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bh=eSnJIqrmDBfiUZ2lTDPQQviv4aUqu7JK0ZIDBmEMPxM=; b=nC0r5sUVzIRiJpnswWiNK0G9qD gbWinvFn76fPzPyO2AYFe6P2bPGEraB5Lry8vpnkhAIDfgizNJeGHHC/wA7vEZl+VJuj9q053YRJj Q7/Rs/mu624JNLNmlwLnlojNX7FMRqbtfBzyr8HCvguJVx2n9L0HQqn3L/msA8uKXUVFHBLn5DUl1 OkbRFCaJQhdiOxVgvVHCF3kkgXwFET9MO0htFhIkqeGL9yaeSX9F2YFI7Zx8AU5kphQ5b92Itsg9q kW6HVRv7UBcLOh92smX7vFc+LDLif69ynF8rlT4i2IWeVXoVa5afpK30AYzevIdvTJDZk//ZZrHat ZFLKI/FQ==; Received: from willy by casper.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tnKJt-0000000FvUR-03iA; Wed, 26 Feb 2025 16:31:37 +0000 From: "Matthew Wilcox (Oracle)" To: Muchun Song Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org Subject: [PATCH 2/2] hugetlb: Convert adjust_range_hwpoison() to take a folio Date: Wed, 26 Feb 2025 16:31:30 +0000 Message-ID: <20250226163131.3795869-2-willy@infradead.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250226163131.3795869-1-willy@infradead.org> References: <20250226163131.3795869-1-willy@infradead.org> MIME-Version: 1.0 X-Rspam-User: X-Rspamd-Queue-Id: 631F4C002D X-Rspamd-Server: rspam12 X-Stat-Signature: y5huqcsojrkrb6c1u96uzpcpwnj7t8pk X-HE-Tag: 1740587498-419655 X-HE-Meta: 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 dP8118/l SjCuuB11XjANUsAwCfqeZPNMgxg3bkypPdYm5wAq1FnVHhumQdBLsGOnP8XPouKnwEe4nhCor4zlNNJ794dv3JVTNzCvlyCEZFkMnot1q5eZbQfyb6SBjMgQ0BL5FZf4fg8Y+hSTXdHjXBfyu3xvIjNll2AlJ+X4hk4lOC9pQf+sbv8kKaPnqh22azzCg4Fun5g8TfQCX190xKDDNpxDLDncLRwVzrrwKHFS3TZns/SVy4ldoa4B2Pk0t7pZ1cpWqL8aNplVuMxClMg8+ddofRDZXBfFsaNSCBc39 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: Remove a use of folio->page by passing the folio into adjust_range_hwpoison(). We need to convert to a page eventually, but that can happen inside adjust_range_hwpoison(). Signed-off-by: Matthew Wilcox (Oracle) --- fs/hugetlbfs/inode.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index a427d41fbca0..a6fcaf8317a0 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -193,19 +193,21 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr, } /* - * Someone wants to read @bytes from a HWPOISON hugetlb @page from @offset. + * Someone wants to read @bytes from a HWPOISON hugetlb @folio from @offset. * Returns the maximum number of bytes one can read without touching the 1st raw - * HWPOISON subpage. + * HWPOISON page. * * The implementation borrows the iteration logic from copy_page_to_iter*. */ -static size_t adjust_range_hwpoison(struct page *page, size_t offset, size_t bytes) +static size_t adjust_range_hwpoison(struct folio *folio, size_t offset, + size_t bytes) { + struct page *page; size_t n = 0; size_t res = 0; - /* First subpage to start the loop. */ - page = nth_page(page, offset / PAGE_SIZE); + /* First page to start the loop. */ + page = folio_page(folio, offset / PAGE_SIZE); offset %= PAGE_SIZE; while (1) { if (is_raw_hwpoison_page_in_hugepage(page)) @@ -278,10 +280,10 @@ static ssize_t hugetlbfs_read_iter(struct kiocb *iocb, struct iov_iter *to) else { /* * Adjust how many bytes safe to read without - * touching the 1st raw HWPOISON subpage after + * touching the 1st raw HWPOISON page after * offset. */ - want = adjust_range_hwpoison(&folio->page, offset, nr); + want = adjust_range_hwpoison(folio, offset, nr); if (want == 0) { folio_put(folio); retval = -EIO;