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bbdb396a60
linux/mm
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Martin Bligh bbdb396a60 [PATCH] Use min of two prio settings in calculating distress for reclaim 
If try_to_free_pages / balance_pgdat are called with a gfp_mask specifying
GFP_IO and/or GFP_FS, they will reclaim the requisite number of pages, and the
reset prev_priority to DEF_PRIORITY (or to some other high (ie: unurgent)
value).

However, another reclaimer without those gfp_mask flags set (say, GFP_NOIO)
may still be struggling to reclaim pages.  The concurrent overwrite of
zone->prev_priority will cause this GFP_NOIO thread to unexpectedly cease
deactivating mapped pages, thus causing reclaim difficulties.

Fix this is to key the distress calculation not off zone->prev_priority, but
also take into account the local caller's priority by using
min(zone->prev_priority, sc->priority)

Signed-off-by: Martin J. Bligh <mbligh@google.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-28 11:30:51 -07:00
..
allocpercpu.c [PATCH] Extract the allocpercpu functions from the slab allocator 2006-09-26 08:48:51 -07:00
backing-dev.c [PATCH] separate bdi congestion functions from queue congestion functions 2006-10-20 10:26:35 -07:00
bootmem.c [PATCH] bootmem: use MAX_DMA_ADDRESS instead of LOW32LIMIT 2006-09-26 08:48:49 -07:00
bounce.c [PATCH] BLOCK: Separate the bounce buffering code from the highmem code [try #6] 2006-09-30 20:32:11 +02:00
fadvise.c [PATCH] fadvise() make POSIX_FADV_NOREUSE a no-op 2006-08-06 08:57:47 -07:00
filemap_xip.c [PATCH] mark address_space_operations const 2006-06-28 14:59:04 -07:00
filemap.c [PATCH] mm: clean up pagecache allocation 2006-10-28 11:30:50 -07:00
filemap.h Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
fremap.c [PATCH] paravirt: pte clear not present 2006-10-01 00:39:33 -07:00
highmem.c [PATCH] BLOCK: Separate the bounce buffering code from the highmem code [try #6] 2006-09-30 20:32:11 +02:00
hugetlb.c [PATCH] hugetlb: fix linked list corruption in unmap_hugepage_range() 2006-10-11 11:14:15 -07:00
internal.h [PATCH] mm: VM_BUG_ON 2006-09-26 08:48:44 -07:00
Kconfig Fix "can not" in Documentation and Kconfig 2006-10-03 22:53:09 +02:00
madvise.c [PATCH] Fix MADV_REMOVE protection checking 2006-04-17 18:22:18 -07:00
Makefile [PATCH] separate bdi congestion functions from queue congestion functions 2006-10-20 10:26:35 -07:00
memory_hotplug.c [PATCH] hot-add-mem x86_64: use CONFIG_MEMORY_HOTPLUG_RESERVE 2006-10-01 00:39:18 -07:00
memory.c [PATCH] mm: D-cache aliasing issue in cow_user_page 2006-10-20 10:26:43 -07:00
mempolicy.c [PATCH] Fix do_mbind warning with CONFIG_MIGRATION=n 2006-10-11 11:14:19 -07:00
mempool.c [PATCH] dm: work around mempool_alloc, bio_alloc_bioset deadlocks 2006-09-01 11:39:09 -07:00
migrate.c [PATCH] BLOCK: Make it possible to disable the block layer [try #6] 2006-09-30 20:52:31 +02:00
mincore.c [PATCH] freepgt: sys_mincore ignore FIRST_USER_PGD_NR 2005-04-19 13:29:20 -07:00
mlock.c [PATCH] move capable() to capability.h 2006-01-11 18:42:13 -08:00
mmap.c Fix VM_MAYEXEC calculation 2006-10-15 14:09:55 -07:00
mmzone.c [PATCH] mm/mmzone.c: EXPORT_UNUSED_SYMBOL 2006-07-10 13:24:17 -07:00
mprotect.c [PATCH] paravirt: lazy mmu mode hooks.patch 2006-10-01 00:39:33 -07:00
mremap.c [PATCH] paravirt: lazy mmu mode hooks.patch 2006-10-01 00:39:33 -07:00
msync.c [PATCH] mm: msync() cleanup 2006-09-26 08:48:45 -07:00
nommu.c Spelling fix: "control" instead of "cotrol" 2006-10-03 23:21:02 +02:00
oom_kill.c [PATCH] OOM killer meets userspace headers 2006-10-20 10:26:38 -07:00
page_alloc.c [PATCH] vmscan: Fix temp_priority race 2006-10-28 11:30:50 -07:00
page_io.c [PATCH] swsusp: read speedup 2006-09-26 08:48:58 -07:00
page-writeback.c [PATCH] separate bdi congestion functions from queue congestion functions 2006-10-20 10:26:35 -07:00
pdflush.c [PATCH] pdflush: handle resume wakeups 2006-06-25 10:01:06 -07:00
prio_tree.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
readahead.c Merge rsync://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2006-07-03 10:25:08 -04:00
rmap.c [PATCH] mm: more commenting on lock ordering 2006-10-20 10:26:44 -07:00
shmem_acl.c [PATCH] Fix typos in mm/shmem_acl.c 2006-10-11 11:14:23 -07:00
shmem.c [PATCH] separate bdi congestion functions from queue congestion functions 2006-10-20 10:26:35 -07:00
slab.c [PATCH] Slab: Do not fallback to nodes that have not been bootstrapped yet 2006-10-21 13:35:06 -07:00
slob.c [PATCH] Make kmem_cache_destroy() return void 2006-09-27 08:26:11 -07:00
sparse.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
swap_state.c [PATCH] lockdep: locking init debugging improvement 2006-07-03 15:27:02 -07:00
swap.c [PATCH] mm/: make functions static 2006-09-26 08:48:45 -07:00
swapfile.c [PATCH] valid_swaphandles() fix 2006-09-29 09:18:23 -07:00
thrash.c [PATCH] temporarily disable swap token on memory pressure 2005-11-28 14:42:25 -08:00
tiny-shmem.c [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree 2006-06-26 12:25:08 -07:00
truncate.c [PATCH] invalidate: remove_mapping() fix 2006-10-17 08:18:43 -07:00
util.c [PATCH] slab: clean up leak tracking ifdefs a little bit 2006-10-04 07:55:13 -07:00
vmalloc.c [PATCH] vmalloc(): don't pass __GFP_ZERO to slab 2006-10-17 08:18:44 -07:00
vmscan.c [PATCH] Use min of two prio settings in calculating distress for reclaim 2006-10-28 11:30:51 -07:00
vmstat.c [PATCH] vmscan: Fix temp_priority race 2006-10-28 11:30:50 -07:00