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block: set default max segment size in case of virt_boundary 

For devices with virt_boundary limit, the driver may provide zero max
segment size, we have to set it as UINT_MAX at default. Otherwise, it
may cause warning in driver when handling sglist.

Fix it by setting default max segment size as UINT_MAX.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Mike Snitzer <snitzer@kernel.org>
Fixes: b561ea56a2 ("block: allow device to have both virt_boundary_mask and max segment size")
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Closes: https://lore.kernel.org/linux-block/7e38b67c-9372-a42d-41eb-abdce33d3372@linux-m68k.org/
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20240424134722.2584284-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ming Lei 2024-04-24 21:47:22 +08:00 committed by Jens Axboe
parent fb15ffd061
commit ffd379c13f
1 changed files with 4 additions and 1 deletions
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5
block/blk-settings.c
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@ -188,7 +188,10 @@ static int blk_validate_limits(struct queue_limits *lim)
* bvec and lower layer bio splitting is supposed to handle the two
* correctly.
*/
if (!lim->virt_boundary_mask) {
if (lim->virt_boundary_mask) {
if (!lim->max_segment_size)
lim->max_segment_size = UINT_MAX;
} else {
/*
* The maximum segment size has an odd historic 64k default that
* drivers probably should override. Just like the I/O size we