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Joe Korty 6d2144d355 slab: NUMA slab allocator migration bugfix 
NUMA slab allocator cpu migration bugfix

The NUMA slab allocator (specifically, cache_alloc_refill)
is not refreshing its local copies of what cpu and what
numa node it is on, when it drops and reacquires the irq
block that it inherited from its caller.  As a result
those values become invalid if an attempt to migrate the
process to another numa node occured while the irq block
had been dropped.

The solution is to make cache_alloc_refill reload these
variables whenever it drops and reacquires the irq block.

The error is very difficult to hit.  When it does occur,
one gets the following oops + stack traceback bits in
check_spinlock_acquired:

	kernel BUG at mm/slab.c:2417
	cache_alloc_refill+0xe6
	kmem_cache_alloc+0xd0
	...

This patch was developed against 2.6.23, ported to and
compiled-tested only against 2.6.25-rc4.

Signed-off-by: Joe Korty <joe.korty@ccur.com>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
 		2008-03-06 16:21:50 -08:00
..
Kconfig sh: Bump number of quicklists for SH-5. 2008-01-28 13:18:55 +09:00
Makefile Memory controller: rename to Memory Resource Controller 2008-03-04 16:35:12 -08:00
allocpercpu.c alloc_percpu() fails to allocate percpu data 2008-03-04 16:35:11 -08:00
backing-dev.c mm/backing-dev.c: fix percpu_counter_destroy call bug in bdi_init 2007-12-05 09:21:18 -08:00
bootmem.c Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
bounce.c block: Initial support for data-less (or empty) barrier support 2007-10-16 11:03:56 +02:00
dmapool.c pool: Improve memory usage for devices which can't cross boundaries 2007-12-04 10:39:58 -05:00
fadvise.c check ADVICE of fadvise64_64 even if get_xip_page is given 2008-02-05 09:44:19 -08:00
filemap.c remove final fastcall users 2008-02-13 16:21:18 -08:00
filemap_xip.c Use pgoff_t instead of unsigned long 2008-02-08 09:22:32 -08:00
fremap.c sys_remap_file_pages: fix ->vm_file accounting 2008-02-05 09:44:07 -08:00
highmem.c mm: remove fastcall from mm/ 2008-02-05 09:44:18 -08:00
hugetlb.c hugetlb: fix pool shrinking while in restricted cpuset 2008-03-04 16:35:18 -08:00
internal.h Solve section mismatch for free_area_init_core. 2008-02-23 17:13:24 -08:00
madvise.c speed up madvise_need_mmap_write() usage 2007-07-16 09:05:36 -07:00
memcontrol.c memcg: fix oops on NULL lru list 2008-03-04 16:35:15 -08:00
memory.c memcg: when do_swap's do_wp_page fails 2008-03-04 16:35:14 -08:00
memory_hotplug.c Page allocator: clean up pcp draining functions 2008-02-05 09:44:17 -08:00
mempolicy.c d_path: Make seq_path() use a struct path argument 2008-02-14 21:17:08 -08:00
mempool.c spelling fixes: mm/ 2007-10-20 01:27:18 +02:00
migrate.c memcg: fix VM_BUG_ON from page migration 2008-03-04 16:35:14 -08:00
mincore.c [PATCH] mincore: vma crossing fix 2007-02-15 09:57:03 -08:00
mlock.c do not limit locked memory when RLIMIT_MEMLOCK is RLIM_INFINITY 2007-07-16 09:05:37 -07:00
mmap.c mm: special mapping nopage 2008-02-08 18:57:39 -08:00
mmzone.c [PATCH] remove EXPORT_UNUSED_SYMBOL'ed symbols 2006-12-07 08:39:44 -08:00
mprotect.c fix mprotect vma_wants_writenotify prot 2007-10-23 08:32:06 -07:00
mremap.c sparse pointer use of zero as null 2007-10-18 14:37:31 -07:00
msync.c Detach sched.h from mm.h 2007-05-21 09:18:19 -07:00
nommu.c nommu: add new vmalloc_user() and remap_vmalloc_range() interfaces. 2008-02-05 09:44:21 -08:00
oom_kill.c Memory controller: rename to Memory Resource Controller 2008-03-04 16:35:12 -08:00
page-writeback.c writeback: speed up writeback of big dirty files 2008-02-05 09:44:19 -08:00
page_alloc.c memcg: bad page if page_cgroup when free 2008-03-04 16:35:15 -08:00
page_io.c mm: fix PageUptodate data race 2008-02-05 09:44:19 -08:00
page_isolation.c memory hotremove: unset migrate type "ISOLATE" after removal 2007-11-14 18:45:38 -08:00
pagewalk.c maps4: introduce a generic page walker 2008-02-05 09:44:16 -08:00
pdflush.c Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
prio_tree.c spelling fixes: mm/ 2007-10-20 01:27:18 +02:00
quicklist.c quicklists: Only consider memory that can be used with GFP_KERNEL 2008-01-14 08:52:22 -08:00
readahead.c mm: bdi init hooks 2007-10-17 08:42:45 -07:00
rmap.c memcg: mm_match_cgroup not vm_match_cgroup 2008-03-04 16:35:14 -08:00
shmem.c memcg: mem_cgroup_charge never NULL 2008-03-04 16:35:15 -08:00
shmem_acl.c [PATCH] Fix typos in mm/shmem_acl.c 2006-10-11 11:14:23 -07:00
slab.c slab: NUMA slab allocator migration bugfix 2008-03-06 16:21:50 -08:00
slob.c slob: reduce external fragmentation by using three free lists 2008-02-05 09:44:19 -08:00
slub.c slub: Do not cross cacheline boundaries for very small objects 2008-03-06 16:21:50 -08:00
sparse-vmemmap.c memory hotplug fix: fix section mismatch in vmammap_allock_block() 2007-11-29 09:24:54 -08:00
sparse.c mm: fix section mismatch warning in sparse.c 2008-02-05 09:44:19 -08:00
swap.c memcg: move_lists on page not page_cgroup 2008-03-04 16:35:14 -08:00
swap_state.c memcgroup: revert swap_state mods 2008-02-07 08:42:20 -08:00
swapfile.c d_path: Make seq_path() use a struct path argument 2008-02-14 21:17:08 -08:00
thrash.c Bug in mm/thrash.c function grab_swap_token() 2007-05-11 08:29:32 -07:00
tiny-shmem.c Remove unused code from mm/tiny-shmem.c 2008-02-05 09:44:17 -08:00
truncate.c docbook: fix kernel-api source files 2008-03-03 10:47:14 -08:00
util.c fix mm/util.c:krealloc() 2007-11-14 18:45:41 -08:00
vmalloc.c CONFIG_HIGHPTE vs. sub-page page tables. 2008-02-08 09:22:42 -08:00
vmscan.c memcg: move_lists on page not page_cgroup 2008-03-04 16:35:14 -08:00
vmstat.c vmstat: remove prefetch 2008-02-05 09:44:18 -08:00