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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2009-05-13 15:13:42 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-05-13 15:13:42 -0400 |
| commit | 79ffab34391933ee3b95dac7f25c0478fa2f8f1e (patch) | |
| tree | 8bc139928e172ef2ebd38e01f97dc01f886d8526 /fs/ext4/extents.c | |
| parent | 9fa7eb283c5cdc2b0f4a8cfe6387ed82e5e9a3d3 (diff) | |
ext4: Properly initialize the buffer_head state
These struct buffer_heads are allocated on the stack (and hence are
initialized with stack garbage). They are only used to call a
get_blocks() function, so that's mostly OK, but b_state must be
initialized to be 0 so we don't have any unexpected BH_* flags set by
accident, such as BH_Unwritten or BH_Delay.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/extents.c')
| -rw-r--r-- | fs/ext4/extents.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index e3a55eb8b26a..a953214f2829 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -3150,6 +3150,7 @@ retry: ret = PTR_ERR(handle); break; } + map_bh.b_state = 0; ret = ext4_get_blocks_wrap(handle, inode, block, max_blocks, &map_bh, EXT4_CREATE_UNINITIALIZED_EXT, 0, 0); |