LU-18225 kernel: 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.

Change-Id: I7117711d05794d57ab294f3bc6746de1979afc22
Test-Parameters: trivial
Signed-off-by: Li Dongyang <dongyangli@ddn.com>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/56644
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Ronnie Sahlberg <rsahlberg@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/lustre/kernel_patches/patches/virtio_scsi-silence-page-allocation-failure.patch b/lustre/kernel_patches/patches/virtio_scsi-silence-page-allocation-failure.patch
new file mode 100644 (file)
index 0000000..14a57c5
--- /dev/null
+++ b/lustre/kernel_patches/patches/virtio_scsi-silence-page-allocation-failure.patch
@@ -0,0 +1,14 @@
+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)

diff --git a/lustre/kernel_patches/series/4.18-rhel8.10.series b/lustre/kernel_patches/series/4.18-rhel8.10.series
index 04cc58e..8b9ea55 100644 (file)
--- a/lustre/kernel_patches/series/4.18-rhel8.10.series
+++ b/lustre/kernel_patches/series/4.18-rhel8.10.series
@@ -2,3 +2,4 @@ block-integrity-allow-optional-integrity-functions-rhel8.3.patch
 block-pass-bio-into-integrity_processing_fn-rhel8.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
 mm-wait_for_stable_page-should-check-for-bdev-rhel8.6.patch
+virtio_scsi-silence-page-allocation-failure.patch

diff --git a/lustre/kernel_patches/series/4.18-rhel8.4.series b/lustre/kernel_patches/series/4.18-rhel8.4.series
index 0719776..6e39826 100644 (file)
--- a/lustre/kernel_patches/series/4.18-rhel8.4.series
+++ b/lustre/kernel_patches/series/4.18-rhel8.4.series
@@ -2,3 +2,4 @@ block-bio-integrity-Advance-seed-correctly-for-large.patch
 block-integrity-allow-optional-integrity-functions-rhel8.3.patch
 block-pass-bio-into-integrity_processing_fn-rhel8.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
+virtio_scsi-silence-page-allocation-failure.patch

diff --git a/lustre/kernel_patches/series/4.18-rhel8.5.series b/lustre/kernel_patches/series/4.18-rhel8.5.series
index 0719776..6e39826 100644 (file)
--- a/lustre/kernel_patches/series/4.18-rhel8.5.series
+++ b/lustre/kernel_patches/series/4.18-rhel8.5.series
@@ -2,3 +2,4 @@ block-bio-integrity-Advance-seed-correctly-for-large.patch
 block-integrity-allow-optional-integrity-functions-rhel8.3.patch
 block-pass-bio-into-integrity_processing_fn-rhel8.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
+virtio_scsi-silence-page-allocation-failure.patch

diff --git a/lustre/kernel_patches/series/4.18-rhel8.6.series b/lustre/kernel_patches/series/4.18-rhel8.6.series
index 8d9a7f7..5bbd1dd 100644 (file)
--- a/lustre/kernel_patches/series/4.18-rhel8.6.series
+++ b/lustre/kernel_patches/series/4.18-rhel8.6.series
@@ -3,3 +3,4 @@ block-integrity-allow-optional-integrity-functions-rhel8.3.patch
 block-pass-bio-into-integrity_processing_fn-rhel8.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
 mm-wait_for_stable_page-should-check-for-bdev-rhel8.6.patch
+virtio_scsi-silence-page-allocation-failure.patch

diff --git a/lustre/kernel_patches/series/4.18-rhel8.7.series b/lustre/kernel_patches/series/4.18-rhel8.7.series
index 04cc58e..8b9ea55 100644 (file)
--- a/lustre/kernel_patches/series/4.18-rhel8.7.series
+++ b/lustre/kernel_patches/series/4.18-rhel8.7.series
@@ -2,3 +2,4 @@ block-integrity-allow-optional-integrity-functions-rhel8.3.patch
 block-pass-bio-into-integrity_processing_fn-rhel8.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
 mm-wait_for_stable_page-should-check-for-bdev-rhel8.6.patch
+virtio_scsi-silence-page-allocation-failure.patch

