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| author | Christoph Lameter <clameter@sgi.com> | 2006-03-22 00:09:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 07:54:06 -0800 |
| commit | b20a35035f983f4ac7e29c4a68f30e43510007e0 (patch) | |
| tree | fdf090ddddbcc275349f62f71adc98649e2c683b /mm/Kconfig | |
| parent | 442295c94bf650221af3ef20fc68fa3e93876818 (diff) | |
| download | lwn-b20a35035f983f4ac7e29c4a68f30e43510007e0.tar.gz lwn-b20a35035f983f4ac7e29c4a68f30e43510007e0.zip | |
[PATCH] page migration reorg
Centralize the page migration functions in anticipation of additional
tinkering. Creates a new file mm/migrate.c
1. Extract buffer_migrate_page() from fs/buffer.c
2. Extract central migration code from vmscan.c
3. Extract some components from mempolicy.c
4. Export pageout() and remove_from_swap() from vmscan.c
5. Make it possible to configure NUMA systems without page migration
and non-NUMA systems with page migration.
I had to so some #ifdeffing in mempolicy.c that may need a cleanup.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/Kconfig')
| -rw-r--r-- | mm/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index a9cb80ae6409..bd80460360db 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -137,5 +137,11 @@ config SPLIT_PTLOCK_CPUS # support for page migration # config MIGRATION + bool "Page migration" def_bool y if NUMA || SPARSEMEM || DISCONTIGMEM depends on SWAP + help + Allows the migration of the physical location of pages of processes + while the virtual addresses are not changed. This is useful for + example on NUMA systems to put pages nearer to the processors accessing + the page. |