| Message ID | 1410432289-21745-1-git-send-email-fdmanana@suse.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index a010c44..a46c169 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -332,6 +332,9 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg) goto out_drop; } else { + ret = btrfs_set_prop(inode, "btrfs.compression", NULL, 0, 0); + if (ret && ret != -ENODATA) + goto out_drop; ip->flags &= ~(BTRFS_INODE_COMPRESS | BTRFS_INODE_NOCOMPRESS); }
The behaviour of a 'chattr -c' consists of getting the current flags, clearing the FS_COMPR_FL bit and then sending the result to the set flags ioctl - this means the bit FS_NOCOMP_FL isn't set in the flags passed to the ioctl. This results in the compression property not being cleared from the inode - it was cleared only if the bit FS_NOCOMP_FL was set in the received flags. Reproducer: $ mkfs.btrfs -f /dev/sdd $ mount /dev/sdd /mnt && cd /mnt $ mkdir a $ chattr +c a $ touch a/file $ lsattr a/file --------c------- a/file $ chattr -c a $ touch a/file2 $ lsattr a/file2 --------c------- a/file2 $ lsattr -d a ---------------- a Reported-by: Andreas Schneider <asn@cryptomilk.org> Signed-off-by: Filipe Manana <fdmanana@suse.com> --- V2: Ensure BTRFS_INODE_NOCOMPRESS isn't set (unless the bit FS_NOCOMP_FL is set). fs/btrfs/ioctl.c | 3 +++ 1 file changed, 3 insertions(+)