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Fri, 07 Jul 2023 22:48:32 -0700 (PDT) MIME-Version: 1.0 References: <20230707165221.4076590-1-fengwei.yin@intel.com> <20230707165221.4076590-2-fengwei.yin@intel.com> In-Reply-To: <20230707165221.4076590-2-fengwei.yin@intel.com> From: Yu Zhao Date: Fri, 7 Jul 2023 23:47:56 -0600 Message-ID: Subject: Re: [RFC PATCH 1/3] mm: add function folio_in_range() To: Yin Fengwei Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, ryan.roberts@arm.com, shy828301@gmail.com, akpm@linux-foundation.org, willy@infradead.org, david@redhat.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Queue-Id: A8015A0009 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: 3obokct6ib39qq88wbp5foe8jrkm51n5 X-HE-Tag: 1688795313-895987 X-HE-Meta: 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 iUmP7L+J /XLyU0+cFN0pyop3gPG7VmAmUTNuhyRmWdG3sQLfqU8XWehzG3c2aQnuCtlx+3VTahOX50AhqTN+LUZghrIsKIZmTs1KjZnnSczEkngfOtFfXpbet+r72iO0m6I2zWzdQtbqNmllS8/3p8zjuLpPLU1qVafCuEuOODZwkeMZh0o10Gm37nLPS9hNpIIvIVBTESHTiWXYTyO3r0byOos1aTA/uSTplt7/oonph31qA2FyfTvkNuRgckRhK7Lsd3ooDe6BS0ICP+WRYb0Llg3KZ/NMAXtIgWvA7jesgx90Z9ugQTCc= 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: On Fri, Jul 7, 2023 at 10:52=E2=80=AFAM Yin Fengwei = wrote: > > It will be used to check whether the folio is mapped to specific > VMA and whether the mapping address of folio is in the range. > > Signed-off-by: Yin Fengwei > --- > mm/internal.h | 26 ++++++++++++++++++++++++++ > 1 file changed, 26 insertions(+) > > diff --git a/mm/internal.h b/mm/internal.h > index f1276d90484ad..66117523d7d71 100644 > --- a/mm/internal.h > +++ b/mm/internal.h > @@ -585,6 +585,32 @@ extern long faultin_vma_page_range(struct vm_area_st= ruct *vma, > bool write, int *locked); > extern bool mlock_future_ok(struct mm_struct *mm, unsigned long flags, > unsigned long bytes); > + > +static inline bool > +folio_in_range(struct folio *folio, struct vm_area_struct *vma, > + unsigned long start, unsigned long end) Is there a caller that's not "folio_in_range(folio, vma, vma->vm_start, vma->vm_end)"? If not, then just "folio_within_vma(folio, vma)" or a wrapper on top of folio_in_range().