Re: [PATCH 0/3] Backport statx(..., NULL, AT_EMPTY_PATH, ...)

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Wed, Sep 18, 2024 at 10:01:18PM +0800, Miao Wang via B4 Relay wrote:
> Commit 0ef625bba6fb ("vfs: support statx(..., NULL, AT_EMPTY_PATH,
> ...)") added support for passing in NULL when AT_EMPTY_PATH is given,
> improving performance when statx is used for fetching stat informantion
> from a given fd, which is especially important for 32-bit platforms.
> This commit also improved the performance when an empty string is given
> by short-circuiting the handling of such paths.
> 
> This series is based on the commits in the Linus’ tree. Sligth
> modifications are applied to the context of the patches for cleanly
> applying.
> 
> Tested-by: Xi Ruoyao <xry111@xry111.site>
> Signed-off-by: Miao Wang <shankerwangmiao@gmail.com>

This really looks like a brand new feature wanting to be backported, so
why does it qualify under the stable kernel rules as fixing something?

I am willing to take some kinds of "fixes performance issues" new
features when the subsystem maintainers agree and ask for it, but that
doesn't seem to be the case here, and so without their approval and
agreement that this is relevant, we can't accept them.

thanks,

greg k-h