Commit 25b93346 authored by Jaegeuk Kim's avatar Jaegeuk Kim
Browse files

f2fs: cover number of dirty node pages under node_write lock 



This number is referenced by checkpoint under node_write lock.

Reviewed-by: default avatarChao Yu <chao2.yu@samsung.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 538e17e7

fs/f2fs/node.c

+8 −7
Original line number Diff line number Diff line
@@ -1323,23 +1323,24 @@ static int f2fs_write_node_page(struct page *page, 
	nid = nid_of_node(page);

	f2fs_bug_on(sbi, page->index != nid);



	if (wbc->for_reclaim) {

		if (!down_read_trylock(&sbi->node_write))

			goto redirty_out;

	} else {

		down_read(&sbi->node_write);

	}



	get_node_info(sbi, nid, &ni);



	/* This page is already truncated */

	if (unlikely(ni.blk_addr == NULL_ADDR)) {

		ClearPageUptodate(page);

		dec_page_count(sbi, F2FS_DIRTY_NODES);

		up_read(&sbi->node_write);

		unlock_page(page);

		return 0;

	}



	if (wbc->for_reclaim) {

		if (!down_read_trylock(&sbi->node_write))

			goto redirty_out;

	} else {

		down_read(&sbi->node_write);

	}



	set_page_writeback(page);

	fio.blk_addr = ni.blk_addr;

	write_node_page(nid, &fio);