Commit 3a0524dc authored by TARUISI Hiroaki's avatar TARUISI Hiroaki Committed by Chris Mason
Browse files

btrfs: Update existing btrfs_device for renaming device

When we scan devices in a multi-device filesystem, we memorize the original
name.  If the device gets a new name, later scans don't update the
in-kernel structures related to it, and we're not able to mount the

This patch updates device name during scaning.
Signed-off-by: default avatarTARUISI Hiroaki <>
Signed-off-by: default avatarChris Mason <>
parent 1e701a32
......@@ -365,6 +365,7 @@ static noinline int device_list_add(const char *path,
struct btrfs_device *device;
struct btrfs_fs_devices *fs_devices;
u64 found_transid = btrfs_super_generation(disk_super);
char *name;
fs_devices = find_fsid(disk_super->fsid);
if (!fs_devices) {
......@@ -411,6 +412,12 @@ static noinline int device_list_add(const char *path,
device->fs_devices = fs_devices;
} else if (strcmp(device->name, path)) {
name = kstrdup(path, GFP_NOFS);
if (!name)
return -ENOMEM;
device->name = name;
if (found_transid > fs_devices->latest_trans) {
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