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Message-Id: <201003072132.10579.borntraeger@de.ibm.com>
Date: Sun, 7 Mar 2010 21:32:10 +0100
From: Christian Borntraeger <borntraeger@...ibm.com>
To: linux-ext4@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Akira Fujita <a-fujita@...jp.nec.com>
Subject: [PATCH] ext4: allow defrag (EXT4_IOC_MOVE_EXT) in 32bit compat mode
I have an x86_64 kernel with i386 userspace. e4defrag fails on the
EXT4_IOC_MOVE_EXT ioctl because it is not wired up for the compat
case. It seems that struct move_extent is compat save, only types
with fixed widths are used:
{
__u32 reserved; /* should be zero */
__u32 donor_fd; /* donor file descriptor */
__u64 orig_start; /* logical start offset in block for orig */
__u64 donor_start; /* logical start offset in block for donor */
__u64 len; /* block length to be moved */
__u64 moved_len; /* moved block length */
};
Lets just wire up EXT4_IOC_MOVE_EXT for the compat case.
Signed-off-by: Christian Borntraeger <borntraeger@...ibm.com>
CCed: Akira Fujita <a-fujita@...jp.nec.com>
---
fs/ext4/ioctl.c | 2 ++
1 file changed, 2 insertions(+)
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -375,6 +375,8 @@ long ext4_compat_ioctl(struct file *file
break;
case EXT4_IOC_GROUP_ADD:
break;
+ case EXT4_IOC_MOVE_EXT:
+ break;
default:
return -ENOIOCTLCMD;
}
--
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