Commit d6bb59a9 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle)
Browse files

iomap: Create large folios in the buffered write path 



Use the size of the write as a hint for the size of the folio to create.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarDarrick J. Wong <djwong@kernel.org>
parent 4f661701

fs/gfs2/bmap.c

+1 −1
Original line number Diff line number Diff line
@@ -971,7 +971,7 @@ gfs2_iomap_get_folio(struct iomap_iter *iter, loff_t pos, unsigned len) 
	if (status)

		return ERR_PTR(status);



	folio = iomap_get_folio(iter, pos);

	folio = iomap_get_folio(iter, pos, len);

	if (IS_ERR(folio))

		gfs2_trans_end(sdp);

	return folio;

fs/iomap/buffered-io.c

+4 −2
Original line number Diff line number Diff line
@@ -461,16 +461,18 @@ EXPORT_SYMBOL_GPL(iomap_is_partially_uptodate); 
 * iomap_get_folio - get a folio reference for writing

 * @iter: iteration structure

 * @pos: start offset of write

 * @len: Suggested size of folio to create.

 *

 * Returns a locked reference to the folio at @pos, or an error pointer if the

 * folio could not be obtained.

 */

struct folio *iomap_get_folio(struct iomap_iter *iter, loff_t pos)

struct folio *iomap_get_folio(struct iomap_iter *iter, loff_t pos, size_t len)

{

	fgf_t fgp = FGP_WRITEBEGIN | FGP_NOFS;



	if (iter->flags & IOMAP_NOWAIT)

		fgp |= FGP_NOWAIT;

	fgp |= fgf_set_order(len);



	return __filemap_get_folio(iter->inode->i_mapping, pos >> PAGE_SHIFT,

			fgp, mapping_gfp_mask(iter->inode->i_mapping));
@@ -597,7 +599,7 @@ static struct folio *__iomap_get_folio(struct iomap_iter *iter, loff_t pos, 
	if (folio_ops && folio_ops->get_folio)

		return folio_ops->get_folio(iter, pos, len);

	else

		return iomap_get_folio(iter, pos);

		return iomap_get_folio(iter, pos, len);

}



static void __iomap_put_folio(struct iomap_iter *iter, loff_t pos, size_t ret,

include/linux/iomap.h

+1 −1
Original line number Diff line number Diff line
@@ -261,7 +261,7 @@ int iomap_file_buffered_write_punch_delalloc(struct inode *inode, 
int iomap_read_folio(struct folio *folio, const struct iomap_ops *ops);

void iomap_readahead(struct readahead_control *, const struct iomap_ops *ops);

bool iomap_is_partially_uptodate(struct folio *, size_t from, size_t count);

struct folio *iomap_get_folio(struct iomap_iter *iter, loff_t pos);

struct folio *iomap_get_folio(struct iomap_iter *iter, loff_t pos, size_t len);

bool iomap_release_folio(struct folio *folio, gfp_t gfp_flags);

void iomap_invalidate_folio(struct folio *folio, size_t offset, size_t len);

int iomap_file_unshare(struct inode *inode, loff_t pos, loff_t len,