Commit b05f41a1 authored by Vishal Moola (Oracle)'s avatar Vishal Moola (Oracle) Committed by Andrew Morton
Browse files

filemap: convert filemap_range_has_writeback() to use folios 

Removes 3 calls to compound_head().

Link: https://lkml.kernel.org/r/20220905214557.868606-1-vishal.moola@gmail.com


Signed-off-by: default avatarVishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 710bb68c

mm/filemap.c

+7 −6
Original line number Original line Diff line number Diff line
@@ -632,22 +632,23 @@ bool filemap_range_has_writeback(struct address_space *mapping, 
{

{

	XA_STATE(xas, &mapping->i_pages, start_byte >> PAGE_SHIFT);

	XA_STATE(xas, &mapping->i_pages, start_byte >> PAGE_SHIFT);

	pgoff_t max = end_byte >> PAGE_SHIFT;

	pgoff_t max = end_byte >> PAGE_SHIFT;

	struct page *page;

	struct folio *folio;





	if (end_byte < start_byte)

	if (end_byte < start_byte)

		return false;

		return false;





	rcu_read_lock();

	rcu_read_lock();

	xas_for_each(&xas, page, max) {

	xas_for_each(&xas, folio, max) {

		if (xas_retry(&xas, page))

		if (xas_retry(&xas, folio))

			continue;

			continue;

		if (xa_is_value(page))

		if (xa_is_value(folio))

			continue;

			continue;

		if (PageDirty(page) || PageLocked(page) || PageWriteback(page))

		if (folio_test_dirty(folio) || folio_test_locked(folio) ||

				folio_test_writeback(folio))

			break;

			break;

	}

	}

	rcu_read_unlock();

	rcu_read_unlock();

	return page != NULL;

	return folio != NULL;

}

}

EXPORT_SYMBOL_GPL(filemap_range_has_writeback);

EXPORT_SYMBOL_GPL(filemap_range_has_writeback);