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ocfs2: Add FITRIM ioctl. 

Add the corresponding ioctl function for FITRIM.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
This commit is contained in:
Tao Ma 2011-05-23 10:36:44 +08:00 committed by Joel Becker
parent e80de36d8d
commit 55e67872b6
1 changed files with 24 additions and 0 deletions
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24
fs/ocfs2/ioctl.c
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@ -542,6 +542,29 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
return -EFAULT;
return ocfs2_info_handle(inode, &info, 0);
case FITRIM:
{
struct super_block *sb = inode->i_sb;
struct fstrim_range range;
int ret = 0;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (copy_from_user(&range, (struct fstrim_range *)arg,
sizeof(range)))
return -EFAULT;
ret = ocfs2_trim_fs(sb, &range);
if (ret < 0)
return ret;
if (copy_to_user((struct fstrim_range *)arg, &range,
sizeof(range)))
return -EFAULT;
return 0;
}
default:
return -ENOTTY;
}
@ -569,6 +592,7 @@ long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
case OCFS2_IOC_GROUP_EXTEND:
case OCFS2_IOC_GROUP_ADD:
case OCFS2_IOC_GROUP_ADD64:
case FITRIM:
break;
case OCFS2_IOC_REFLINK:
if (copy_from_user(&args, (struct reflink_arguments *)arg,