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DnTwzjtUdq07zWWChMaR2J/QayhiF+hLDnZbbu76n0fjzVxvFSM5uqjZqP1vJavC9kCwo5mMXfDwkv8rTas6kpavZVSq9/NSJNJkoHehT99mVU3yO1x8DtFsg9Qxdl8zYC/g+RgxLaZAuwIYL9jAkEG59pwGIgg3KtsH3g7roamOvVpt8plwhDDwdhXUQ1YN5ntNWFTBVjyLU6knwlPWR66/3ZNJ7zN/7B9zvPGHol6jPC46mWqq70Obhf/DFX7g9Z6sKk7Ownnq6ut8RSBpOYv66genYs8f4MdXWXsmnwfNsl/6/7xZrvzJqR5fi6Uv+EuX6vS3AmJ7pCfVYNWpb3uyraasljkeNTZECi5Imgakf4YCi2Sj9QGdXrjSjdnt1QI4YW5GLP7h9HTKLdtVL+ZVt2xLyeCU4VVuLnBnOJEjb9/IU4d2BkTGKXHZspGETMxX4 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 2023/12/21 14:59, Yang Shi wrote: > From: Yang Shi > > We avoid allocating THP for temporary stack, even tnough > khugepaged_enter_vma() is called for stack VMAs, it actualy returns > false. So no need to call it in the first place at all. > > Signed-off-by: Yang Shi Reviewed-by: Yin Fengwei > --- > mm/mmap.c | 2 -- > 1 file changed, 2 deletions(-) > > diff --git a/mm/mmap.c b/mm/mmap.c > index b78e83d351d2..2ff79b1d1564 100644 > --- a/mm/mmap.c > +++ b/mm/mmap.c > @@ -2046,7 +2046,6 @@ static int expand_upwards(struct vm_area_struct *vma, unsigned long address) > } > } > anon_vma_unlock_write(vma->anon_vma); > - khugepaged_enter_vma(vma, vma->vm_flags); > mas_destroy(&mas); > validate_mm(mm); > return error; > @@ -2140,7 +2139,6 @@ int expand_downwards(struct vm_area_struct *vma, unsigned long address) > } > } > anon_vma_unlock_write(vma->anon_vma); > - khugepaged_enter_vma(vma, vma->vm_flags); > mas_destroy(&mas); > validate_mm(mm); > return error;