[patch 019/181] mm/slab.c: clean code by removing redundant if condition

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From: Mateusz Nosek <mateusznosek0@xxxxxxxxx>
Subject: mm/slab.c: clean code by removing redundant if condition

The removed code was unnecessary and changed nothing in the flow, since in
case of returning NULL by 'kmem_cache_alloc_node' returning 'freelist'
from the function in question is the same as returning NULL.

Link: https://lkml.kernel.org/r/20200915230329.13002-1-mateusznosek0@xxxxxxxxx
Signed-off-by: Mateusz Nosek <mateusznosek0@xxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/slab.c |    2 --
 1 file changed, 2 deletions(-)

--- a/mm/slab.c~mm-slabc-clean-code-by-removing-redundant-if-condition
+++ a/mm/slab.c
@@ -2305,8 +2305,6 @@ static void *alloc_slabmgmt(struct kmem_
 		/* Slab management obj is off-slab. */
 		freelist = kmem_cache_alloc_node(cachep->freelist_cache,
 					      local_flags, nodeid);
-		if (!freelist)
-			return NULL;
 	} else {
 		/* We will use last bytes at the slab for freelist */
 		freelist = addr + (PAGE_SIZE << cachep->gfporder) -
_




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