FAILED: patch "[PATCH] Btrfs: add missing inode version, ctime and mtime updates" failed to apply to 4.4-stable tree

The patch below does not apply to the 4.4-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 179006688a7e888cbff39577189f2e034786d06a Mon Sep 17 00:00:00 2001
From: Filipe Manana <[email protected]>
Date: Wed, 19 Jun 2019 13:05:50 +0100
Subject: [PATCH] Btrfs: add missing inode version, ctime and mtime updates
when punching hole

If the range for which we are punching a hole covers only part of a page, we end up updating the inode item but we skip the update of the inode's iversion, mtime and ctime. Fix that by ensuring we update those properties of the inode.

A patch for fstests test case generic/059 that tests this as been sent along with this fix.

index 5370152ea7e3..b455bdf46faa 100644
@@ -2711,6 +2711,11 @@ out_only_mutex:
 		 * for detecting, at fsync time, if the inode isn't yet in the
 		 * log tree or it's there but not up to date.
 		 */
+		struct timespec64 now = current_time(inode);
+
+		inode_inc_iversion(inode);
+		inode->i_mtime = now;
+		inode->i_ctime = now;
 		trans = btrfs_start_transaction(root, 1);
 		if (IS_ERR(trans)) {
 			err = PTR_ERR(trans);