git: kernel - Fix CAM tag reservation for AHCI and SILI driver
commit 949597c267ec978bb2fa1eacb3297568faef6086
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Sat Apr 9 19:56:24 2011 -0700
kernel - Fix CAM tag reservation for AHCI and SILI driver
* These drivers were adjusting the number of available tags upward
using the wrong CAM call, which resulted in CAM not actually queueing
multiple tags. Use the correct call.
* With the issue fix and verified up to a combined 31 read and write
requests can now be queued in parallel to a SATA drive via the AHCI
driver. It does appear to make a difference.
Summary of changes:
sys/dev/disk/ahci/ahci_cam.c | 12 +++++++++---
sys/dev/disk/sili/sili_cam.c | 12 +++++++++---
2 files changed, 18 insertions(+), 6 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/949597c267ec978bb2fa1eacb3297568faef6086
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