On Thu, Oct 13, 2016 at 07:58:51PM +0000, Vineeth Remanan Pillai wrote:
> filename_lookup used to return success for non-existing file when called
> with LOOKUP_PARENT flag. This behaviour was changed with
> commit 8bcb77fabd7c ("namei: split off filename_lookupat()
> with LOOKUP_PARENT")
> 
> The above patch split parent lookup functionality to a different function
> filename_parentat and changed all calls to filename_lookup(LOOKUP_PARENT)
> to the new function filename_parentat. But functions like kern_path which
> passed the flags directly to filename_lookup regressed due to this.
> 
> This patch aims to fix the regressed behaviour by calling
> filename_parentat from filename_lookup if the flags contain LOOKUP_PARENT.

What callers shows te problems?  That's probaby were the fix need to got
in, and even if not that's still part of a good bug report.

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