[PATCH 3/8] f2fs: avoid wrong count on dirty inodes

From: Jaegeuk Kim
Date: Thu Jun 02 2016 - 23:55:57 EST


The number should be covered by spin_lock. Otherwise we can see wrong count
in f2fs_stat.

Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
---
fs/f2fs/super.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 27f76819e..9e75433 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -645,8 +645,8 @@ static void f2fs_dirty_inode(struct inode *inode, int flags)
list_add_tail(&F2FS_I(inode)->gdirty_list,
&sbi->inode_list[DIRTY_META]);
inc_page_count(sbi, F2FS_DIRTY_IMETA);
- spin_unlock(&sbi->inode_lock[DIRTY_META]);
stat_inc_dirty_inode(sbi, DIRTY_META);
+ spin_unlock(&sbi->inode_lock[DIRTY_META]);
}

void f2fs_inode_synced(struct inode *inode)
@@ -662,8 +662,8 @@ void f2fs_inode_synced(struct inode *inode)
clear_inode_flag(inode, FI_DIRTY_INODE);
clear_inode_flag(inode, FI_AUTO_RECOVER);
dec_page_count(sbi, F2FS_DIRTY_IMETA);
- spin_unlock(&sbi->inode_lock[DIRTY_META]);
stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META);
+ spin_unlock(&sbi->inode_lock[DIRTY_META]);
}

static void f2fs_i_callback(struct rcu_head *head)
--
2.6.3