On Wed, Mar 10, 2021 at 10:43:33AM -0800, Linus Torvalds wrote:
> Just a note to the stable tree: this commit has been reverted
> upstream, because it causes a huge performance drop (admittedly on a
> load and setup that may not be all that relevant to most people).
>
> It was applied to 4.4, 4.9
Just a note to the stable tree: this commit has been reverted
upstream, because it causes a huge performance drop (admittedly on a
load and setup that may not be all that relevant to most people).
It was applied to 4.4, 4.9 and 4.12, because the commit it was marked
as "fixing" is from 2012, but
From: Jann Horn
commit 8ff60eb052eeba95cfb3efe16b08c9199f8121cf upstream.
acquire_slab() fails if there is contention on the freelist of the page
(probably because some other CPU is concurrently freeing an object from
the page). In that case, it might make sense to look for a different page
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