From: Chao Yu <[email protected]>

[ Upstream commit 9149a5eb606152df158eb7d7da5a34e84b574189 ]

This patch changes codes as below:
- use f2fs_set_inode_flags() to update i_flags atomically to avoid
potential race.
- synchronize F2FS_I(inode)->i_flags to inode->i_flags in
f2fs_new_inode().
- use f2fs_set_inode_flags() to simply codes in f2fs_quota_{on,off}.

Signed-off-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
 fs/f2fs/f2fs.h  | 2 +-
 fs/f2fs/namei.c | 2 ++
 fs/f2fs/super.c | 5 ++---
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index fb216488d67a9..c9d19832426b1 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -3387,7 +3387,7 @@ static inline void f2fs_set_encrypted_inode(struct inode 
*inode)
 {
 #ifdef CONFIG_F2FS_FS_ENCRYPTION
        file_set_encrypt(inode);
-       inode->i_flags |= S_ENCRYPTED;
+       f2fs_set_inode_flags(inode);
 #endif
 }
 
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 1f67e389169f5..6b23dcbf52f45 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -124,6 +124,8 @@ static struct inode *f2fs_new_inode(struct inode *dir, 
umode_t mode)
        if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
                set_inode_flag(inode, FI_PROJ_INHERIT);
 
+       f2fs_set_inode_flags(inode);
+
        trace_f2fs_new_inode(inode, 0);
        return inode;
 
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index d9106bbe7df63..7aefb2c35c48f 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1835,8 +1835,7 @@ static int f2fs_quota_on(struct super_block *sb, int 
type, int format_id,
 
        inode_lock(inode);
        F2FS_I(inode)->i_flags |= F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL;
-       inode_set_flags(inode, S_NOATIME | S_IMMUTABLE,
-                                       S_NOATIME | S_IMMUTABLE);
+       f2fs_set_inode_flags(inode);
        inode_unlock(inode);
        f2fs_mark_inode_dirty_sync(inode, false);
 
@@ -1861,7 +1860,7 @@ static int f2fs_quota_off(struct super_block *sb, int 
type)
 
        inode_lock(inode);
        F2FS_I(inode)->i_flags &= ~(F2FS_NOATIME_FL | F2FS_IMMUTABLE_FL);
-       inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE);
+       f2fs_set_inode_flags(inode);
        inode_unlock(inode);
        f2fs_mark_inode_dirty_sync(inode, false);
 out_put:
-- 
2.20.1



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