Original patch by Atul.

Increase the maximum number of scatter gather entries for the MPT Fusion
driver to 256, and use that setting in our RHEL 5 kernel config.

diff --git a/lustre/kernel_patches/kernel_configs/kernel-2.6.18-2.6-rhel5-x86_64-smp.config b/lustre/kernel_patches/kernel_configs/kernel-2.6.18-2.6-rhel5-x86_64-smp.config
index 1989337..993c085 100644 (file)
--- a/lustre/kernel_patches/kernel_configs/kernel-2.6.18-2.6-rhel5-x86_64-smp.config
+++ b/lustre/kernel_patches/kernel_configs/kernel-2.6.18-2.6-rhel5-x86_64-smp.config
@@ -1265,7 +1265,8 @@ CONFIG_FUSION=y
 CONFIG_FUSION_SPI=m
 CONFIG_FUSION_FC=m
 CONFIG_FUSION_SAS=m
-CONFIG_FUSION_MAX_SGE=128
+CONFIG_FUSION_MAX_SGE=256
+CONFIG_FUSION_MAX_FC_SGE=256
 CONFIG_FUSION_CTL=m
 CONFIG_FUSION_LAN=m
 CONFIG_FUSION_LOGGING=y

diff --git a/lustre/kernel_patches/series/2.6-rhel5.series b/lustre/kernel_patches/series/2.6-rhel5.series
index b202ffc..55f740a 100644 (file)
--- a/lustre/kernel_patches/series/2.6-rhel5.series
+++ b/lustre/kernel_patches/series/2.6-rhel5.series
@@ -22,3 +22,4 @@ quota-large-limits-rhel5.patch
 md-mmp-unplug-dev.patch
 prune-icache-use-trylock-rhel5.patch
 jbd-slab-race-2.6-rhel5.patch
+mpt-fusion-max-sge.patch