isofs: convert to ctime accessor functions

In later patches, we're going to change how the inode's ctime field is
used. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Message-Id: <20230705190309.579783-51-jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>

fs/isofs/inode.c

@@ -1422,13 +1422,8 @@ static int isofs_read_inode(struct inode *inode, int relocated)
 			inode->i_ino, de->flags[-high_sierra]);
 	}
 #endif
-
-	inode->i_mtime.tv_sec =
-	inode->i_atime.tv_sec =
-	inode->i_ctime.tv_sec = iso_date(de->date, high_sierra);
-	inode->i_mtime.tv_nsec =
-	inode->i_atime.tv_nsec =
-	inode->i_ctime.tv_nsec = 0;
+	inode->i_mtime = inode->i_atime =
+		inode_set_ctime(inode, iso_date(de->date, high_sierra), 0);
 
 	ei->i_first_extent = (isonum_733(de->extent) +
 			isonum_711(de->ext_attr_length));

fs/isofs/rock.c

@@ -421,10 +421,9 @@ repeat:
 			/* Rock ridge never appears on a High Sierra disk */
 			cnt = 0;
 			if (rr->u.TF.flags & TF_CREATE) {
-				inode->i_ctime.tv_sec =
-				    iso_date(rr->u.TF.times[cnt++].time,
-					     0);
-				inode->i_ctime.tv_nsec = 0;
+				inode_set_ctime(inode,
+						iso_date(rr->u.TF.times[cnt++].time, 0),
+						0);
 			}
 			if (rr->u.TF.flags & TF_MODIFY) {
 				inode->i_mtime.tv_sec =
@@ -439,10 +438,9 @@ repeat:
 				inode->i_atime.tv_nsec = 0;
 			}
 			if (rr->u.TF.flags & TF_ATTRIBUTES) {
-				inode->i_ctime.tv_sec =
-				    iso_date(rr->u.TF.times[cnt++].time,
-					     0);
-				inode->i_ctime.tv_nsec = 0;
+				inode_set_ctime(inode,
+						iso_date(rr->u.TF.times[cnt++].time, 0),
+						0);
 			}
 			break;
 		case SIG('S', 'L'):
@@ -534,7 +532,7 @@ repeat:
 			inode->i_size = reloc->i_size;
 			inode->i_blocks = reloc->i_blocks;
 			inode->i_atime = reloc->i_atime;
-			inode->i_ctime = reloc->i_ctime;
+			inode_set_ctime_to_ts(inode, inode_get_ctime(reloc));
 			inode->i_mtime = reloc->i_mtime;
 			iput(reloc);
 			break;