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[PATCH 1/2] ocfs2: Add group extend for online resize

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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>
This commit is contained in:
Tao Ma
2007-12-18 15:47:03 +08:00
committed by Mark Fasheh
parent 7f68fc2821
commit d659072f73
10 changed files with 518 additions and 7 deletions
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8
fs/ocfs2/ioctl.c
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@@ -20,6 +20,7 @@
#include "ocfs2_fs.h"
#include "ioctl.h"
#include "resize.h"
#include <linux/ext2_fs.h>
@@ -115,6 +116,7 @@ int ocfs2_ioctl(struct inode * inode, struct file * filp,
unsigned int cmd, unsigned long arg)
{
unsigned int flags;
int new_clusters;
int status;
struct ocfs2_space_resv sr;
@@ -140,6 +142,11 @@ int ocfs2_ioctl(struct inode * inode, struct file * filp,
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 @@ long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case OCFS2_IOC_RESVSP64:
case OCFS2_IOC_UNRESVSP:
case OCFS2_IOC_UNRESVSP64:
case OCFS2_IOC_GROUP_EXTEND:
break;
default:
return -ENOIOCTLCMD;