mm/slab_common: Improve error handling in kmem_cache_create

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Instead of using s == NULL use an errorcode. This allows much more
detailed diagnostics as to what went wrong. As we add more functionality
from the slab allocators to the common kmem_cache_create() function we will
also add more error conditions.

Print the error code during the panic as well as in a warning if the module
can handle failure. The API for kmem_cache_create() currently does not allow
the returning of an error code. Return NULL but log the cause of the problem
in the syslog.

Reviewed-by: Glauber Costa <glommer@parallels.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

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Christoph Lameter 2012-09-05 00:20:33 +00:00 • committed by Pekka Enberg

parent 208c4358dc

commit 686d550d22

1 changed files with 24 additions and 4 deletions

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mm/slab_common.c

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