diff --git a/lustre/kernel_patches/series/4.18-rhel8.8.series b/lustre/kernel_patches/series/4.18-rhel8.8.series
index 04cc58e..8b9ea55 100644 (file)
--- a/lustre/kernel_patches/series/4.18-rhel8.8.series
+++ b/lustre/kernel_patches/series/4.18-rhel8.8.series
@@ -2,3 +2,4 @@ block-integrity-allow-optional-integrity-functions-rhel8.3.patch
 block-pass-bio-into-integrity_processing_fn-rhel8.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
 mm-wait_for_stable_page-should-check-for-bdev-rhel8.6.patch
+virtio_scsi-silence-page-allocation-failure.patch

diff --git a/lustre/kernel_patches/series/4.18-rhel8.9.series b/lustre/kernel_patches/series/4.18-rhel8.9.series
index 04cc58e..8b9ea55 100644 (file)
--- a/lustre/kernel_patches/series/4.18-rhel8.9.series
+++ b/lustre/kernel_patches/series/4.18-rhel8.9.series
@@ -2,3 +2,4 @@ block-integrity-allow-optional-integrity-functions-rhel8.3.patch
 block-pass-bio-into-integrity_processing_fn-rhel8.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
 mm-wait_for_stable_page-should-check-for-bdev-rhel8.6.patch
+virtio_scsi-silence-page-allocation-failure.patch

diff --git a/lustre/kernel_patches/series/5.14-rhel9.1.series b/lustre/kernel_patches/series/5.14-rhel9.1.series
index a3c8f85..325cea1 100644 (file)
--- a/lustre/kernel_patches/series/5.14-rhel9.1.series
+++ b/lustre/kernel_patches/series/5.14-rhel9.1.series
@@ -2,3 +2,4 @@ block-integrity-allow-optional-integrity-functions-rhel9.1.patch
 block-pass-bio-into-integrity_processing_fn-rhel9.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
 add-and-use-a-per-mapping-stable-writes-flag-rhel9.patch
+virtio_scsi-silence-page-allocation-failure.patch

diff --git a/lustre/kernel_patches/series/5.14-rhel9.2.series b/lustre/kernel_patches/series/5.14-rhel9.2.series
index a3c8f85..325cea1 100644 (file)
--- a/lustre/kernel_patches/series/5.14-rhel9.2.series
+++ b/lustre/kernel_patches/series/5.14-rhel9.2.series
@@ -2,3 +2,4 @@ block-integrity-allow-optional-integrity-functions-rhel9.1.patch
 block-pass-bio-into-integrity_processing_fn-rhel9.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
 add-and-use-a-per-mapping-stable-writes-flag-rhel9.patch
+virtio_scsi-silence-page-allocation-failure.patch

diff --git a/lustre/kernel_patches/series/5.14-rhel9.3.series b/lustre/kernel_patches/series/5.14-rhel9.3.series
index c737f7f..3909a2c 100644 (file)
--- a/lustre/kernel_patches/series/5.14-rhel9.3.series
+++ b/lustre/kernel_patches/series/5.14-rhel9.3.series
@@ -2,3 +2,4 @@ block-integrity-allow-optional-integrity-functions-rhel9.3.patch
 block-pass-bio-into-integrity_processing_fn-rhel9.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
 add-and-use-a-per-mapping-stable-writes-flag-rhel9.patch
+virtio_scsi-silence-page-allocation-failure.patch

diff --git a/lustre/kernel_patches/series/5.14-rhel9.4.series b/lustre/kernel_patches/series/5.14-rhel9.4.series
index fbd086b..6169b4a 100644 (file)
--- a/lustre/kernel_patches/series/5.14-rhel9.4.series
+++ b/lustre/kernel_patches/series/5.14-rhel9.4.series
@@ -2,3 +2,4 @@ block-integrity-allow-optional-integrity-functions-rhel9.3.patch
 block-pass-bio-into-integrity_processing_fn-rhel9.patch
 jbd2-revoke-rhashtable-rhel8.4.patch
 add-and-use-a-per-mapping-stable-writes-flag-rhel9.4.patch
+virtio_scsi-silence-page-allocation-failure.patch