Commit 0a943c65 authored by Matthew Wilcox's avatar Matthew Wilcox
Browse files

btrfs: Convert page cache to XArray 



Signed-off-by: default avatarMatthew Wilcox <willy@infradead.org>
Acked-by: default avatarDavid Sterba <dsterba@suse.com>
parent 7f4446ee

fs/btrfs/compression.c

+1 −3
Original line number Diff line number Diff line
@@ -437,9 +437,7 @@ static noinline int add_ra_bio_pages(struct inode *inode, 
		if (pg_index > end_index)

			break;



		rcu_read_lock();

		page = radix_tree_lookup(&mapping->i_pages, pg_index);

		rcu_read_unlock();

		page = xa_load(&mapping->i_pages, pg_index);

		if (page && !xa_is_value(page)) {

			misses++;

			if (misses > 4)

fs/btrfs/extent_io.c

+3 −5
Original line number Diff line number Diff line
@@ -5153,11 +5153,9 @@ void clear_extent_buffer_dirty(struct extent_buffer *eb) 


		clear_page_dirty_for_io(page);

		xa_lock_irq(&page->mapping->i_pages);

		if (!PageDirty(page)) {

			radix_tree_tag_clear(&page->mapping->i_pages,

						page_index(page),

						PAGECACHE_TAG_DIRTY);

		}

		if (!PageDirty(page))

			__xa_clear_mark(&page->mapping->i_pages,

					page_index(page), PAGECACHE_TAG_DIRTY);

		xa_unlock_irq(&page->mapping->i_pages);

		ClearPageError(page);

		unlock_page(page);