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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2010-05-15 00:00:00 -0400 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2011-01-06 18:07:34 -0500 |
| commit | d14f90a2e15b6312b5c25ec445edecbb77b3cd1c (patch) | |
| tree | a387ab9fc08822f7b0fa4ad8e58898f0fdf3559a /fs | |
| parent | c486048538a69b481800ce677db2b714625fbfdc (diff) | |
| download | lwn-d14f90a2e15b6312b5c25ec445edecbb77b3cd1c.tar.gz lwn-d14f90a2e15b6312b5c25ec445edecbb77b3cd1c.zip | |
ext4: allow defrag (EXT4_IOC_MOVE_EXT) in 32bit compat mode
commit b684b2ee9409f2890a8b3aea98525bbe5f84e276 upstream.
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@de.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
CC: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/ioctl.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 016d0249294f..66fa0b030e37 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; } |