Hi,
On Mon, 10 Oct 2005, Glauber de Oliveira Costa wrote:
> I've just noticed that the use of sb_getblk differs between locations
> inside the kernel. To be precise, in some locations there are tests
> against its return value, and in some places there are not.
>
> According to the comments in __getblk definition, the tests are not
> necessary, as the function always return a buffer_head (maybe a wrong
> one),
If you had read the source code rather than just the comments you would
have seen that this is not true. It can return NULL (see
fs/buffer.c::__getblk_slow()). Certainly I would prefer to keep the
checks in NTFS, please. They may only be good for catching bugs but I
like catching bugs rather than segfaulting due to a NULL dereference.
Best regards,
Anton
--
Anton Altaparmakov <aia21 at cam.ac.uk> (replace at with @)
Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK
Linux NTFS maintainer / IRC: #ntfs on irc.freenode.net
WWW: http://linux-ntfs.sf.net/ & http://www-stu.christs.cam.ac.uk/~aia21/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
