This is a note to let you know that I've just added the patch titled
nvme: bring back auto-removal of deleted namespaces during sequential scan
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nvme-bring-back-auto-removal-of-deleted-namespaces-d.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e2829e2110dac8021de33076e3bbc469c4c58279
Author: Christoph Hellwig <hch@xxxxxx>
Date: Tue Feb 21 14:02:25 2023 -0800
nvme: bring back auto-removal of deleted namespaces during sequential scan
[ Upstream commit 0dd6fff2aad4e35633fef1ea72838bec5b47559a ]
Bring back the check of the Identify Namespace return value for the
legacy NVMe 1.0-style sequential scanning. While NVMe 1.0 does not
support namespace management, there are "modern" cloud solutions like
Google Cloud Platform that claim the obsolete 1.0 compliance for no
good reason while supporting proprietary sideband namespace management.
Fixes: 1a893c2bfef4 ("nvme: refactor namespace probing")
Reported-by: Nils Hanke <nh@edgeless.systems>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Keith Busch <kbusch@xxxxxxxxxx>
Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Tested-by: Nils Hanke <nh@edgeless.systems>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 8b64211411626..fbed8d1a02ef4 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -38,6 +38,7 @@ struct nvme_ns_info {
bool is_shared;
bool is_readonly;
bool is_ready;
+ bool is_removed;
};
unsigned int admin_timeout = 60;
@@ -1445,16 +1446,8 @@ static int nvme_identify_ns(struct nvme_ctrl *ctrl, unsigned nsid,
error = nvme_submit_sync_cmd(ctrl->admin_q, &c, *id, sizeof(**id));
if (error) {
dev_warn(ctrl->device, "Identify namespace failed (%d)\n", error);
- goto out_free_id;
+ kfree(*id);
}
-
- error = NVME_SC_INVALID_NS | NVME_SC_DNR;
- if ((*id)->ncap == 0) /* namespace not allocated or attached */
- goto out_free_id;
- return 0;
-
-out_free_id:
- kfree(*id);
return error;
}
@@ -1468,6 +1461,13 @@ static int nvme_ns_info_from_identify(struct nvme_ctrl *ctrl,
ret = nvme_identify_ns(ctrl, info->nsid, &id);
if (ret)
return ret;
+
+ if (id->ncap == 0) {
+ /* namespace not allocated or attached */
+ info->is_removed = true;
+ return -ENODEV;
+ }
+
info->anagrpid = id->anagrpid;
info->is_shared = id->nmic & NVME_NS_NMIC_SHARED;
info->is_readonly = id->nsattr & NVME_NS_ATTR_RO;
@@ -4418,6 +4418,7 @@ static void nvme_scan_ns(struct nvme_ctrl *ctrl, unsigned nsid)
{
struct nvme_ns_info info = { .nsid = nsid };
struct nvme_ns *ns;
+ int ret;
if (nvme_identify_ns_descs(ctrl, &info))
return;
@@ -4434,19 +4435,19 @@ static void nvme_scan_ns(struct nvme_ctrl *ctrl, unsigned nsid)
* set up a namespace. If not fall back to the legacy version.
*/
if ((ctrl->cap & NVME_CAP_CRMS_CRIMS) ||
- (info.ids.csi != NVME_CSI_NVM && info.ids.csi != NVME_CSI_ZNS)) {
- if (nvme_ns_info_from_id_cs_indep(ctrl, &info))
- return;
- } else {
- if (nvme_ns_info_from_identify(ctrl, &info))
- return;
- }
+ (info.ids.csi != NVME_CSI_NVM && info.ids.csi != NVME_CSI_ZNS))
+ ret = nvme_ns_info_from_id_cs_indep(ctrl, &info);
+ else
+ ret = nvme_ns_info_from_identify(ctrl, &info);
+
+ if (info.is_removed)
+ nvme_ns_remove_by_nsid(ctrl, nsid);
/*
* Ignore the namespace if it is not ready. We will get an AEN once it
* becomes ready and restart the scan.
*/
- if (!info.is_ready)
+ if (ret || !info.is_ready)
return;
ns = nvme_find_get_ns(ctrl, nsid);
