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c73602ad31
Adjust the max_kernel_pages default to a quarter of totalram_pages, instead of nr_free_buffer_pages() / 4: the KSM pages themselves come from highmem, and even on a 16GB PAE machine, 4GB of KSM pages would only be pinning 32MB of lowmem with their rmap_items, so no need for the more obscure calculation (nor for its own special init function). There is no way for the user to switch KSM on if CONFIG_SYSFS is not enabled, so in that case default run to KSM_RUN_MERGE. Update KSM Documentation and Kconfig to reflect the new defaults. Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: Izik Eidus <ieidus@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| .gitignore | ||
| 00-INDEX | ||
| active_mm.txt | ||
| balance | ||
| hugetlbpage.txt | ||
| ksm.txt | ||
| locking | ||
| Makefile | ||
| map_hugetlb.c | ||
| numa | ||
| numa_memory_policy.txt | ||
| overcommit-accounting | ||
| page_migration | ||
| page-types.c | ||
| pagemap.txt | ||
| slabinfo.c | ||
| slub.txt | ||
| unevictable-lru.txt | ||