From: Filipe Manana <fdman...@suse.com>

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.

Fixes: 2aaa66558172b0 ("Btrfs: add hole punching")
Fixes: e8c1c76e804b18 ("Btrfs: add missing inode update when punching hole")
Signed-off-by: Filipe Manana <fdman...@suse.com>
---
 fs/btrfs/file.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 89f5be2bfb43..1c7533db16b0 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -2721,6 +2721,11 @@ static int btrfs_punch_hole(struct inode *inode, loff_t 
offset, loff_t len)
                 * 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);
-- 
2.11.0

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