[PATCH AUTOSEL 4.9 027/107] f2fs: avoid build warn of fall_through

[Sasha Levin]

From: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>

[ Upstream commit f5d5510e7389fa264337fb524346bac9eb93adc8 ]

After merging the f2fs tree, today's linux-next build
 (x86_64_allmodconfig) produced this warning:

 In file included from fs/f2fs/dir.c:11:
 fs/f2fs/f2fs.h: In function '__mark_inode_dirty_flag':
 fs/f2fs/f2fs.h:2388:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (set)
       ^
 fs/f2fs/f2fs.h:2390:2: note: here
   case FI_DATA_EXIST:
   ^~~~

 Exposed by my use of -Wimplicit-fallthrough

Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 fs/f2fs/f2fs.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 9c380885b0fc..662084490089 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1635,6 +1635,7 @@ static inline void __mark_inode_dirty_flag(struct inode *inode,
 	case FI_INLINE_DENTRY:
 		if (set)
 			return;
+		/* fall through */
 	case FI_DATA_EXIST:
 	case FI_INLINE_DOTS:
 		f2fs_mark_inode_dirty_sync(inode);
-- 
2.19.1