[PATCH 16/21] iomap: Convert iomap_write_end_inline to take a folio

Matthew Wilcox (Oracle)
2021-11-01T21:09:53Z

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>
---
fs/iomap/buffered-io.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 6df8fdbb1951..6862487f4067 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -675,16 +675,16 @@ 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);

@@ -703,7 +703,7 @@ 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, 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, page, NULL);
--
2.33.0