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btrfs: update the comment of btrfs_control_ioctl() 

Btrfsctl was removed in 2012, now the function btrfs_control_ioctl()
is only used for devices ioctls. So update the comment.

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Su Yue <Damenly_Su@gmx.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Su Yue 2020-02-04 12:51:56 +08:00 committed by David Sterba
parent 0c89138970
commit cfe953c824
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/super.c
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@ -2203,7 +2203,7 @@ static int btrfs_control_open(struct inode *inode, struct file *file)
}
/*
* used by btrfsctl to scan devices when no FS is mounted
* Used by /dev/btrfs-control for devices ioctls.
*/
static long btrfs_control_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)