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Christoph Lameter 39743889aa [PATCH] Swap Migration V5: sys_migrate_pages interface ... sys_migrate_pages implementation using swap based page migration This is the original API proposed by Ray Bryant in his posts during the first half of 2005 on linux-mm@kvack.org and linux-kernel@vger.kernel.org. The intent of sys_migrate is to migrate memory of a process. A process may have migrated to another node. Memory was allocated optimally for the prior context. sys_migrate_pages allows to shift the memory to the new node. sys_migrate_pages is also useful if the processes available memory nodes have changed through cpuset operations to manually move the processes memory. Paul Jackson is working on an automated mechanism that will allow an automatic migration if the cpuset of a process is changed. However, a user may decide to manually control the migration. This implementation is put into the policy layer since it uses concepts and functions that are also needed for mbind and friends. The patch also provides a do_migrate_pages function that may be useful for cpusets to automatically move memory. sys_migrate_pages does not modify policies in contrast to Ray's implementation. The current code here is based on the swap based page migration capability and thus is not able to preserve the physical layout relative to it containing nodeset (which may be a cpuset). When direct page migration becomes available then the implementation needs to be changed to do a isomorphic move of pages between different nodesets. The current implementation simply evicts all pages in source nodeset that are not in the target nodeset. Patch supports ia64, i386 and x86_64. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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configs	[IA64-SGI] change default_sn2 to NR_CPUS==1024	19 years ago
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ia32	[IA64] Change SET_PERSONALITY to comply with comment in binfmt_elf.c.	19 years ago
kernel	[PATCH] Swap Migration V5: sys_migrate_pages interface	19 years ago
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mm	[IA64] Limit the maximum NODEDATA_ALIGN() offset	19 years ago
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pci	[IA64] incorrect return from ia64_pci_legacy_write()	19 years ago
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sn	[PATCH] driver kill hotplug word from sn and others fix	19 years ago
Kconfig	[PATCH] Fix Kconfig of DMA32 for ia64	19 years ago
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