Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

[karo-tx-linux.git] / fs / btrfs / ioctl.c

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index ffb48d6c54334ab8fe0d29ae4d69cfa1b22d613c..2616f7ed47996a21df8b0c5de224c4b6c1aebf70 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -81,6 +81,13 @@ static unsigned int btrfs_flags_to_ioctl(unsigned int flags)
                iflags |= FS_NOATIME_FL;
        if (flags & BTRFS_INODE_DIRSYNC)
                iflags |= FS_DIRSYNC_FL;
+       if (flags & BTRFS_INODE_NODATACOW)
+               iflags |= FS_NOCOW_FL;
+
+       if ((flags & BTRFS_INODE_COMPRESS) && !(flags & BTRFS_INODE_NOCOMPRESS))
+               iflags |= FS_COMPR_FL;
+       else if (flags & BTRFS_INODE_NOCOMPRESS)
+               iflags |= FS_NOCOMP_FL;
 
        return iflags;
 }
@@ -144,16 +151,13 @@ static int check_flags(unsigned int flags)
        if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
                      FS_NOATIME_FL | FS_NODUMP_FL | \
                      FS_SYNC_FL | FS_DIRSYNC_FL | \
-                     FS_NOCOMP_FL | FS_COMPR_FL | \
-                     FS_NOCOW_FL | FS_COW_FL))
+                     FS_NOCOMP_FL | FS_COMPR_FL |
+                     FS_NOCOW_FL))
                return -EOPNOTSUPP;
 
        if ((flags & FS_NOCOMP_FL) && (flags & FS_COMPR_FL))
                return -EINVAL;
 
-       if ((flags & FS_NOCOW_FL) && (flags & FS_COW_FL))
-               return -EINVAL;
-
        return 0;
 }
 
@@ -218,6 +222,10 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
                ip->flags |= BTRFS_INODE_DIRSYNC;
        else
                ip->flags &= ~BTRFS_INODE_DIRSYNC;
+       if (flags & FS_NOCOW_FL)
+               ip->flags |= BTRFS_INODE_NODATACOW;
+       else
+               ip->flags &= ~BTRFS_INODE_NODATACOW;
 
        /*
         * The COMPRESS flag can only be changed by users, while the NOCOMPRESS
@@ -230,11 +238,9 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
        } else if (flags & FS_COMPR_FL) {
                ip->flags |= BTRFS_INODE_COMPRESS;
                ip->flags &= ~BTRFS_INODE_NOCOMPRESS;
+       } else {
+               ip->flags &= ~(BTRFS_INODE_COMPRESS | BTRFS_INODE_NOCOMPRESS);
        }
-       if (flags & FS_NOCOW_FL)
-               ip->flags |= BTRFS_INODE_NODATACOW;
-       else if (flags & FS_COW_FL)
-               ip->flags &= ~BTRFS_INODE_NODATACOW;
 
        trans = btrfs_join_transaction(root, 1);
        BUG_ON(IS_ERR(trans));