On 4.01.19 г. 15:25 ч., Greg Kroah-Hartman wrote:
> When calling debugfs functions, there is no need to ever check the
> return value. The function can work or not, but the code logic should
> never do something different based on this.
>
> Cc: Chris Mason <clm@xxxxxx>
> Cc: Josef Bacik <josef@xxxxxxxxxxxxxx>
> Cc: David Sterba <dsterba@xxxxxxxx>
> Cc: linux-btrfs@xxxxxxxxxxxxxxx
> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> ---
> fs/btrfs/sysfs.c | 10 ++--------
> 1 file changed, 2 insertions(+), 8 deletions(-)
>
> Meta-comment, why is there a btrfs debugfs directory at all? All you
> have here is a single "test" file that doesn't do anything except expose
> a variable that never changes. What is this directory and single file
> for? Can I just delete the whole thing?
>
git blame is your friend - 1bae30982bc8 ("btrfs: add simple debugfs
interface")
Apparently David had an idea to do something but it never materialized,
imo the debugfs bits could be removed from sysfs.c
