xfs: update ctime and mtime on clone destinatation inodes

commit c5ecb42342852892f978572ddc6dca703460f25a upstream.

We're changing both metadata and data, so we need to update the
timestamps for clone operations.  Dedupe on the other hand does
not change file data, and only changes invisible metadata so the
timestamps should not be updated.

This follows existing btrfs behavior.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
[darrick: remove redundant is_dedupe test]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 9 insertions, 3 deletions

diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index 539a612a02e5..36c07b12189e 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -985,13 +985,14 @@ STATIC int
 xfs_reflink_update_dest(
         struct xfs_inode        *dest,
         xfs_off_t               newlen,
-        xfs_extlen_t            cowextsize)
+        xfs_extlen_t            cowextsize,
+        bool                    is_dedupe)
 {
         struct xfs_mount        *mp = dest->i_mount;
         struct xfs_trans        *tp;
         int                     error;
 
-        if (newlen <= i_size_read(VFS_I(dest)) && cowextsize == 0)
+        if (is_dedupe && newlen <= i_size_read(VFS_I(dest)) && cowextsize == 0)
                 return 0;
 
         error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);
@@ -1012,6 +1013,10 @@ xfs_reflink_update_dest(
                 dest->i_d.di_flags2 |= XFS_DIFLAG2_COWEXTSIZE;
         }
 
+        if (!is_dedupe) {
+                xfs_trans_ichgtime(tp, dest,
+                                   XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
+        }
         xfs_trans_log_inode(tp, dest, XFS_ILOG_CORE);
 
         error = xfs_trans_commit(tp);
@@ -1528,7 +1533,8 @@ xfs_reflink_remap_range(
             !(dest->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE))
                 cowextsize = src->i_d.di_cowextsize;
 
-        ret = xfs_reflink_update_dest(dest, pos_out + len, cowextsize);
+        ret = xfs_reflink_update_dest(dest, pos_out + len, cowextsize,
+                        is_dedupe);
 
 out_unlock:
         xfs_iunlock(src, XFS_MMAPLOCK_EXCL);