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authorMing Lei <ming.lei@redhat.com>2024-04-24 16:47:22 +0300
committerJens Axboe <axboe@kernel.dk>2024-05-07 05:27:51 +0300
commitffd379c13fc0ab2c7c4313e7a01c71d9d202cc88 (patch)
tree62db69962865a98131d15bbd21c477d08816609f
parentfb15ffd06115047689d05897510b423f9d144461 (diff)
downloadlinux-ffd379c13fc0ab2c7c4313e7a01c71d9d202cc88.tar.xz
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: b561ea56a264 ("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>
-rw-r--r--block/blk-settings.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c
index d2731843f2fc..9d6033e01f2e 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -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