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authorLinus Torvalds <torvalds@linux-foundation.org>2020-07-17 10:45:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-07-17 10:45:36 -0700
commitc9ea87dc6c3f48a8de02019fe52472a6cdfedd65 (patch)
treef64718c3392a66d75161e75623305d832977bb9f
parent0dd68a34eccd598109eb845d107a7e8e196745db (diff)
parent1f273e255b285282707fa3246391f66e9dc4178f (diff)
downloadlinux-c9ea87dc6c3f48a8de02019fe52472a6cdfedd65.tar.gz
Merge tag 'block-5.8-2020-07-17' of git://git.kernel.dk/linux-block into master
Pull block fix from Jens Axboe:
 "Single NVMe multipath capacity fix"

* tag 'block-5.8-2020-07-17' of git://git.kernel.dk/linux-block:
  nvme: explicitly update mpath disk capacity on revalidation
-rw-r--r--drivers/nvme/host/core.c1
-rw-r--r--drivers/nvme/host/nvme.h13
2 files changed, 14 insertions, 0 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 8410d03b940d..add040168e67 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1980,6 +1980,7 @@ static int __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id)
 	if (ns->head->disk) {
 		nvme_update_disk_info(ns->head->disk, ns, id);
 		blk_queue_stack_limits(ns->head->disk->queue, ns->queue);
+		nvme_mpath_update_disk_size(ns->head->disk);
 	}
 #endif
 	return 0;
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 2ef8d501e2a8..1de3f9b827aa 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -604,6 +604,16 @@ static inline void nvme_trace_bio_complete(struct request *req,
 		trace_block_bio_complete(ns->head->disk->queue, req->bio);
 }
 
+static inline void nvme_mpath_update_disk_size(struct gendisk *disk)
+{
+	struct block_device *bdev = bdget_disk(disk, 0);
+
+	if (bdev) {
+		bd_set_size(bdev, get_capacity(disk) << SECTOR_SHIFT);
+		bdput(bdev);
+	}
+}
+
 extern struct device_attribute dev_attr_ana_grpid;
 extern struct device_attribute dev_attr_ana_state;
 extern struct device_attribute subsys_attr_iopolicy;
@@ -679,6 +689,9 @@ static inline void nvme_mpath_wait_freeze(struct nvme_subsystem *subsys)
 static inline void nvme_mpath_start_freeze(struct nvme_subsystem *subsys)
 {
 }
+static inline void nvme_mpath_update_disk_size(struct gendisk *disk)
+{
+}
 #endif /* CONFIG_NVME_MULTIPATH */
 
 #ifdef CONFIG_NVM