From: Matthew Wilcox (Oracle) <willy@infradead.org>
Date: Sun, 2 May 2021 15:44:44 +0000 (-0400)
Subject: iomap: Convert iomap_write_end_inline to take a folio
X-Git-Tag: iomap-folio-5.17e~7
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=9c4ce08dd21145d10775c6ce6f21330a9558f8d9;p=users%2Fwilly%2Flinux.git

iomap: Convert iomap_write_end_inline to take a folio

This conversion is only safe because iomap only supports writes to inline
data which starts at the beginning of the file.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index d33d49440aa1..b78a456e696f 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -683,16 +683,16 @@ static size_t __iomap_write_end(struct inode *inode, loff_t pos, size_t len,
 }
 
 static size_t iomap_write_end_inline(const struct iomap_iter *iter,
-		struct page *page, loff_t pos, size_t copied)
+		struct folio *folio, loff_t pos, size_t copied)
 {
 	const struct iomap *iomap = &iter->iomap;
 	void *addr;
 
-	WARN_ON_ONCE(!PageUptodate(page));
+	WARN_ON_ONCE(!folio_test_uptodate(folio));
 	BUG_ON(!iomap_inline_data_valid(iomap));
 
-	flush_dcache_page(page);
-	addr = kmap_local_page(page) + pos;
+	flush_dcache_folio(folio);
+	addr = kmap_local_folio(folio, pos);
 	memcpy(iomap_inline_data(iomap, pos), addr, copied);
 	kunmap_local(addr);
 
@@ -710,7 +710,7 @@ static size_t iomap_write_end(struct iomap_iter *iter, loff_t pos, size_t len,
 	size_t ret;
 
 	if (srcmap->type == IOMAP_INLINE) {
-		ret = iomap_write_end_inline(iter, &folio->page, pos, copied);
+		ret = iomap_write_end_inline(iter, folio, pos, copied);
 	} else if (srcmap->flags & IOMAP_F_BUFFER_HEAD) {
 		ret = block_write_end(NULL, iter->inode->i_mapping, pos, len,
 				copied, &folio->page, NULL);