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(i60-34-119-11.s42.a014.ap.plala.or.jp. [60.34.119.11]) by smtp.gmail.com with ESMTPSA id a5-20020a170902ee8500b001cf51972586sm8302784pld.292.2023.11.27.06.31.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Nov 2023 06:31:08 -0800 (PST) From: Ryusuke Konishi To: Andrew Morton Cc: linux-nilfs@vger.kernel.org, Matthew Wilcox , linux-kernel@vger.kernel.org Subject: [PATCH 09/17] nilfs2: Add nilfs_get_folio() Date: Mon, 27 Nov 2023 23:30:28 +0900 Message-Id: <20231127143036.2425-10-konishi.ryusuke@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231127143036.2425-1-konishi.ryusuke@gmail.com> References: <20231127143036.2425-1-konishi.ryusuke@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: "Matthew Wilcox (Oracle)" Convert nilfs_get_page() to be a wrapper. Also convert nilfs_check_page() to nilfs_check_folio(). Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Ryusuke Konishi --- fs/nilfs2/dir.c | 53 +++++++++++++++++++++++++++++-------------------- 1 file changed, 32 insertions(+), 21 deletions(-) diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c index 89e8a248e571..5c9ca3f0d7f4 100644 --- a/fs/nilfs2/dir.c +++ b/fs/nilfs2/dir.c @@ -107,18 +107,18 @@ static void nilfs_commit_chunk(struct page *page, unlock_page(page); } =20 -static bool nilfs_check_page(struct page *page, char *kaddr) +static bool nilfs_check_folio(struct folio *folio, char *kaddr) { - struct inode *dir =3D page->mapping->host; + struct inode *dir =3D folio->mapping->host; struct super_block *sb =3D dir->i_sb; unsigned int chunk_size =3D nilfs_chunk_size(dir); - unsigned int offs, rec_len; - unsigned int limit =3D PAGE_SIZE; + size_t offs, rec_len; + size_t limit =3D folio_size(folio); struct nilfs_dir_entry *p; char *error; =20 - if ((dir->i_size >> PAGE_SHIFT) =3D=3D page->index) { - limit =3D dir->i_size & ~PAGE_MASK; + if (dir->i_size < folio_pos(folio) + limit) { + limit =3D dir->i_size - folio_pos(folio); if (limit & (chunk_size - 1)) goto Ebadsize; if (!limit) @@ -140,7 +140,7 @@ static bool nilfs_check_page(struct page *page, char *k= addr) if (offs !=3D limit) goto Eend; out: - SetPageChecked(page); + folio_set_checked(folio); return true; =20 /* Too bad, we had an error */ @@ -163,8 +163,8 @@ static bool nilfs_check_page(struct page *page, char *k= addr) error =3D "directory entry across blocks"; bad_entry: nilfs_error(sb, - "bad entry in directory #%lu: %s - offset=3D%lu, inode=3D%lu, rec_le= n=3D%d, name_len=3D%d", - dir->i_ino, error, (page->index << PAGE_SHIFT) + offs, + "bad entry in directory #%lu: %s - offset=3D%lu, inode=3D%lu, rec_le= n=3D%zd, name_len=3D%d", + dir->i_ino, error, (folio->index << PAGE_SHIFT) + offs, (unsigned long)le64_to_cpu(p->inode), rec_len, p->name_len); goto fail; @@ -172,37 +172,48 @@ static bool nilfs_check_page(struct page *page, char = *kaddr) p =3D (struct nilfs_dir_entry *)(kaddr + offs); nilfs_error(sb, "entry in directory #%lu spans the page boundary offset=3D%lu, inode= =3D%lu", - dir->i_ino, (page->index << PAGE_SHIFT) + offs, + dir->i_ino, (folio->index << PAGE_SHIFT) + offs, (unsigned long)le64_to_cpu(p->inode)); fail: - SetPageError(page); + folio_set_error(folio); return false; } =20 -static void *nilfs_get_page(struct inode *dir, unsigned long n, - struct page **pagep) +static void *nilfs_get_folio(struct inode *dir, unsigned long n, + struct folio **foliop) { struct address_space *mapping =3D dir->i_mapping; - struct page *page =3D read_mapping_page(mapping, n, NULL); + struct folio *folio =3D read_mapping_folio(mapping, n, NULL); void *kaddr; =20 - if (IS_ERR(page)) - return page; + if (IS_ERR(folio)) + return folio; =20 - kaddr =3D kmap_local_page(page); - if (unlikely(!PageChecked(page))) { - if (!nilfs_check_page(page, kaddr)) + kaddr =3D kmap_local_folio(folio, 0); + if (unlikely(!folio_test_checked(folio))) { + if (!nilfs_check_folio(folio, kaddr)) goto fail; } =20 - *pagep =3D page; + *foliop =3D folio; return kaddr; =20 fail: - unmap_and_put_page(page, kaddr); + folio_release_kmap(folio, kaddr); return ERR_PTR(-EIO); } =20 +static void *nilfs_get_page(struct inode *dir, unsigned long n, + struct page **pagep) +{ + struct folio *folio; + void *kaddr =3D nilfs_get_folio(dir, n, &folio); + + if (!IS_ERR(kaddr)) + *pagep =3D &folio->page; + return kaddr; +} + /* * NOTE! unlike strncmp, nilfs_match returns 1 for success, 0 for failure. * --=20 2.34.1