Commit 5c44aa21 authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Jan Kara
Browse files

isofs: Partially convert zisofs_read_folio to use a folio 



Remove several hidden calls to compound_head() and references
to page->index.  More needs to be done to use folios throughout
the zisofs code.

Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20241125180117.2914311-1-willy@infradead.org
parent feffde68

fs/isofs/compress.c

+5 −7
Original line number Diff line number Diff line
@@ -301,7 +301,6 @@ static int zisofs_fill_pages(struct inode *inode, int full_page, int pcount, 
 */

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

{

	struct page *page = &folio->page;

	struct inode *inode = file_inode(file);

	struct address_space *mapping = inode->i_mapping;

	int err;
@@ -311,16 +310,15 @@ static int zisofs_read_folio(struct file *file, struct folio *folio) 
		PAGE_SHIFT <= zisofs_block_shift ?

		(1 << (zisofs_block_shift - PAGE_SHIFT)) : 0;

	struct page **pages;

	pgoff_t index = page->index, end_index;

	pgoff_t index = folio->index, end_index;



	end_index = (inode->i_size + PAGE_SIZE - 1) >> PAGE_SHIFT;

	/*

	 * If this page is wholly outside i_size we just return zero;

	 * If this folio is wholly outside i_size we just return zero;

	 * do_generic_file_read() will handle this for us

	 */

	if (index >= end_index) {

		SetPageUptodate(page);

		unlock_page(page);

		folio_end_read(folio, true);

		return 0;

	}
@@ -338,10 +336,10 @@ static int zisofs_read_folio(struct file *file, struct folio *folio) 
	pages = kcalloc(max_t(unsigned int, zisofs_pages_per_cblock, 1),

					sizeof(*pages), GFP_KERNEL);

	if (!pages) {

		unlock_page(page);

		folio_unlock(folio);

		return -ENOMEM;

	}

	pages[full_page] = page;

	pages[full_page] = &folio->page;



	for (i = 0; i < pcount; i++, index++) {

		if (i != full_page)