On Sat, Jan 26, 2008 at 05:08:49PM +0530, Aneesh Kumar K.V wrote:
> This diff contain mballoc fixes and update for ext3-4 migrate patch.
I will fold these patches into the patch queue in the proper places
(and adjust other patches as necessary).
> diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
> index a60672c..9de0cdf 100644
> --- a/fs/ext4/mballoc.c
> +++ b/fs/ext4/mballoc.c
> @@ -4452,7 +4452,6 @@ do_more:
> overflow = bit + count - EXT4_BLOCKS_PER_GROUP(sb);
> count -= overflow;
> }
> - put_bh(bitmap_bh);
> bitmap_bh = read_block_bitmap(sb, block_group);
> if (!bitmap_bh)
> goto error_return;
This patch hunk causes a failure due to a botched brelse->put_bh
conversion, but removing it isn't the right fix. It was there to
avoid a buffer leak on a goto. So the right fix is to remove the
put_bh() above, but to add one here, circa line 4542 of mballoc.c:
if (overflow && !err) {
block += count;
count = overflow;
+ put_bh(bitmap_bh);
goto do_more;
}
And once we do that, we can drop the initialization of bitmap_bh to
NULL, circa line 4408:
int metadata, unsigned long *freed)
{
- struct buffer_head *bitmap_bh = NULL;
+ struct buffer_head *bitmap_bh;
struct super_block *sb = inode->i_sb;
struct ext4_allocation_context ac;
- Ted
-
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