[PATCH 1/2] ocfs2: Add group extend for online resize
This patch adds the ability for a userspace program to request an extend of
last cluster group on an Ocfs2 file system. The request is made via ioctl,
OCFS2_IOC_GROUP_EXTEND. This is derived from EXT3_IOC_GROUP_EXTEND, but is
obviously Ocfs2 specific.
tunefs.ocfs2 would call this for an online-resize operation if the last
cluster group isn't full.
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index 67c2fb4..b74b24e 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -20,6 +20,7 @@
#include "ocfs2_fs.h"
#include "ioctl.h"
+#include "resize.h"
#include <linux/ext2_fs.h>
@@ -115,6 +116,7 @@
unsigned int cmd, unsigned long arg)
{
unsigned int flags;
+ int new_clusters;
int status;
struct ocfs2_space_resv sr;
@@ -140,6 +142,11 @@
return -EFAULT;
return ocfs2_change_file_space(filp, cmd, &sr);
+ case OCFS2_IOC_GROUP_EXTEND:
+ if (get_user(new_clusters, (int __user *)arg))
+ return -EFAULT;
+
+ return ocfs2_group_extend(inode, new_clusters);
default:
return -ENOTTY;
}
@@ -162,6 +169,7 @@
case OCFS2_IOC_RESVSP64:
case OCFS2_IOC_UNRESVSP:
case OCFS2_IOC_UNRESVSP64:
+ case OCFS2_IOC_GROUP_EXTEND:
break;
default:
return -ENOIOCTLCMD;