Merge branch 'for-linus' into for-next

Pull 7.0-devel branch for further development of HD-audio codec quirks.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 27 insertions, 9 deletions

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 7c75ed7e8979..3c75ee025bda 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -1711,6 +1711,19 @@ static void requeue_inode(struct inode *inode, struct bdi_writeback *wb,
 	}
 }
 
+static bool __sync_lazytime(struct inode *inode)
+{
+	spin_lock(&inode->i_lock);
+	if (!(inode_state_read(inode) & I_DIRTY_TIME)) {
+		spin_unlock(&inode->i_lock);
+		return false;
+	}
+	inode_state_clear(inode, I_DIRTY_TIME);
+	spin_unlock(&inode->i_lock);
+	inode->i_op->sync_lazytime(inode);
+	return true;
+}
+
 bool sync_lazytime(struct inode *inode)
 {
 	if (!(inode_state_read_once(inode) & I_DIRTY_TIME))
@@ -1718,9 +1731,8 @@ bool sync_lazytime(struct inode *inode)
 
 	trace_writeback_lazytime(inode);
 	if (inode->i_op->sync_lazytime)
-		inode->i_op->sync_lazytime(inode);
-	else
-		mark_inode_dirty_sync(inode);
+		return __sync_lazytime(inode);
+	mark_inode_dirty_sync(inode);
 	return true;
 }
 
@@ -2775,13 +2787,8 @@ static void wait_sb_inodes(struct super_block *sb)
 		 * The mapping can appear untagged while still on-list since we
 		 * do not have the mapping lock. Skip it here, wb completion
 		 * will remove it.
-		 *
-		 * If the mapping does not have data integrity semantics,
-		 * there's no need to wait for the writeout to complete, as the
-		 * mapping cannot guarantee that data is persistently stored.
 		 */
-		if (!mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK) ||
-		    mapping_no_data_integrity(mapping))
+		if (!mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK))
 			continue;
 
 		spin_unlock_irq(&sb->s_inode_wblist_lock);
@@ -2916,6 +2923,17 @@ void sync_inodes_sb(struct super_block *sb)
 	 */
 	if (bdi == &noop_backing_dev_info)
 		return;
+
+	/*
+	 * If the superblock has SB_I_NO_DATA_INTEGRITY set, there's no need to
+	 * wait for the writeout to complete, as the filesystem cannot guarantee
+	 * data persistence on sync. Just kick off writeback and return.
+	 */
+	if (sb->s_iflags & SB_I_NO_DATA_INTEGRITY) {
+		wakeup_flusher_threads_bdi(bdi, WB_REASON_SYNC);
+		return;
+	}
+
 	WARN_ON(!rwsem_is_locked(&sb->s_umount));
 
 	/* protect against inode wb switch, see inode_switch_wbs_work_fn() */