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(parent: 6b04782) | patch
btrfs: call mnt_drop_write after interrupted subvol deletion
authorDavid Sterba <dsterba@suse.cz>
Fri, 6 Dec 2013 16:51:32 +0000 (17:51 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 20 Dec 2013 15:45:10 +0000 (07:45 -0800)
commit89ec75229a591cd7a3f57c330dc0791b8646b112
tree0074b91e06f2f95ca4f1763e86a3ce8ceafd37a7tree | snapshot
parent6b047827d4cdd57ac7c4f9da2d779d811649566fcommit | diff
btrfs: call mnt_drop_write after interrupted subvol deletion

commit e43f998e47bae27e37e159915625e8d4b130153b upstream.

If btrfs_ioctl_snap_destroy blocks on the mutex and the process is
killed, mnt_write count is unbalanced and leads to unmountable
filesystem.

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/btrfs/ioctl.c diff | blob | history
kernel
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