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

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Date:   Wed, 12 Apr 2017 14:21:19 -0700
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Cc:     Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 1/3] f2fs: give time to flush dirty pages for checkpoint

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

Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.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