From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Sat, 10 Jan 2015 00:27:17 +0000 (-0800)
Subject: f2fs: avoid infinite loop on cp_error
X-Git-Tag: v4.0-rc1~97^2~31
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=871f599f4a869d24ef98b0217f19f0cc55ff59ac;p=karo-tx-linux.git

f2fs: avoid infinite loop on cp_error

If cp_error is set, we should avoid all the infinite loop.
In f2fs_sync_file, there is a hole, and this patch fixes that.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 5df336757d6c..710adc987937 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -247,6 +247,10 @@ go_write:
 sync_nodes:
 	sync_node_pages(sbi, ino, &wbc);
 
+	/* if cp_error was enabled, we should avoid infinite loop */
+	if (unlikely(f2fs_cp_error(sbi)))
+		goto out;
+
 	if (need_inode_block_update(sbi, ino)) {
 		mark_inode_dirty_sync(inode);
 		f2fs_write_inode(inode, NULL);