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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: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2023-05-19 16:18:05 -04:00
parent 4f66170119
commit d6bb59a944
3 changed files with 6 additions and 4 deletions
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2
fs/gfs2/bmap.c
View File

@ -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;

6
fs/iomap/buffered-io.c
View File

@ -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,

2
include/linux/iomap.h
View File

@ -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,