Re: [RFC][PATCH 002 of 3] MD Acceleration: md_adma driver for raid5 offload

2006-02-03 Thread Evgeniy Polyakov
Hello, Dan. Couple of comments. On Thu, Feb 02, 2006 at 06:12:59PM -0700, Dan Williams ([EMAIL PROTECTED]) wrote: ... +/* + * Issue a copy data operation between a page in the stripe cache, and a bio. + * There are no alignment or size guarantees between the page or the + * bio except that

[RFC][PATCH 002 of 3] MD Acceleration: md_adma driver for raid5 offload

2006-02-02 Thread Dan Williams
This patch provides a re-write of the original raid5.c:compute_parity and raid5.c:copy_data routines. For md_issue_copy_data() special consideration had to be made for highmem buffers, since it appears that holding an atomic mapping until the copy is complete would be problematic. Both routines