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authorPaul Jackson <pj@sgi.com>2006-03-24 03:16:04 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-24 07:33:22 -0800
commit44110fe385af23ca5eee8a6ad4ff55d50339097a (patch)
tree50ed2bfe054b8e35968d8e4a5fbe95c8b3db843b /fs/romfs
parent825a46af5ac171f9f41f794a0a00165588ba1589 (diff)
downloadlinux-stericsson-44110fe385af23ca5eee8a6ad4ff55d50339097a.tar.gz
[PATCH] cpuset memory spread page cache implementation and hooks
Change the page cache allocation calls to support cpuset memory spreading. See the previous patch, cpuset_mem_spread, for an explanation of cpuset memory spreading. On systems without cpusets configured in the kernel, this is no change. On systems with cpusets configured in the kernel, but the "memory_spread" cpuset option not enabled for the current tasks cpuset, this adds a call to a cpuset routine and failed bit test of the processor state flag PF_SPREAD_PAGE. On tasks in cpusets with "memory_spread" enabled, this adds a call to a cpuset routine that computes which of the tasks mems_allowed nodes should be preferred for this allocation. If memory spreading applies to a particular allocation, then any other NUMA mempolicy does not apply. Signed-off-by: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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