leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
28324d1df6
linux/mm
History
Oleg Nesterov 28324d1df6 [PATCH] select_bad_process(): kill a bogus PF_DEAD/TASK_DEAD check 
The only one usage of TASK_DEAD outside of last schedule path,

select_bad_process:

	for_each_task(p) {

		if (!p->mm)
			continue;
		...
			if (p->state == TASK_DEAD)
				continue;
		...

TASK_DEAD state is set at the end of do_exit(), this means that p->mm
was already set == NULL by exit_mm(), so this task was already rejected
by 'if (!p->mm)' above.

Note also that the caller holds tasklist_lock, this means that p can't
pass exit_notify() and then set TASK_DEAD when p->mm != NULL.

Also, remove open-coded is_init().

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-29 09:18:21 -07:00
..
allocpercpu.c [PATCH] Extract the allocpercpu functions from the slab allocator 2006-09-26 08:48:51 -07:00
bootmem.c [PATCH] bootmem: use MAX_DMA_ADDRESS instead of LOW32LIMIT 2006-09-26 08:48:49 -07:00
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: make filemap_nopage use NOPAGE_SIGBUS 2006-09-29 09:18:03 -07:00
filemap.h [PATCH] generic_file_buffered_write(): handle zero-length iovec segments 2006-06-29 10:26:20 -07:00
fremap.c [PATCH] mm: small cleanup of install_page() 2006-09-26 08:48:44 -07:00
highmem.c [PATCH] reduce MAX_NR_ZONES: move HIGHMEM counters into highmem.c/.h 2006-09-26 08:48:46 -07:00
hugetlb.c [PATCH] NUMA: Add zone_to_nid function 2006-09-26 08:48:52 -07:00
internal.h [PATCH] mm: VM_BUG_ON 2006-09-26 08:48:44 -07:00
Kconfig Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6 2006-06-29 10:49:17 -07:00
madvise.c [PATCH] Fix MADV_REMOVE protection checking 2006-04-17 18:22:18 -07:00
Makefile [PATCH] Extract the allocpercpu functions from the slab allocator 2006-09-26 08:48:51 -07:00
memory_hotplug.c [PATCH] memory hotadd fixes: enhance collision check 2006-08-06 08:57:49 -07:00
memory.c [PATCH] mm: fix a race condition under SMC + COW 2006-09-29 09:18:03 -07:00
mempolicy.c [PATCH] GFP_THISNODE for the slab allocator 2006-09-27 08:26:12 -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] Define easier to handle GFP_THISNODE 2006-09-26 08:48:50 -07:00
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 [PATCH] ZVC: Support NR_SLAB_RECLAIMABLE / NR_SLAB_UNRECLAIMABLE 2006-09-26 08:48:51 -07:00
mmzone.c [PATCH] mm/mmzone.c: EXPORT_UNUSED_SYMBOL 2006-07-10 13:24:17 -07:00
mprotect.c [PATCH] mm: optimize the new mprotect() code a bit 2006-09-26 08:48:44 -07:00
mremap.c [PATCH] lockdep: annotate mm 2006-07-03 15:27:07 -07:00
msync.c [PATCH] mm: msync() cleanup 2006-09-26 08:48:45 -07:00
nommu.c [PATCH] NOMMU: Make futexes work under NOMMU conditions 2006-09-27 08:26:15 -07:00
oom_kill.c [PATCH] select_bad_process(): kill a bogus PF_DEAD/TASK_DEAD check 2006-09-29 09:18:21 -07:00
page_alloc.c [PATCH] mm/page_alloc: use NULL instead of 0 for ptr 2006-09-27 08:26:13 -07:00
page_io.c [PATCH] swsusp: read speedup 2006-09-26 08:48:58 -07:00
page-writeback.c [PATCH] mm: non syncing lock_page() 2006-09-26 08:48:48 -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 spelling fixes 2006-06-26 18:35:02 +02:00
rmap.c [PATCH] mm: tracking shared dirty pages 2006-09-26 08:48:44 -07:00
shmem.c [PATCH] inode-diet: Eliminate i_blksize from the inode structure 2006-09-27 08:26:18 -07:00
slab.c [PATCH] single bit flip detector 2006-09-29 09:18:10 -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] swsusp: Fix swap_type_of 2006-08-27 11:01:28 -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] page invalidation cleanup 2006-09-27 08:26:12 -07:00
util.c [PATCH] slab: optimize constant-size kzalloc calls 2006-03-25 08:22:49 -08:00
vmalloc.c [PATCH] Mark __remove_vm_area() static 2006-09-27 08:26:13 -07:00
vmscan.c [PATCH] page invalidation cleanup 2006-09-27 08:26:12 -07:00
vmstat.c [PATCH] zone_statistics: Use hot node instead of cold zone_pgdat 2006-09-27 08:26:13 -07:00