_op_str);
enum req_op str_to_blk_op(const char *op)
{
int i;
for (i = 0; i < ARRAY_SIZE(blk_op_name); i++)
if (blk_op_name[i] && !strcmp(blk_op_name[i], op))
return (enum req_op)i;
return REQ_OP_LAST;
}
#define ENT(_tag, _errno, _desc) \
[BLK_STS_##_tag] = { \
.errno = _errno, \

1
block/blk.h
View File

@ -53,6 +53,7 @@ void blk_free_flush_queue(struct blk_flush_queue *q);
const char *blk_status_to_str(blk_status_t status);
const char *blk_status_to_tag(blk_status_t status);
blk_status_t tag_to_blk_status(const char *tag);
enum req_op str_to_blk_op(const char *op);
bool __blk_mq_unfreeze_queue(struct request_queue *q, bool force_atomic);
bool blk_queue_start_drain(struct request_queue *q);