linux-kernel-test/include
Jeff Mahoney 1cf3eb2ff6 kmalloc: return NULL instead of link failure
The SLAB kmalloc with a constant value isn't consistent with the other
implementations because it bails out with __you_cannot_kmalloc_that_much
rather than returning NULL and properly allowing the caller to fall back
to vmalloc or take other action.  This doesn't happen with a non-constant
value or with SLOB or SLUB.

Starting with 2.6.28, I've been seeing build failures on s390x.  This is
due to init_section_page_cgroup trying to allocate 2.5MB when the max size
for a kmalloc on s390x is 2MB.

It's failing because the value is constant.  The workarounds at the call
size are ugly and the caller shouldn't have to change behavior depending
on what the backend of the API is.

So, this patch eliminates the link failure and returns NULL like the other
implementations.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: <stable@kernel.org>		[2.6.28.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2009-01-27 23:48:59 +02:00
..
acpi Merge branch 'simplify_PRT' into release 2009-01-09 03:41:08 -05:00
asm-arm
asm-frv NOMMU: Make VMAs per MM as for MMU-mode linux 2009-01-08 12:04:47 +00:00
asm-generic x86 PAT: change track_pfn_vma_new to take pgprot_t pointer param 2009-01-13 19:13:01 +01:00
asm-h8300
asm-m32r NOMMU: Make VMAs per MM as for MMU-mode linux 2009-01-08 12:04:47 +00:00
asm-m68k m68k: Wire up sys_restart_syscall 2009-01-12 20:56:43 +01:00
asm-mn10300 mn10300: introduce asm/swab.h 2009-01-06 18:10:29 -08:00
crypto
drm
keys
linux kmalloc: return NULL instead of link failure 2009-01-27 23:48:59 +02:00
math-emu
media
mtd trivial: fix then -> than typos in comments and documentation 2009-01-06 11:28:06 +01:00
net wimax: fix typo in kernel-doc for debugfs_dentry in struct wimax_dev 2009-01-11 00:06:32 -08:00
pcmcia
rdma
rxrpc
scsi [SCSI] fc transport: restore missing dev_loss_tmo callback to LLDD 2009-01-06 09:43:33 -06:00
sound Merge branch 'topic/asoc' into for-linus 2009-01-12 14:05:50 +01:00
trace
video
xen xen: add xenfs to allow usermode <-> Xen interaction 2009-01-08 08:30:59 -08:00
Kbuild