[PATCH v14 093/138] iomap: Convert iomap_page_create to take a folio

Matthew Wilcox (Oracle)
2021-07-15T04:51:46Z

This function already assumed it was being passed a head page, so
just formalise that.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
fs/iomap/buffered-io.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index cd5c2f24cb7e..c15a0ac52a32 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -42,11 +42,10 @@ static inline struct iomap_page *to_iomap_page(struct folio *folio)
static struct bio_set iomap_ioend_bioset;

static struct iomap_page *
-iomap_page_create(struct inode *inode, struct page *page)
+iomap_page_create(struct inode *inode, struct folio *folio)
{
- struct folio *folio = page_folio(page);
struct iomap_page *iop = to_iomap_page(folio);
- unsigned int nr_blocks = i_blocks_per_page(inode, page);
+ unsigned int nr_blocks = i_blocks_per_folio(inode, folio);

if (iop || nr_blocks <= 1)
return iop;
@@ -54,9 +53,9 @@ iomap_page_create(struct inode *inode, struct page *page)
iop = kzalloc(struct_size(iop, uptodate, BITS_TO_LONGS(nr_blocks)),
GFP_NOFS | __GFP_NOFAIL);
spin_lock_init(&iop->uptodate_lock);
- if (PageUptodate(page))
+ if (folio_test_uptodate(folio))
bitmap_fill(iop->uptodate, nr_blocks);
- attach_page_private(page, iop);
+ folio_attach_private(folio, iop);
return iop;
}

@@ -235,7 +234,8 @@ iomap_readpage_actor(struct inode *inode, loff_t pos, loff_t length, void *data,
{
struct iomap_readpage_ctx *ctx = data;
struct page *page = ctx->cur_page;
- struct iomap_page *iop = iomap_page_create(inode, page);
+ struct folio *folio = page_folio(page);
+ struct iomap_page *iop = iomap_page_create(inode, folio);
bool same_page = false, is_contig = false;
loff_t orig_pos = pos;
unsigned poff, plen;
@@ -547,7 +547,8 @@ static int
__iomap_write_begin(struct inode *inode, loff_t pos, unsigned len, int flags,
struct page *page, struct iomap *srcmap)
{
- struct iomap_page *iop = iomap_page_create(inode, page);
+ struct folio *folio = page_folio(page);
+ struct iomap_page *iop = iomap_page_create(inode, folio);
loff_t block_size = i_blocksize(inode);
loff_t block_start = round_down(pos, block_size);
loff_t block_end = round_up(pos + len, block_size);
@@ -955,6 +956,7 @@ iomap_page_mkwrite_actor(struct inode *inode, loff_t pos, loff_t length,
void *data, struct iomap *iomap, struct iomap *srcmap)
{
struct page *page = data;
+ struct folio *folio = page_folio(page);
int ret;

if (iomap->flags & IOMAP_F_BUFFER_HEAD) {
@@ -964,7 +966,7 @@ iomap_page_mkwrite_actor(struct inode *inode, loff_t pos, loff_t length,
block_commit_write(page, 0, length);
} else {
WARN_ON_ONCE(!PageUptodate(page));
- iomap_page_create(inode, page);
+ iomap_page_create(inode, folio);
set_page_dirty(page);
}

--
2.30.2