linux-kernel - [PATCH] f2fs: fix to record dirty page count for symlink

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Date:	Mon, 29 Jun 2015 18:14:10 +0800
From:	Chao Yu <chao2.yu@...sung.com>
To:	Jaegeuk Kim <jaegeuk@...nel.org>,
	Changman Lee <cm224.lee@...sung.com>
Cc:	linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: [PATCH] f2fs: fix to record dirty page count for symlink

Dirty page can be exist in mapping of newly created symlink, but previously
we did not maintain the counting of dirty page for symlink like we maintained
for regular/directory, so the counting we lookuped should be wrong.

This patch adds missed dirty page counting for symlink to fix this issue.

Signed-off-by: Chao Yu <chao2.yu@...sung.com>
---
 fs/f2fs/checkpoint.c | 3 ++-
 fs/f2fs/f2fs.h       | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index b70bbe1..de7a0d6 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -704,7 +704,8 @@ void update_dirty_page(struct inode *inode, struct page *page)
 	struct inode_entry *new;
 	int ret = 0;
 
-	if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
+	if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
+			!S_ISLNK(inode->i_mode))
 		return;
 
 	if (!S_ISDIR(inode->i_mode)) {
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index a8327ed..5162204 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1039,7 +1039,8 @@ static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
 
 static inline void inode_dec_dirty_pages(struct inode *inode)
 {
-	if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode))
+	if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
+			!S_ISLNK(inode->i_mode))
 		return;
 
 	atomic_dec(&F2FS_I(inode)->dirty_pages);
-- 
2.4.2


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