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| author | Kazuya Mio <k-mio@sx.jp.nec.com> | 2009-11-24 16:28:48 +0100 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-11-24 16:28:48 +0100 |
| commit | 446aaa6e7e993b38a6f21c6acfa68f3f1af3dbe3 (patch) | |
| tree | dedc46c0d80a20061c0df463dcc6260aef394e2d /fs/ext4/ioctl.c | |
| parent | ext4: Fix double-free of blocks with EXT4_IOC_MOVE_EXT (diff) | |
| download | linux-446aaa6e7e993b38a6f21c6acfa68f3f1af3dbe3.tar.xz linux-446aaa6e7e993b38a6f21c6acfa68f3f1af3dbe3.zip | |
ext4: initialize moved_len before calling ext4_move_extents()
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>
Diffstat (limited to 'fs/ext4/ioctl.c')
| -rw-r--r-- | fs/ext4/ioctl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index c1cdf613e725..31e5ee0c858f 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -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); |