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ext4: initialize moved_len before calling ext4_move_extents()

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The move_extent.moved_len is used to pass back the number of exchanged
blocks count to user space.  Currently the caller must clear this
field; but we spend more code space checking for this requirement than
simply zeroing the field ourselves, so let's just make life easier for
everyone all around.

Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
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:
Kazuya Mio
2009-11-24 10:28:48 -05:00
committed by Theodore Ts'o
parent 94d7c16cbb
commit 446aaa6e7e
2 changed files with 4 additions and 11 deletions
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fs/ext4/ioctl.c
+1
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@@ -239,6 +239,7 @@ setversion_out:
}
}
me.moved_len = 0;
err = ext4_move_extents(filp, donor_filp, me.orig_start,
me.donor_start, me.len, &me.moved_len);
fput(donor_filp);