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Btrfs: fix overlap of fs_info::flags values

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Because the values of BTRFS_FS_EXCL_OP and BTRFS_FS_QUOTA_OVERRIDE overlap,
we should change the value.

First, BTRFS_FS_EXCL_OP was set to 14.

  commit 171938e528 ("btrfs: track exclusive filesystem operation in flags")

Next, the value of BTRFS_FS_QUOTA_OVERRIDE was set to 14.

  commit f29efe2921 ("btrfs: add quota override flag to enable quota override for CAP_SYS_RESOURCE")

As a result, the value 14 overlapped, by accident.
This problem is solved by defining the value of BTRFS_FS_EXCL_OP as 16,
the flags are internal.

Fixes: f29efe2921 ("btrfs: add quota override flag to enable quota override for CAP_SYS_RESOURCE")
CC: stable@vger.kernel.org # 4.13+
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ minimize the change, update only BTRFS_FS_EXCL_OP ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Tsutomu Itoh 2017-10-04 11:05:17 +09:00 committed by David Sterba
parent 2d8ce70a08
commit 69ad59767d
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/ctree.h
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@ -721,7 +721,7 @@ struct btrfs_delayed_root;
* Indicate that a whole-filesystem exclusive operation is running
* (device replace, resize, device add/delete, balance)
*/
#define BTRFS_FS_EXCL_OP 14
#define BTRFS_FS_EXCL_OP 16
struct btrfs_fs_info {
u8 fsid[BTRFS_FSID_SIZE];