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| author | Mikulas Patocka <mpatocka@redhat.com> | 2024-11-18 15:52:50 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-11-18 22:54:50 +0100 |
| commit | 9c0ba14828d64744ccd195c610594ba254a1a9ab (patch) | |
| tree | bb269ff99862de485419ace4ead886f13beaee56 /kernel | |
| parent | rust: block: simplify Result<()> in validate_block_size return (diff) | |
| download | linux-9c0ba14828d64744ccd195c610594ba254a1a9ab.tar.xz linux-9c0ba14828d64744ccd195c610594ba254a1a9ab.zip | |
blk-settings: round down io_opt to physical_block_size
There was a bug report [1] where the user got a warning alignment
inconsistency. The user has optimal I/O 16776704 (0xFFFE00) and physical
block size 4096. Note that the optimal I/O size may be set by the DMA
engines or SCSI controllers and they have no knowledge about the disks
attached to them, so the situation with optimal I/O not aligned to
physical block size may happen.
This commit makes blk_validate_limits round down optimal I/O size to the
physical block size of the block device.
Closes: https://lore.kernel.org/dm-devel/1426ad71-79b4-4062-b2bf-84278be66a5d@redhat.com/T/ [1]
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes: a23634644afc ("block: take io_opt and io_min into account for max_sectors")
Cc: stable@vger.kernel.org # v6.11+
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/3dc0014b-9690-dc38-81c9-4a316a2d4fb2@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions