From d1bd0b4ebfe0521964e6937195bd2f76866660c7 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Wed, 3 Nov 2021 14:05:47 -0400 Subject: fs/buffer: Convert __block_write_begin_int() to take a folio There are no plans to convert buffer_head infrastructure to use large folios, but __block_write_begin_int() is called from iomap, and it's more convenient and less error-prone if we pass in a folio from iomap. It also has a nice saving of almost 200 bytes of code from removing repeated calls to compound_head(). Signed-off-by: Matthew Wilcox (Oracle) Reviewed-by: Christoph Hellwig Reviewed-by: Darrick J. Wong --- fs/iomap/buffered-io.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'fs/iomap') diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 71a36ae120ee..ecb65167715b 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -603,6 +603,7 @@ static int iomap_write_begin(const struct iomap_iter *iter, loff_t pos, const struct iomap_page_ops *page_ops = iter->iomap.page_ops; const struct iomap *srcmap = iomap_iter_srcmap(iter); struct page *page; + struct folio *folio; int status = 0; BUG_ON(pos + len > iter->iomap.offset + iter->iomap.length); @@ -624,11 +625,12 @@ static int iomap_write_begin(const struct iomap_iter *iter, loff_t pos, status = -ENOMEM; goto out_no_page; } + folio = page_folio(page); if (srcmap->type == IOMAP_INLINE) status = iomap_write_begin_inline(iter, page); else if (srcmap->flags & IOMAP_F_BUFFER_HEAD) - status = __block_write_begin_int(page, pos, len, NULL, srcmap); + status = __block_write_begin_int(folio, pos, len, NULL, srcmap); else status = __iomap_write_begin(iter, pos, len, page); @@ -960,11 +962,12 @@ EXPORT_SYMBOL_GPL(iomap_truncate_page); static loff_t iomap_page_mkwrite_iter(struct iomap_iter *iter, struct page *page) { + struct folio *folio = page_folio(page); loff_t length = iomap_length(iter); int ret; if (iter->iomap.flags & IOMAP_F_BUFFER_HEAD) { - ret = __block_write_begin_int(page, iter->pos, length, NULL, + ret = __block_write_begin_int(folio, iter->pos, length, NULL, &iter->iomap); if (ret) return ret; -- cgit v1.2.3