From 7436dc2adeff1c7f018e8b48d049c81a7f4099d6 Mon Sep 17 00:00:00 2001 From: Anthony Iliopoulos Date: Mon, 29 Jul 2019 14:40:40 +0200 Subject: nvme-multipath: revalidate nvme_ns_head gendisk in nvme_validate_ns [ Upstream commit fab7772bfbcfe8fb8e3e352a6a8fcaf044cded17 ] When CONFIG_NVME_MULTIPATH is set, only the hidden gendisk associated with the per-controller ns is run through revalidate_disk when a rescan is triggered, while the visible blockdev never gets its size (bdev->bd_inode->i_size) updated to reflect any capacity changes that may have occurred. This prevents online resizing of nvme block devices and in extension of any filesystems atop that will are unable to expand while mounted, as userspace relies on the blockdev size for obtaining the disk capacity (via BLKGETSIZE/64 ioctls). Fix this by explicitly revalidating the actual namespace gendisk in addition to the per-controller gendisk, when multipath is enabled. Signed-off-by: Anthony Iliopoulos Reviewed-by: Sagi Grimberg Reviewed-by: Johannes Thumshirn Signed-off-by: Christoph Hellwig Signed-off-by: Sasha Levin --- drivers/nvme/host/core.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/nvme') diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index e26d1191c5ad..d838a300ae77 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1557,6 +1557,7 @@ static void __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); + revalidate_disk(ns->head->disk); } #endif } -- cgit v1.2.3