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maoxiaochuan
52870ee071
Attempt VMA lock-based page fault handling first, and fall back to the existing mmap_lock-based handling if that fails. The "ebizzy -mTRp" test on Loongson-3A6000 shows that PER_VMA_LOCK can improve the benchmark by about 17.9% (97837.7 to 115430.8). This is the LoongArch variant of "x86/mm: try VMA lock-based page fault handling first". Signed-off-by: Wentao Guan <guanwentao@uniontech.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: maoxiaochuan <maoxiaochuan@loongson.cn>