xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

btrfs: create sprout should rename fsid on the sysfs as well

Browse Source 
Creating sprout will change the fsid of the mounted root.
do the same on the sysfs as well.

reproducer:
 mount /dev/sdb /btrfs (seed disk)
 btrfs dev add /dev/sdc /btrfs
 mount -o rw,remount /btrfs
 btrfs dev del /dev/sdb /btrfs
 mount /dev/sdb /btrfs

Error:
kobject_add_internal failed for fe350492-dc28-4051-a601-e017b17e6145 with -EEXIST, don't try to register things with the same name in the same directory.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Anand Jain
2014-06-03 11:36:03 +08:00
committed by Chris Mason
parent 49c6f736f3
commit b2373f255c
2 changed files with 10 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
include/uapi/linux/btrfs.h
View File

@@ -38,6 +38,7 @@ struct btrfs_ioctl_vol_args {
#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
#define BTRFS_FSID_SIZE 16
#define BTRFS_UUID_SIZE 16
#define BTRFS_UUID_UNPARSED_SIZE 37
#define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0)