Viewing: virtio_scsi-silence-page-allocation-failure.patch
commit 80a9e94df1865287dc67676528d3141a020288be
Author: Li Dongyang <dongyangli@ddn.com>
AuthorDate: Thu Oct 10 20:54:25 2024 +1100
scsi: silent page allocation failure in virtio_scsi
virtio_scsi uses GFP_ATOMIC to allocate memory, with large
requests sometimes the allocation fails.
We don't need to throw up the allocation error and dump stack
for this as virtio_scsi will return SCSI_MLQUEUE_HOST_BUSY
which translates to BLK_STS_RESOURCE and that will be
handled by upper layers.
Signed-off-by: Li Dongyang <dongyangli@ddn.com>
Change-Id: I7117711d05794d57ab294f3bc6746de1979afc22
Index: linux-4.18.0-553.16.1.el8_10/drivers/scsi/virtio_scsi.c
===================================================================
--- linux-4.18.0-553.16.1.el8_10.orig/drivers/scsi/virtio_scsi.c
+++ linux-4.18.0-553.16.1.el8_10/drivers/scsi/virtio_scsi.c
@@ -455,7 +455,8 @@ static int __virtscsi_add_cmd(struct vir
sgs[out_num + in_num++] = in->sgl;
}
- return virtqueue_add_sgs(vq, sgs, out_num, in_num, cmd, GFP_ATOMIC);
+ return virtqueue_add_sgs(vq, sgs, out_num, in_num, cmd,
+ GFP_ATOMIC | __GFP_NOWARN);
}
static void virtscsi_kick_vq(struct virtio_scsi_vq *vq)
