[PATCH 1/1] arch/arm/mm: fix major fault accounting when retrying under per-VMA lock
Suren Baghdasaryan
surenb at google.com
Mon Jan 22 22:43:05 PST 2024
The change [1] missed ARM architecture when fixing major fault accounting
for page fault retry under per-VMA lock. Add missing code to fix ARM
architecture fault accounting.
[1] 46e714c729c8 ("arch/mm/fault: fix major fault accounting when retrying under per-VMA lock")
Fixes: 12214eba1992 ("mm: handle read faults under the VMA lock")
Reported-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
Signed-off-by: Suren Baghdasaryan <surenb at google.com>
---
arch/arm/mm/fault.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index e96fb40b9cc3..07565b593ed6 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -298,6 +298,8 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
goto done;
}
count_vm_vma_lock_event(VMA_LOCK_RETRY);
+ if (fault & VM_FAULT_MAJOR)
+ flags |= FAULT_FLAG_TRIED;
/* Quick path to respond to signals */
if (fault_signal_pending(fault, regs)) {
--
2.43.0.429.g432eaa2c6b-goog
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