git: NATA - Replace the queuing algorithm with the one used by b
commit 9469b9f3491d1a7c6329be6c5dcc2611fdce8b17
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Wed Aug 19 14:49:14 2009 -0700
NATA - Replace the queuing algorithm with the one used by bioq.
* NATA doesn't use bioq yet, but I replicated the algorithm to fix the
read starvation issue.
* Interesting note: Because NATA does not have NCQ reads appear to be
prioritized even more then they are on AHCI.
Summary of changes:
sys/dev/disk/nata/ata-all.c | 2 +-
sys/dev/disk/nata/ata-all.h | 5 +-
sys/dev/disk/nata/ata-queue.c | 160 +++++++++++++++++++----------------------
sys/dev/disk/nata/ata-usb.c | 2 +-
4 files changed, 80 insertions(+), 89 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/9469b9f3491d1a7c6329be6c5dcc2611fdce8b17
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