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c340010e4b
linux/mm
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Lee Schermerhorn c340010e4b [PATCH] shrink_list(): skip anon pages if not may_swap 
Martin Hicks' page cache reclaim patch added the 'may_swap' flag to the
scan_control struct; and modified shrink_list() not to add anon pages to
the swap cache if may_swap is not asserted.

Ref:  http://marc.theaimsgroup.com/?l=linux-mm&m=111461480725322&w=4

However, further down, if the page is mapped, shrink_list() calls
try_to_unmap() which will call try_to_unmap_one() via try_to_unmap_anon ().
 try_to_unmap_one() will BUG_ON() an anon page that is NOT in the swap
cache.  Martin says he never encountered this path in his testing, but
agrees that it might happen.

This patch modifies shrink_list() to skip anon pages that are not already
in the swap cache when !may_swap, rather than just not adding them to the
cache.

Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:36 -07:00
..
bootmem.c [PATCH] swiotlb: make sure initial DMA allocations really are in DMA memory 2005-10-19 23:11:33 -07:00
fadvise.c [PATCH] xip: madvice/fadvice: execute in place 2005-06-24 00:06:42 -07:00
filemap_xip.c [PATCH] execute-in-place fixes 2005-07-15 09:54:50 -07:00
filemap.c [PATCH] gfp_t: mm/* (easy parts) 2005-10-28 08:16:47 -07:00
filemap.h [PATCH] xip: reduce code duplication 2005-06-24 00:06:41 -07:00
fremap.c [PATCH] Don't map the same page too much 2005-10-11 12:03:47 -07:00
highmem.c [PATCH] gfp_t: the rest 2005-10-28 08:16:51 -07:00
hugetlb.c [PATCH] Fix handling spurious page fault for hugetlb region 2005-10-20 09:02:07 -07:00
internal.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Kconfig [PATCH] fix mm/Kconfig spelling 2005-09-17 11:50:01 -07:00
madvise.c [PATCH] madvise: Avoid returning error code -EBADF for anonymous mappings 2005-10-11 09:46:54 -07:00
Makefile [PATCH] xip: fs/mm: execute in place 2005-06-24 00:06:41 -07:00
memory.c [PATCH] Fix handling spurious page fault for hugetlb region 2005-10-20 09:02:07 -07:00
mempolicy.c [PATCH] Remove near all BUGs in mm/mempolicy.c 2005-10-29 21:40:35 -07:00
mempool.c [PATCH] gfp_t: mm/* (easy parts) 2005-10-28 08:16:47 -07:00
mincore.c [PATCH] freepgt: sys_mincore ignore FIRST_USER_PGD_NR 2005-04-19 13:29:20 -07:00
mlock.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mmap.c [PATCH] fix locking comment in unmap_region() 2005-09-21 10:11:55 -07:00
mprotect.c [PATCH] mm: add a note about partially hardcoded VM_* flags 2005-09-21 10:11:55 -07:00
mremap.c [PATCH] mm: move_pte to remap ZERO_PAGE 2005-09-28 07:46:40 -07:00
msync.c [PATCH] mm/msync.c cleanup 2005-10-29 21:40:36 -07:00
nommu.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
oom_kill.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
page_alloc.c [PATCH] mm: set per-cpu-pages lower threshold to zero 2005-10-29 21:40:35 -07:00
page_io.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
page-writeback.c [PATCH] timer initialization cleanup: DEFINE_TIMER 2005-09-09 14:03:48 -07:00
pdflush.c [PATCH] Cleanup patch for process freezing 2005-06-25 17:10:13 -07:00
prio_tree.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
readahead.c [PATCH] readahead: reset cache_hit earlier 2005-09-07 16:57:25 -07:00
rmap.c [PATCH] swaptoken tuning 2005-10-29 21:40:35 -07:00
shmem.c [PATCH] gfp_t: mm/* (easy parts) 2005-10-28 08:16:47 -07:00
slab.c [PATCH] gfp_t: mm/* (easy parts) 2005-10-28 08:16:47 -07:00
sparse.c [PATCH] sparsemem extreme: hotplug preparation 2005-09-05 00:05:38 -07:00
swap_state.c [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
swap.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
swapfile.c [PATCH] Fix bd_claim() error code. 2005-09-22 22:17:37 -07:00
thrash.c [PATCH] swaptoken tuning 2005-10-29 21:40:35 -07:00
tiny-shmem.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
truncate.c [PATCH] DocBook: fix some descriptions 2005-05-01 08:59:26 -07:00
vmalloc.c [PATCH] vmalloc_node 2005-10-29 21:40:35 -07:00
vmscan.c [PATCH] shrink_list(): skip anon pages if not may_swap 2005-10-29 21:40:36 -07:00