Messages in this thread Patch in this message | | | From | Huacai Chen <> | Subject | [PATCH] LoongArch: mm: avoid unnecessary page fault retires on shared memory types | Date | Mon, 15 Aug 2022 12:05:54 +0800 |
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Commit d92725256b4f22d0 ("mm: avoid unnecessary page fault retires on shared memory types") modifies do_page_fault() to handle the VM_FAULT_ COMPLETED case, but forget to change for LoongArch, so fix it as other architectures does.
Fixes: d92725256b4f22d0 ("mm: avoid unnecessary page fault retires on shared memory types") Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> --- arch/loongarch/mm/fault.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/loongarch/mm/fault.c b/arch/loongarch/mm/fault.c index 605579b19a00..1ccd53655cab 100644 --- a/arch/loongarch/mm/fault.c +++ b/arch/loongarch/mm/fault.c @@ -216,6 +216,10 @@ static void __kprobes __do_page_fault(struct pt_regs *regs, return; } + /* The fault is fully completed (including releasing mmap lock) */ + if (fault & VM_FAULT_COMPLETED) + return; + if (unlikely(fault & VM_FAULT_RETRY)) { flags |= FAULT_FLAG_TRIED; -- 2.31.1
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