Messages in this thread | | | Subject | Re: [SUGGESTION]: drop virtual merge accounting in I/O requests | From | Andi Kleen <> | Date | Sat, 12 Jul 2008 14:30:04 +0200 |
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Mikulas Patocka <mpatocka@redhat.com> writes:
> I'm getting crashes with InitIO A100u2w controller on Sparc64 (I had > to fix the endianity issues in the driver, but that's unrelated).
x86-64 (and powerpc) solved this a long time ago by only doing opportunistic merging: as in don't announce to the block layer that you can merge, but try to merge anyways. This way SG lists are not necessarily filled completely, but it's still better than overflowing them in some rare cases.
-Andi
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