Commit a77f580a authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle)
Browse files

fs: Convert simple_readpage to simple_read_folio 



This is a full folio conversion; it is prepared to handle folios of
arbitrary size.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
parent f132ab7d

fs/libfs.c

+7 −7
Original line number Diff line number Diff line
@@ -539,12 +539,12 @@ int simple_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, 
}

EXPORT_SYMBOL(simple_setattr);



static int simple_readpage(struct file *file, struct page *page)

static int simple_read_folio(struct file *file, struct folio *folio)

{

	clear_highpage(page);

	flush_dcache_page(page);

	SetPageUptodate(page);

	unlock_page(page);

	folio_zero_range(folio, 0, folio_size(folio));

	flush_dcache_folio(folio);

	folio_mark_uptodate(folio);

	folio_unlock(folio);

	return 0;

}
@@ -592,7 +592,7 @@ EXPORT_SYMBOL(simple_write_begin); 
 * should extend on what's done here with a call to mark_inode_dirty() in the

 * case that i_size has changed.

 *

 * Use *ONLY* with simple_readpage()

 * Use *ONLY* with simple_read_folio()

 */

static int simple_write_end(struct file *file, struct address_space *mapping,

			loff_t pos, unsigned len, unsigned copied,
@@ -628,7 +628,7 @@ static int simple_write_end(struct file *file, struct address_space *mapping, 
 * Provides ramfs-style behavior: data in the pagecache, but no writeback.

 */

const struct address_space_operations ram_aops = {

	.readpage	= simple_readpage,

	.read_folio	= simple_read_folio,

	.write_begin	= simple_write_begin,

	.write_end	= simple_write_end,

	.dirty_folio	= noop_dirty_folio,