[PATCH 1/3] f2fs: give time to flush dirty pages for checkpoint

[Jaegeuk Kim]

If all the threads are waiting for checkpoint, we have no chance to flush
required dirty pages.

Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
 fs/f2fs/checkpoint.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 9db92990f193..800be94f8cb3 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -980,6 +980,7 @@ static int block_operations(struct f2fs_sb_info *sbi)
                err = sync_dirty_inodes(sbi, DIR_INODE);
                if (err)
                        goto out;
+               cond_resched();
                goto retry_flush_dents;
        }
 
@@ -995,6 +996,7 @@ static int block_operations(struct f2fs_sb_info *sbi)
                err = f2fs_sync_inode_meta(sbi);
                if (err)
                        goto out;
+               cond_resched();
                goto retry_flush_dents;
        }
 
@@ -1009,6 +1011,7 @@ static int block_operations(struct f2fs_sb_info *sbi)
                        f2fs_unlock_all(sbi);
                        goto out;
                }
+               cond_resched();
                goto retry_flush_nodes;
        }
 
-- 
2.11.0