----- Original Message ----- > From: Hillf Danton <dhi...@gmail.com> > To: Victor Meyerson <calculuspeng...@yahoo.com> > Cc: "linux-m...@linux-mips.org" <linux-m...@linux-mips.org>; Ralf Baechle > <r...@linux-mips.org>; LKML <linux-kernel@vger.kernel.org> > Sent: Friday, July 27, 2012 7:47 AM > Subject: Re: Direct I/O bug in kernel > > On Wed, Jul 25, 2012 at 1:28 AM, Victor Meyerson > <calculuspeng...@yahoo.com> wrote: >> >> Still different checksums and I used the same random-file from my first > test. >> > Then try the fix at > https://lkml.org/lkml/2012/7/27/54 >
I tried that patch, although I had to edit a slightly different line as dio_bio_alloc was near line 392 instead of 349 in the version of fs/direct-io.c in my tree. I still got different checksums between the two files and even different checksums from my earlier attempts. I am not sure if this helps, but Ralf asked if I can try a different page size to see if this problem occurs. I originally had CONFIG_PAGE_SIZE_4KB=y and changed it to CONFIG_PAGE_SIZE_16KB=y (via menuconfig). Having a page size of 16KB (and the above patch not applied) made the checksum on the files match each other and match the file made from the working kernel. Victor -- 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/
