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scsi: sg: Don't use GFP_ATOMIC in sg_start_req()

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sg_start_req() is called from normal user context and can sleep when
waiting for memory.  Switch it to use GFP_KERNEL, which fixes allocation
failures seen with the bio_alloc rework.

Fixes: b520c4eef8 ("block: split bio_alloc_bioset more clearly into a fast and slowpath")
Reported-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260415060813.807659-2-hch@lst.de
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Christoph Hellwig 2026-04-15 08:08:06 +02:00 committed by Martin K. Petersen
parent 772a896a56
commit 7b03c93d2b
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/sg.c
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@ -1801,7 +1801,7 @@ sg_start_req(Sg_request *srp, unsigned char *cmd)
}
res = blk_rq_map_user_io(rq, md, hp->dxferp, hp->dxfer_len,
GFP_ATOMIC, iov_count, iov_count, 1, rw);
GFP_KERNEL, iov_count, iov_count, 1, rw);
if (!res) {
srp->bio = rq->bio;