On Fri, 6 Oct 2017 06:54:34 -0700 "J. William Campbell" jwilliamcampbell@comcast.net wrote:

Hi Marek,         If the searched key is not found, isn't it an error to use the res value AT ALL? Setting it to 0 may cover up the warning, but the function shouldn't actually use it for anything. If it does, it is modifying an element that doesn't match the search key.

Hi Bill,

the res variable is just an indicator if an error occured. In these functions if no key is found, it is not an error (for example if no key is found in btrfs_readdir, it just means the directory is empty, which is not an error).

Marek

Best Regards, Bill Campbell