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| author | Damien Le Moal <dlemoal@kernel.org> | 2025-06-25 18:33:24 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-20 18:30:51 +0200 |
| commit | 8263f32e1017d88ae75859dca955308c3cd89232 (patch) | |
| tree | 426a71acd6afaa3b6f33d52f1d17a32f5e0fa70c /drivers/md | |
| parent | 2214b5de0a93f51d145ff22a98257868790e7abc (diff) | |
| download | linux-8263f32e1017d88ae75859dca955308c3cd89232.tar.gz linux-8263f32e1017d88ae75859dca955308c3cd89232.tar.bz2 linux-8263f32e1017d88ae75859dca955308c3cd89232.zip | |
block: Introduce bio_needs_zone_write_plugging()
commit f70291411ba20d50008db90a6f0731efac27872c upstream.
In preparation for fixing device mapper zone write handling, introduce
the inline helper function bio_needs_zone_write_plugging() to test if a
BIO requires handling through zone write plugging using the function
blk_zone_plug_bio(). This function returns true for any write
(op_is_write(bio) == true) operation directed at a zoned block device
using zone write plugging, that is, a block device with a disk that has
a zone write plug hash table.
This helper allows simplifying the check on entry to blk_zone_plug_bio()
and used in to protect calls to it for blk-mq devices and DM devices.
Fixes: f211268ed1f9 ("dm: Use the block layer zone append emulation")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20250625093327.548866-3-dlemoal@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 92e5a233f516..8079c060e05b 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1800,7 +1800,9 @@ static inline bool dm_zone_bio_needs_split(struct mapped_device *md, } static inline bool dm_zone_plug_bio(struct mapped_device *md, struct bio *bio) { - return dm_emulate_zone_append(md) && blk_zone_plug_bio(bio, 0); + if (!bio_needs_zone_write_plugging(bio)) + return false; + return blk_zone_plug_bio(bio, 0); } static blk_status_t __send_zone_reset_all_emulated(struct clone_info *ci, |