f2fs: adjust free mem size to flush dentry blocks

If so many dirty dentry blocks are cached, not reached to the flush condition,
we should fall into livelock in balance_dirty_pages.
So, let's consider the mem size for the condition.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index b5cd6d1c9320..6b89b2517edf 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -863,7 +863,8 @@ static int f2fs_write_data_pages(struct address_space *mapping,
                 return 0;
 
         if (S_ISDIR(inode->i_mode) && wbc->sync_mode == WB_SYNC_NONE &&
-                        get_dirty_dents(inode) < nr_pages_to_skip(sbi, DATA))
+                        get_dirty_dents(inode) < nr_pages_to_skip(sbi, DATA) &&
+                        available_free_memory(sbi, DIRTY_DENTS))
                 goto skip_write;
 
         diff = nr_pages_to_write(sbi, DATA, wbc);