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mm: fault-inject take over bootstrap kmem_cache check

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Remove the SLAB specific function slab_should_failslab(), by moving the
check against fault-injection for the bootstrap slab, into the shared
function should_failslab() (used by both SLAB and SLUB).

This is a step towards sharing alloc_hook's between SLUB and SLAB.

This bootstrap slab "kmem_cache" is used for allocating struct
kmem_cache objects to the allocator itself.

Signed-off-by: Jesper Dangaard Brouer <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Pekka Enberg <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Vladimir Davydov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jesper Dangaard Brouer 2016-03-15 14:53:38 -07:00 • committed by Linus Torvalds
commit fab9963a69
4 changed files with 14 additions and 17 deletions
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mm/slab.h
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@ -360,7 +360,7 @@ static inline struct kmem_cache *slab_pre_alloc_hook(struct kmem_cache *s,
lockdep_trace_alloc(flags);
might_sleep_if(gfpflags_allow_blocking(flags));
if (should_failslab(s->object_size, flags, s->flags))
if (should_failslab(s, flags))
return NULL;
return memcg_kmem_get_cache(s, flags);