AcoSail/kernel_optimize_test
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ext4: Return exchanged blocks count to user space in failure

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Return exchanged blocks count (moved_len) to user space,
if ext4_move_extents() failed on the way.

Signed-off-by: Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Akira Fujita 2009-09-05 22:46:29 -04:00 committed by Theodore Ts'o
parent daea696dba
commit 8d6669133d
1 changed files with 3 additions and 4 deletions
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7
fs/ext4/ioctl.c
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@ -243,10 +243,9 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
me.donor_start, me.len, &me.moved_len);
fput(donor_filp);
if (!err)
if (copy_to_user((struct move_extent *)arg,
&me, sizeof(me)))
return -EFAULT;
if (copy_to_user((struct move_extent *)arg, &me, sizeof(me)))
return -EFAULT;
return err;
}