From a625298da6c693825126b7054d8ff4a95f2b5668 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Sun, 30 May 2010 22:49:47 -0400 Subject: [PATCH] ext4: allow defrag (EXT4_IOC_MOVE_EXT) in 32bit compat mode commit b684b2ee9409f2890a8b3aea98525bbe5f84e276 upstream (as of v2.6.34-git13) 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 Signed-off-by: "Theodore Ts'o" Reviewed-by: Eric Sandeen CC: Akira Fujita Signed-off-by: Greg Kroah-Hartman --- fs/ext4/ioctl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index bd2b4d71e22a..ce2deb2b9424 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -375,6 +375,8 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) break; case EXT4_IOC_GROUP_ADD: break; + case EXT4_IOC_MOVE_EXT: + break; default: return -ENOIOCTLCMD; } -- 2.39.5