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| author | Harald Hoyer <harald@redhat.com> | 2013-11-19 11:36:05 +0100 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-04-10 22:32:50 +0200 |
| commit | 0723a0473fb48a1c93b113a28665b64ce5faf35a (patch) | |
| tree | 59f5dc31dd82e06dc8d836b4544e676c7b85d23d /fs/readdir.c | |
| parent | btrfs: export global block reserve size as space_info (diff) | |
| download | linux-0723a0473fb48a1c93b113a28665b64ce5faf35a.tar.xz linux-0723a0473fb48a1c93b113a28665b64ce5faf35a.zip | |
btrfs: allow mounting btrfs subvolumes with different ro/rw options
Given the following /etc/fstab entries:
/dev/sda3 /mnt/foo btrfs subvol=foo,ro 0 0
/dev/sda3 /mnt/bar btrfs subvol=bar,rw 0 0
you can't issue:
$ mount /mnt/foo
$ mount /mnt/bar
You would have to do:
$ mount /mnt/foo
$ mount -o remount,rw /mnt/foo
$ mount --bind -o remount,ro /mnt/foo
$ mount /mnt/bar
or
$ mount /mnt/bar
$ mount --rw /mnt/foo
$ mount --bind -o remount,ro /mnt/foo
With this patch you can do
$ mount /mnt/foo
$ mount /mnt/bar
$ cat /proc/self/mountinfo
49 33 0:41 /foo /mnt/foo ro,relatime shared:36 - btrfs /dev/sda3 rw,ssd,space_cache
87 33 0:41 /bar /mnt/bar rw,relatime shared:74 - btrfs /dev/sda3 rw,ssd,space_cache
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions