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| author | Christoph Hellwig <hch@lst.de> | 2019-07-24 18:26:56 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-07-26 12:50:57 -0600 |
| commit | c6c84f78e2f77be37b9a150ed33be992198741f0 (patch) | |
| tree | b17280da070959c9478ace36f0f184861ff969e1 /block | |
| parent | 9c0b2596f2ac30967af0b8bb9f038b65926a6f00 (diff) | |
| download | linux-0-day-c6c84f78e2f77be37b9a150ed33be992198741f0.tar.gz linux-0-day-c6c84f78e2f77be37b9a150ed33be992198741f0.tar.xz | |
block: fix max segment size handling in blk_queue_virt_boundary
We should only set the max segment size to unlimited if we actually
have a virt boundary. Otherwise we accidentally clear that limit
when called from the SCSI midlayer, which always calls
blk_queue_virt_boundary, even if that mask is 0.
Fixes: 7ad388d8e4c7 ("scsi: core: add a host / host template field for the virt boundary")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-settings.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c index 2ae348c101a05..2c1831207a8f7 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -752,7 +752,8 @@ void blk_queue_virt_boundary(struct request_queue *q, unsigned long mask) * page (which might not be idential to the Linux PAGE_SIZE). Because * of that they are not limited by our notion of "segment size". */ - q->limits.max_segment_size = UINT_MAX; + if (mask) + q->limits.max_segment_size = UINT_MAX; } EXPORT_SYMBOL(blk_queue_virt_boundary); |