f2fs: write node pages if checkpoint is not doing

It needs to write node pages if checkpoint is not doing in order to avoid
memory pressure.

Reviewed-by: Changman Lee <cm224.lee@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

1 files changed, 6 insertions, 4 deletions

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 4ea2c4728156..6f514fb5fd96 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1314,10 +1314,12 @@ static int f2fs_write_node_page(struct page *page,
                 return 0;
         }
 
-        if (wbc->for_reclaim)
-                goto redirty_out;
-
-        down_read(&sbi->node_write);
+        if (wbc->for_reclaim) {
+                if (!down_read_trylock(&sbi->node_write))
+                        goto redirty_out;
+        } else {
+                down_read(&sbi->node_write);
+        }
         set_page_writeback(page);
         write_node_page(sbi, page, &fio, nid, ni.blk_addr, &new_addr);
         set_node_addr(sbi, &ni, new_addr, is_fsync_dnode(page));