Re: [PATCH 5.4.y 0/3] Backport series: "permit write-sealed memfd read-only shared mappings"

[Isaac Manjarres]

On Wed, Jul 30, 2025 at 02:27:29AM +0100, Matthew Wilcox wrote:
> On Tue, Jul 29, 2025 at 05:58:05PM -0700, Isaac J. Manjarres wrote:
> > Lorenzo's series [2] fixed that issue and was merged in kernel version
> > 6.7, but was not backported to older kernels. So, this issue is still
> > present on kernels 5.4, 5.10, 5.15, 6.1, and 6.6.
> > 
> > This series backports Lorenzo's series to the 5.4 kernel.
> 
> That's not how this works.  First you do 6.6, then 6.1, then 5.15 ...

Hey Matthew,

Thanks for pointing that out. I'm sorry about the confusion. I did
prepare backports for the other kernel versions too, and the intent
was to send them together. However, my machine only sent the 5.4
version of the patches and not the rest.

I sent the patches for each kernel version and here are the relevant
links:

6.6: https://lore.kernel.org/all/20250730015152.29758-1-isaacmanjarres@xxxxxxxxxx/
6.1: https://lore.kernel.org/all/20250730015247.30827-1-isaacmanjarres@xxxxxxxxxx/
5.15: https://lore.kernel.org/all/20250730015337.31730-1-isaacmanjarres@xxxxxxxxxx/
5.10: https://lore.kernel.org/all/20250730015406.32569-1-isaacmanjarres@xxxxxxxxxx/

> Otherwise somebody might upgrade from 5.4 to 6.1 and see a regression.

Understood; sorry again for the confusion.

Thanks,
Isaac