From a125702326d9c3b753fe9c9b9727d3b3dd1cba4a Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Thu, 8 Oct 2015 10:40:07 -0700
Subject: Revert "f2fs: do not skip dentry block writes"

The periodic checkpoint can resolve the previous issue.
So, now we can use this again to improve the reported performance regression:

https://lkml.org/lkml/2015/10/8/20

This reverts commit 15bec0ff5a9ba6d203178fa8772259df6207942a.
---
 fs/f2fs/node.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'fs/f2fs/node.c')

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 1fe49ca20757..4d9bedfe101c 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -52,6 +52,11 @@ bool available_free_memory(struct f2fs_sb_info *sbi, int type)
 		mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >>
 							PAGE_CACHE_SHIFT;
 		res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
+	} else if (type == DIRTY_DENTS) {
+		if (sbi->sb->s_bdi->wb.dirty_exceeded)
+			return false;
+		mem_size = get_pages(sbi, F2FS_DIRTY_DENTS);
+		res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
 	} else if (type == INO_ENTRIES) {
 		int i;
 
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