[PATCH v15 14/17] iomap: Convert iomap_read_inline_data to take a folio
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: 2021-07-19 22:23:47
Also in:
linux-fsdevel, linux-mm
Subsystem:
filesystems (vfs and infrastructure), filesystems [iomap], the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
Inline data is restricted to being less than a page in size, so we don't need to handle multi-page folios. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Darrick J. Wong <djwong@kernel.org> --- fs/iomap/buffered-io.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 4b02337009bc..23ee86aba9d6 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c@@ -194,25 +194,25 @@ struct iomap_readpage_ctx { struct readahead_control *rac; }; -static void -iomap_read_inline_data(struct inode *inode, struct page *page, +static void iomap_read_inline_data(struct inode *inode, struct folio *folio, struct iomap *iomap) { size_t size = i_size_read(inode); void *addr; - if (PageUptodate(page)) + if (folio_test_uptodate(folio)) return; - BUG_ON(page_has_private(page)); - BUG_ON(page->index); + BUG_ON(folio_test_private(folio)); + BUG_ON(folio->index); + BUG_ON(folio_multi(folio)); BUG_ON(size > PAGE_SIZE - offset_in_page(iomap->inline_data)); - addr = kmap_atomic(page); + addr = kmap_local_folio(folio, 0); memcpy(addr, iomap->inline_data, size); memset(addr + size, 0, PAGE_SIZE - size); - kunmap_atomic(addr); - SetPageUptodate(page); + kunmap_local(addr); + folio_mark_uptodate(folio); } static inline bool iomap_block_needs_zeroing(struct inode *inode,
@@ -237,7 +237,7 @@ iomap_readpage_actor(struct inode *inode, loff_t pos, loff_t length, void *data, if (iomap->type == IOMAP_INLINE) { WARN_ON_ONCE(pos); - iomap_read_inline_data(inode, &folio->page, iomap); + iomap_read_inline_data(inode, folio, iomap); return PAGE_SIZE; }
@@ -616,7 +616,7 @@ static int iomap_write_begin(struct inode *inode, loff_t pos, size_t len, page = folio_file_page(folio, pos >> PAGE_SHIFT); if (srcmap->type == IOMAP_INLINE) - iomap_read_inline_data(inode, page, srcmap); + iomap_read_inline_data(inode, folio, srcmap); else if (iomap->flags & IOMAP_F_BUFFER_HEAD) status = __block_write_begin_int(page, pos, len, NULL, srcmap); else
--
2.30.2