* [patch] block highmem zero bounce v15
@ 2001-09-23 23:28 Jens Axboe
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From: Jens Axboe @ 2001-09-23 23:28 UTC (permalink / raw)
To: Linux Kernel; +Cc: arjanv, David S. Miller, Linus Torvalds
Hi,
I've uploaded a new version of the patch that allows direct I/O to
highmem memory without resorting to bouncing to lower memory. Changes
since last time include:
- Update to 2.4.10
- Fix SCSI dont-merge error. No corruption, just a performance
hit (me)
- Add single_sg_ok entry to SCSI hosts. An alternative solution would be
to always bounce single entry sg for highmem pages, however I don't
want decent drivers to take a hit on account of crap drivers. Now the
entire I/O path should be unaffected for non-highmem enabled
hosts/drivers. (me)
ATM only aic7xxx and sym53c8xxx have single_sg_ok enabled, others will
follow on a per-audit basis.
*.kernel.org/pub/linux/kernel/people/axboe/patches/2.4.10/block-highmem-all-15
--
Jens Axboe
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2001-09-23 23:28 [patch] block highmem zero bounce v15 Jens Axboe
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