[PATCH 09/14] fs: factor out a mark_inode_dirty_time helper

[Christoph Hellwig <hch@lst.de>]

Factor out the inode dirtying vs lazytime logic from generic_update_time
into a new helper so that it can be reused in file system methods.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 fs/fs-writeback.c  | 15 +++++++++++++++
 fs/inode.c         | 14 +++-----------
 include/linux/fs.h |  3 ++-
 3 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 2b35e80037fe..930697f39153 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -2671,6 +2671,21 @@ void __mark_inode_dirty(struct inode *inode, int flags)
 }
 EXPORT_SYMBOL(__mark_inode_dirty);
 
+void mark_inode_dirty_time(struct inode *inode, unsigned int flags)
+{
+	if (inode->i_sb->s_flags & SB_LAZYTIME) {
+		int dirty_flags = 0;
+
+		if (flags & (S_ATIME | S_MTIME | S_CTIME))
+			dirty_flags = I_DIRTY_TIME;
+		if (flags & S_VERSION)
+			dirty_flags |= I_DIRTY_SYNC;
+		__mark_inode_dirty(inode, dirty_flags);
+	} else {
+		mark_inode_dirty_sync(inode);
+	}
+}
+
 /*
  * The @s_sync_lock is used to serialise concurrent sync operations
  * to avoid lock contention problems with concurrent wait_sb_inodes() calls.
diff --git a/fs/inode.c b/fs/inode.c
index 57c458ee548d..559ce5c07188 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -2095,17 +2095,9 @@ EXPORT_SYMBOL(inode_update_timestamps);
  */
 int generic_update_time(struct inode *inode, int flags)
 {
-	int updated = inode_update_timestamps(inode, flags);
-	int dirty_flags = 0;
-
-	if (!updated)
-		return 0;
-
-	if (updated & (S_ATIME|S_MTIME|S_CTIME))
-		dirty_flags = inode->i_sb->s_flags & SB_LAZYTIME ? I_DIRTY_TIME : I_DIRTY_SYNC;
-	if (updated & S_VERSION)
-		dirty_flags |= I_DIRTY_SYNC;
-	__mark_inode_dirty(inode, dirty_flags);
+	flags = inode_update_timestamps(inode, flags);
+	if (flags)
+		mark_inode_dirty_time(inode, flags);
 	return 0;
 }
 EXPORT_SYMBOL(generic_update_time);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index c1077ae7c6b2..5c762d80b8a8 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2608,7 +2608,8 @@ static inline void kiocb_clone(struct kiocb *kiocb, struct kiocb *kiocb_src,
 	};
 }
 
-extern void __mark_inode_dirty(struct inode *, int);
+void mark_inode_dirty_time(struct inode *inode, unsigned int flags);
+void __mark_inode_dirty(struct inode *inode, int flags);
 static inline void mark_inode_dirty(struct inode *inode)
 {
 	__mark_inode_dirty(inode, I_DIRTY);
-- 
2.47.3