android_kernel_xiaomi_sm8350/mm
Christoph Lameter 49d2e9cc45 [PATCH] Swap Migration V5: migrate_pages() function
This adds the basic page migration function with a minimal implementation that
only allows the eviction of pages to swap space.

Page eviction and migration may be useful to migrate pages, to suspend
programs or for remapping single pages (useful for faulty pages or pages with
soft ECC failures)

The process is as follows:

The function wanting to migrate pages must first build a list of pages to be
migrated or evicted and take them off the lru lists via isolate_lru_page().
isolate_lru_page determines that a page is freeable based on the LRU bit set.

Then the actual migration or swapout can happen by calling migrate_pages().

migrate_pages does its best to migrate or swapout the pages and does multiple
passes over the list.  Some pages may only be swappable if they are not dirty.
 migrate_pages may start writing out dirty pages in the initial passes over
the pages.  However, migrate_pages may not be able to migrate or evict all
pages for a variety of reasons.

The remaining pages may be returned to the LRU lists using putback_lru_pages().

Changelog V4->V5:
- Use the lru caches to return pages to the LRU

Changelog V3->V4:
- Restructure code so that applying patches to support full migration does
  require minimal changes. Rename swapout_pages() to migrate_pages().

Changelog V2->V3:
- Extract common code from shrink_list() and swapout_pages()

Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: "Michael Kerrisk" <mtk-manpages@gmx.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:12:41 -08:00
..
bootmem.c [PATCH] FRV: Clean up bootmem allocator's page freeing algorithm 2006-01-06 08:33:26 -08:00
fadvise.c [PATCH] xip: madvice/fadvice: execute in place 2005-06-24 00:06:42 -07:00
filemap_xip.c [PATCH] mm: rmap with inner ptlock 2005-10-29 21:40:41 -07:00
filemap.c [PATCH] find_lock_page(): call __lock_page() directly. 2006-01-06 08:33:26 -08:00
filemap.h [PATCH] xip: reduce code duplication 2005-06-24 00:06:41 -07:00
fremap.c VM: add common helper function to create the page tables 2005-11-29 14:03:14 -08:00
highmem.c [PATCH] gfp_t: the rest 2005-10-28 08:16:51 -07:00
hugetlb.c [PATCH] hugepages: fold find_or_alloc_pages into huge_no_page() 2006-01-06 08:33:23 -08:00
internal.h [PATCH] FRV: Clean up bootmem allocator's page freeing algorithm 2006-01-06 08:33:26 -08:00
Kconfig [PATCH] allow flatmem to be disabled when only sparsemem is implemented 2006-01-06 08:33:37 -08:00
madvise.c [PATCH] madvise(MADV_REMOVE): remove pages from tmpfs shm backing store 2006-01-06 08:33:22 -08:00
Makefile [PATCH] memory hotplug: sysfs and add/remove functions 2005-10-29 21:40:44 -07:00
memory_hotplug.c [PATCH] memhotplug: __add_section remove unused pgdat definition 2006-01-06 08:33:21 -08:00
memory.c [PATCH] mm: pfault optimisation 2006-01-06 08:33:27 -08:00
mempolicy.c [PATCH] mm: move determination of policy_zone into page allocator 2006-01-06 08:33:28 -08:00
mempool.c [PATCH] gfp_t: mm/* (easy parts) 2005-10-28 08:16:47 -07:00
mincore.c
mlock.c
mmap.c Make sure we copy pages inserted with "vm_insert_page()" on fork 2005-12-16 10:21:23 -08:00
mprotect.c [PATCH] unpaged: private write VM_RESERVED 2005-11-22 09:13:42 -08:00
mremap.c Make sure we copy pages inserted with "vm_insert_page()" on fork 2005-12-16 10:21:23 -08:00
msync.c mm: re-architect the VM_UNPAGED logic 2005-11-28 14:34:23 -08:00
nommu.c [PATCH] NOMMU: Make SYSV IPC SHM use ramfs facilities on NOMMU 2006-01-06 08:33:32 -08:00
oom_kill.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
page_alloc.c [PATCH] mm: free_pages opt 2006-01-08 20:12:40 -08:00
page_io.c [PATCH] mm: split page table lock 2005-10-29 21:40:42 -07:00
page-writeback.c identify multipage ->writepages() calls 2006-01-06 14:58:38 -05:00
pdflush.c [PATCH] Swap Migration V5: PF_SWAPWRITE to allow writing to swap 2006-01-08 20:12:41 -08:00
prio_tree.c
readahead.c [PATCH] add AOP_TRUNCATED_PAGE, prepend AOP_ to WRITEPAGE_ACTIVATE 2006-01-03 11:45:42 -08:00
rmap.c [PATCH] mm: page_state opt 2006-01-06 08:33:29 -08:00
shmem.c [PATCH] NOMMU: Make SYSV IPC SHM use ramfs facilities on NOMMU 2006-01-06 08:33:32 -08:00
slab.c [PATCH] slab: fix code formatting 2006-01-08 20:12:39 -08:00
sparse.c [PATCH] memory hotplug: move section_mem_map alloc to sparse.c 2005-10-29 21:40:44 -07:00
swap_state.c [PATCH] mm: free_pages_and_swap_cache opt 2006-01-06 08:33:24 -08:00
swap.c [PATCH] consolidate lru_add_drain() and lru_drain_cache() 2006-01-06 08:33:28 -08:00
swapfile.c [PATCH] mm: add a new function (needed for swap suspend) 2006-01-06 08:33:43 -08:00
thrash.c [PATCH] temporarily disable swap token on memory pressure 2005-11-28 14:42:25 -08:00
tiny-shmem.c [PATCH] NOMMU: Make SYSV IPC SHM use ramfs facilities on NOMMU 2006-01-06 08:33:32 -08:00
truncate.c [PATCH] drop-pagecache 2006-01-08 20:12:40 -08:00
vmalloc.c [PATCH] kernel-doc: fix warnings in vmalloc.c 2005-11-07 07:53:56 -08:00
vmscan.c [PATCH] Swap Migration V5: migrate_pages() function 2006-01-08 20:12:41 -08:00