On Mon, Jun 03, 2013 at 01:00:15PM +0300, Ruslan Bilovol wrote:
> The memset() doesn't perform any NULL-pointer checking
> before dereferencing passed pointer so this should be
> checked before calling it.
I can see that __getblk() can return NULL if there is a memory
allocation failure (and is defined to do so), so checking to make sure
bh is not NULL is a good thing to do.
Have you actually seen a case where bh is non-NULL, but bh->b_data is
NULL? If not, it might be better to do something like this:
> bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);
if (!bh)
return NULL;
BUG_ON(!bh->b_data);
- Ted
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
