Don't stomp on old ia_valid when changing user/group.

Found by Andrew Morton <akpm@zip.com.au>

Don't stomp on old ia_valid when changing user/group.
Found by Andrew Morton <akpm@zip.com.au>
d514d18f · Linus Torvalds · Linus Torvalds · cfd14b9e · d514d18f
Commit d514d18f authored Apr 10, 2002 by Linus Torvalds Committed by Linus Torvalds Apr 10, 2002
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fs/open.c fs/open.c +2 -2

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--- a/fs/open.c
+++ b/fs/open.c
@@ -524,11 +524,11 @@ static int chown_common(struct dentry * dentry, uid_t user, gid_t group)
 		goto out;
 	newattrs.ia_valid =  ATTR_CTIME;
 	if (user != (uid_t) -1) {
-		newattrs.ia_valid =  ATTR_UID;
+		newattrs.ia_valid |= ATTR_UID;
 		newattrs.ia_uid = user;
 	}
 	if (group != (gid_t) -1) {
-		newattrs.ia_valid =  ATTR_GID;
+		newattrs.ia_valid |= ATTR_GID;
 		newattrs.ia_gid = group;
 	}
 	if (!S_ISDIR(inode->i_mode))