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mm/slab: delete cache_alloc_debugcheck_before() 

It only does a might_sleep_if(GFP_RECLAIM) check, which is already covered
by the might_alloc() in slab_pre_alloc_hook().  And all callers of
cache_alloc_debugcheck_before() call that beforehand already.

Link: https://lkml.kernel.org/r/20220605152539.3196045-2-daniel.vetter@ffwll.ch
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Daniel Vetter 2022-06-05 17:25:38 +02:00 committed by akpm
parent 446ec83805
commit a396724443
1 changed files with 0 additions and 10 deletions
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10
mm/slab.c
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@ -2958,12 +2958,6 @@ direct_grow:
return ac->entry[--ac->avail];
}
static inline void cache_alloc_debugcheck_before(struct kmem_cache *cachep,
gfp_t flags)
{
might_sleep_if(gfpflags_allow_blocking(flags));
}
#if DEBUG
static void *cache_alloc_debugcheck_after(struct kmem_cache *cachep,
gfp_t flags, void *objp, unsigned long caller)
@ -3205,7 +3199,6 @@ slab_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid, size_t orig_
if (unlikely(ptr))
goto out_hooks;
cache_alloc_debugcheck_before(cachep, flags);
local_irq_save(save_flags);
if (nodeid == NUMA_NO_NODE)
@ -3290,7 +3283,6 @@ slab_alloc(struct kmem_cache *cachep, struct list_lru *lru, gfp_t flags,
if (unlikely(objp))
goto out;
cache_alloc_debugcheck_before(cachep, flags);
local_irq_save(save_flags);
objp = __do_cache_alloc(cachep, flags);
local_irq_restore(save_flags);
@ -3527,8 +3519,6 @@ int kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size,
if (!s)
return 0;
cache_alloc_debugcheck_before(s, flags);
local_irq_disable();
for (i = 0; i < size; i++) {
void *objp = kfence_alloc(s, s->object_size, flags) ?: __do_cache_alloc(s, flags);