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dkim=none; spf=pass (imf19.hostedemail.com: domain of anshuman.khandual@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=anshuman.khandual@arm.com; dmarc=pass (policy=none) header.from=arm.com X-Rspamd-Server: rspam03 X-Stat-Signature: qyp39atu36bi8gk7c57n1niwpa4rpane X-HE-Tag: 1662015034-55667 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 8/30/22 16:16, Kefeng Wang wrote: > Squash the __soft_offline_page() into soft_offline_in_use_page() and kill > __soft_offline_page(). > > Signed-off-by: Kefeng Wang > Reviewed-by: Miaohe Lin > Acked-by: Naoya Horiguchi Reviewed-by: Anshuman Khandual > --- > v2: update hpage when try_to_split_thp_page() success > > mm/memory-failure.c | 25 ++++++++++--------------- > 1 file changed, 10 insertions(+), 15 deletions(-) > > diff --git a/mm/memory-failure.c b/mm/memory-failure.c > index b61f2de9f2a1..df54a6bc9bef 100644 > --- a/mm/memory-failure.c > +++ b/mm/memory-failure.c > @@ -2434,11 +2434,11 @@ static bool isolate_page(struct page *page, struct list_head *pagelist) > } > > /* > - * __soft_offline_page handles hugetlb-pages and non-hugetlb pages. > + * soft_offline_in_use_page handles hugetlb-pages and non-hugetlb pages. > * If the page is a non-dirty unmapped page-cache page, it simply invalidates. > * If the page is mapped, it migrates the contents over. > */ > -static int __soft_offline_page(struct page *page) > +static int soft_offline_in_use_page(struct page *page) > { > long ret = 0; > unsigned long pfn = page_to_pfn(page); > @@ -2451,6 +2451,14 @@ static int __soft_offline_page(struct page *page) > .gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL, > }; > > + if (!huge && PageTransHuge(hpage)) { > + if (try_to_split_thp_page(page)) { > + pr_info("soft offline: %#lx: thp split failed\n", pfn); > + return -EBUSY; > + } > + hpage = page; > + } > + > lock_page(page); > if (!PageHuge(page)) > wait_on_page_writeback(page); > @@ -2500,19 +2508,6 @@ static int __soft_offline_page(struct page *page) > return ret; > } > > -static int soft_offline_in_use_page(struct page *page) > -{ > - struct page *hpage = compound_head(page); > - > - if (!PageHuge(page) && PageTransHuge(hpage)) > - if (try_to_split_thp_page(page) < 0) { > - pr_info("soft offline: %#lx: thp split failed\n", > - page_to_pfn(page)); > - return -EBUSY; > - } > - return __soft_offline_page(page); > -} > - > static void put_ref_page(struct page *page) > { > if (page)