On Mon, Mar 10, 2025 at 01:16:45PM +0100, Alexei Starovoitov wrote:
> From 69b3d1631645c82d9d88f17fb01184d24034df2b Mon Sep 17 00:00:00 2001
> From: Vlastimil Babka <vbabka@xxxxxxx>
> Date: Mon, 10 Mar 2025 11:57:52 +0100
> Subject: [PATCH] mm: Fix the flipped condition in gfpflags_allow_spinning()
>
> The function gfpflags_allow_spinning() has a bug that makes it return
> the opposite result than intended. This could contribute to deadlocks as
> usage profilerates, for now it was noticed as a performance regression
> due to try_charge_memcg() not refilling memcg stock when it could. Fix
> the flipped condition.
>
> Fixes: 97769a53f117 ("mm, bpf: Introduce try_alloc_pages() for
> opportunistic page allocation")
> Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
> Closes: https://lore.kernel.org/oe-lkp/202503101254.cfd454df-lkp@xxxxxxxxx
>
> Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Acked-by: Shakeel Butt <shakeel.butt@xxxxxxxxx>
