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| author |   David Sterba <dsterba@suse.com> | 2018-06-20 19:51:28 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-07-13 14:55:46 +0200 |
| commit | 20c5bbc640cdf8e23947990ab98f5ba950a3e1b0 (patch) | |
| tree | 18582dc8644adb26d941e2e74fb4cfc53bed0986 /fs/btrfs/volumes.c | |
| parent | Btrfs: fix mount failure when qgroup rescan is in progress (diff) | |
| download | linux-dev-20c5bbc640cdf8e23947990ab98f5ba950a3e1b0.tar.xz linux-dev-20c5bbc640cdf8e23947990ab98f5ba950a3e1b0.zip | |
btrfs: restore uuid_mutex in btrfs_open_devices
Commit 542c5908abfe84f7b4c1 ("btrfs: replace uuid_mutex by
device_list_mutex in btrfs_open_devices") switched to device_list_mutex
as we need that for the device list traversal, but we also need
uuid_mutex to protect access to fs_devices::opened to be consistent with
other users of that.
Fixes: 542c5908abfe84f7b4c1 ("btrfs: replace uuid_mutex by device_list_mutex in btrfs_open_devices")
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/btrfs/volumes.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index e034ad9e23b4..1da162928d1a 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1146,6 +1146,7 @@ int btrfs_open_devices(struct btrfs_fs_devices *fs_devices, { int ret; + mutex_lock(&uuid_mutex); mutex_lock(&fs_devices->device_list_mutex); if (fs_devices->opened) { fs_devices->opened++; @@ -1155,6 +1156,7 @@ int btrfs_open_devices(struct btrfs_fs_devices *fs_devices, ret = open_fs_devices(fs_devices, flags, holder); } mutex_unlock(&fs_devices->device_list_mutex); + mutex_unlock(&uuid_mutex); return ret; } |