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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: Matthew Wilcox (Oracle) <willy@infradead.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-04-29 11:49:41 -04:00
parent f132ab7d3a
commit a77f580a2d
1 changed files with 7 additions and 7 deletions
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14
fs/libfs.c
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@ -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,