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| author | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-06-10 21:05:53 +0400 |
|---|---|---|
| committer | Pekka Enberg <penberg@cs.helsinki.fi> | 2009-06-11 20:10:41 +0400 |
| commit | 441c7e0a2ed38827b48b907bd1fa29faba2017a3 (patch) | |
| tree | 7e614a14e34a39a63520600b810319da9f0f98ca | |
| parent | 991ec02cdca33b03a132a0cacfe6f0aa0be9aa8d (diff) | |
| download | linux-441c7e0a2ed38827b48b907bd1fa29faba2017a3.tar.xz | |
bootmem: use slab if bootmem is no longer available
As a preparation for initializing the slab allocator early, make sure the
bootmem allocator does not crash and burn if someone calls it after slab is up;
otherwise we'd need a flag day for switching to early slab.
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
| -rw-r--r-- | mm/bootmem.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c index daf92713f7de..457269c73e81 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -532,6 +532,9 @@ static void * __init alloc_arch_preferred_bootmem(bootmem_data_t *bdata, unsigned long size, unsigned long align, unsigned long goal, unsigned long limit) { + if (WARN_ON_ONCE(slab_is_available())) + return kzalloc(size, GFP_NOWAIT); + #ifdef CONFIG_HAVE_ARCH_BOOTMEM bootmem_data_t *p_bdata; |