NTFS: Truncate {a,c,m}time to the ntfs supported time granularity when

      updating the times in the inode in ntfs_setattr().

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

2 files changed, 9 insertions, 5 deletions

diff --git a/fs/ntfs/ChangeLog b/fs/ntfs/ChangeLog
index beed90c..9c5af9c 100644
--- a/fs/ntfs/ChangeLog
+++ b/fs/ntfs/ChangeLog
@@ -73,6 +73,8 @@ ToDo/Notes:
 	- Fix cluster (de)allocators to work when the runlist is NULL and more
 	  importantly to take a locked runlist rather than them locking it
 	  which leads to lock reversal.
+	- Truncate {a,c,m}time to the ntfs supported time granularity when
+	  updating the times in the inode in ntfs_setattr().
 
 2.1.23 - Implement extension of resident files and make writing safe as well as
 	 many bug fixes, cleanups, and enhancements...
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index 886214a..89d844f 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -2430,16 +2430,18 @@ int ntfs_setattr(struct dentry *dentry, struct iattr *attr)
 			 * We skipped the truncate but must still update
 			 * timestamps.
 			 */
-			ia_valid |= ATTR_MTIME|ATTR_CTIME;
+			ia_valid |= ATTR_MTIME | ATTR_CTIME;
 		}
 	}
-
 	if (ia_valid & ATTR_ATIME)
-		vi->i_atime = attr->ia_atime;
+		vi->i_atime = timespec_trunc(attr->ia_atime,
+				vi->i_sb->s_time_gran);
 	if (ia_valid & ATTR_MTIME)
-		vi->i_mtime = attr->ia_mtime;
+		vi->i_mtime = timespec_trunc(attr->ia_mtime,
+				vi->i_sb->s_time_gran);
 	if (ia_valid & ATTR_CTIME)
-		vi->i_ctime = attr->ia_ctime;
+		vi->i_ctime = timespec_trunc(attr->ia_ctime,
+				vi->i_sb->s_time_gran);
 	mark_inode_dirty(vi);
 out:
 	return err;