[PATCH v3 13/14] block: Simplify zone write plug BIO abort

Damien Le Moal
2024-05-01T11:09:24Z

When BIOs plugged in a zone write plug are aborted,
blk_zone_wplug_bio_io_error() clears the BIO BIO_ZONE_WRITE_PLUGGING
flag so that bio_io_error(bio) does not end up calling
blk_zone_write_plug_bio_endio() and we thus need to manually drop the
reference on the zone write plug held by the aborted BIO.

Move the call to disk_put_zone_wplug() that is alwasy following the call
to blk_zone_wplug_bio_io_error() inside that function to simplify the
code.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
---
block/blk-zoned.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/block/blk-zoned.c b/block/blk-zoned.c
index 132eb988f4d7..15e4e14e16f7 100644
--- a/block/blk-zoned.c
+++ b/block/blk-zoned.c
@@ -634,12 +634,14 @@ static struct blk_zone_wplug *disk_get_and_lock_zone_wplug(struct gendisk *disk,
return zwplug;
}

-static inline void blk_zone_wplug_bio_io_error(struct bio *bio)
+static inline void blk_zone_wplug_bio_io_error(struct blk_zone_wplug *zwplug,
+ struct bio *bio)
{
- struct request_queue *q = bio->bi_bdev->bd_disk->queue;
+ struct request_queue *q = zwplug->disk->queue;

bio_clear_flag(bio, BIO_ZONE_WRITE_PLUGGING);
bio_io_error(bio);
+ disk_put_zone_wplug(zwplug);
blk_queue_exit(q);
}

@@ -650,10 +652,8 @@ static void disk_zone_wplug_abort(struct blk_zone_wplug *zwplug)
{
struct bio *bio;

- while ((bio = bio_list_pop(&zwplug->bio_list))) {
- blk_zone_wplug_bio_io_error(bio);
- disk_put_zone_wplug(zwplug);
- }
+ while ((bio = bio_list_pop(&zwplug->bio_list)))
+ blk_zone_wplug_bio_io_error(zwplug, bio);
}

/*
@@ -673,8 +673,7 @@ static void disk_zone_wplug_abort_unaligned(struct gendisk *disk,
if (wp_offset >= zone_capacity ||
(bio_op(bio) != REQ_OP_ZONE_APPEND &&
bio_offset_from_zone_start(bio) != wp_offset)) {
- blk_zone_wplug_bio_io_error(bio);
- disk_put_zone_wplug(zwplug);
+ blk_zone_wplug_bio_io_error(zwplug, bio);
continue;
}

--
2.44.0