kernel/Documentation, branch linux-2.6.18.y

add utsrelease.h to the dontdiff file

2006-10-13T20:23:28Z

Signed-off-by: Dave Jones Signed-off-by: Greg Kroah-Hartman

zone_reclaim: dynamic slab reclaim

2006-10-13T20:23:22Z

http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=0ff38490c836dc379ff7ec45b10a15a662f4e5f6 Currently one can enable slab reclaim by setting an explicit option in /proc/sys/vm/zone_reclaim_mode. Slab reclaim is then used as a final option if the freeing of unmapped file backed pages is not enough to free enough pages to allow a local allocation. However, that means that the slab can grow excessively and that most memory of a node may be used by slabs. We have had a case where a machine with 46GB of memory was using 40-42GB for slab. Zone reclaim was effective in dealing with pagecache pages. However, slab reclaim was only done during global reclaim (which is a bit rare on NUMA systems). This patch implements slab reclaim during zone reclaim. Zone reclaim occurs if there is a danger of an off node allocation. At that point we 1. Shrink the per node page cache if the number of pagecache pages is more than min_unmapped_ratio percent of pages in a zone. 2. Shrink the slab cache if the number of the nodes reclaimable slab pages (patch depends on earlier one that implements that counter) are more than min_slab_ratio (a new /proc/sys/vm tunable). The shrinking of the slab cache is a bit problematic since it is not node specific. So we simply calculate what point in the slab we want to reach (current per node slab use minus the number of pages that neeed to be allocated) and then repeately run the global reclaim until that is unsuccessful or we have reached the limit. I hope we will have zone based slab reclaim at some point which will make that easier. The default for the min_slab_ratio is 5% Also remove the slab option from /proc/sys/vm/zone_reclaim_mode. [akpm@osdl.org: cleanups] Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

Revert mmiocfg heuristics and blacklist changes

2006-09-19T15:15:22Z

This reverts commits 11012d419cfc0e0f78ca356aca03674217910124 and 40dd2d20f220eda1cd0da8ea3f0f9db8971ba237, which allowed us to use the MMIO accesses for PCI config cycles even without the area being marked reserved in the e820 memory tables. Those changes were needed for EFI-environment Intel macs, but broke some newer Intel 965 boards, so for now it's better to revert to our old 2.6.17 behaviour and at least avoid introducing any new breakage. Andi Kleen has a set of patches that work with both EFI and the broken Intel 965 boards, which will be applied once they get wider testing. Cc: Arjan van de Ven Cc: Edgar Hucek Cc: Andi Kleen Signed-off-by: Linus Torvalds

[NET]: Mark frame diverter for future removal.

2006-09-18T06:21:14Z

The code for frame diverter is unmaintained and has bitrotted. The number of users is very small and the code has lots of problems. If anyone is using it, they maybe exposing themselves to bad packet attacks. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

[IPVS]: Document the ports option to ip_vs_ftp in kernel-parameters.txt

2006-09-18T06:21:03Z

I'm not sure if documenting this here is appropriate, but if it is, here is some text to put there. Signed-Off-By: Simon Horman Signed-off-by: David S. Miller

[TCP]: Turn ABC off.

2006-09-18T06:21:02Z

Turn Appropriate Byte Count off by default because it unfairly penalizes applications that do small writes. Add better documentation to describe what it is so users will understand why they might want to turn it on. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

[PATCH] cciss: version update, new hw

2006-09-13T14:32:16Z

Add support for new hardware and bumps the version to 3.6.10. It seems there were several changes introduced including soft_irq. I decided to bump the major number to reflect these changes. Since we're still supporting older vendor kernels I need some way differentiate between kernel versions <=2.6.10 and newer kernels >=2.6.16. Signed-off-by: Mike Miller Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] x86: reserve a boot-loader ID number for Xen

2006-09-13T14:32:14Z

Claim an ID number for Xen in the LOADER_TYPE field. Also, keep the table in zero-page.txt consistent with boot.txt. [hpa says: 6 was skipped because I couldn't rule out that it hadn't been unofficially used. It seemed easier to skip it for now.] Signed-off-by: Jeremy Fitzhardinge Acked-by: "H. Peter Anvin" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] We can not allow anonymous contributions to the kernel

2006-09-13T14:32:14Z

The DCO does not mean anything if we allow anonymous contributors to the kernel. As this is an open source project, we need to do everything in the open. Signed-off-by: Greg Kroah-Hartman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] schedule obsolete OSS drivers for removal, 2nd round

2006-09-01T18:39:09Z

This patch schedules obsolete OSS drivers (with ALSA drivers that support the same hardware) for removal. A rationale of the patch is in http://lkml.org/lkml/2006/7/11/186 Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds