]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
arch/arm/mm: fix major fault accounting when retrying under per-VMA lock
authorSuren Baghdasaryan <surenb@google.com>
Tue, 23 Jan 2024 06:43:05 +0000 (22:43 -0800)
committerSasha Levin <sashal@kernel.org>
Fri, 15 Mar 2024 14:48:22 +0000 (10:48 -0400)
commitbaa5eee7d3edd0ac2ebeb409a75fadaa07920a0d
tree65e1d095aba4bfbe9a255107860f7e12fb2757ed
parent5acf0e789aeb46f339d8d55452a4dc1e7aa5f16c
arch/arm/mm: fix major fault accounting when retrying under per-VMA lock

[ Upstream commit e870920bbe68e52335a4c31a059e6af6a9a59dbb ]

The change [1] missed ARM architecture when fixing major fault accounting
for page fault retry under per-VMA lock.

The user-visible effects is that it restores correct major fault
accounting that was broken after [2] was merged in 6.7 kernel. The
more detailed description is in [3] and this patch simply adds the
same fix to ARM architecture which I missed in [3].

Add missing code to fix ARM architecture fault accounting.

[1] 46e714c729c8 ("arch/mm/fault: fix major fault accounting when retrying under per-VMA lock")
[2] https://lore.kernel.org/all/20231006195318.4087158-6-willy@infradead.org/
[3] https://lore.kernel.org/all/20231226214610.109282-1-surenb@google.com/

Link: https://lkml.kernel.org/r/20240123064305.2829244-1-surenb@google.com
Fixes: 12214eba1992 ("mm: handle read faults under the VMA lock")
Reported-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/arm/mm/fault.c