+ mm-slabc-clean-code-by-removing-redundant-if-condition.patch added to -mm tree

+ mm-slabc-clean-code-by-removing-redundant-if-condition.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/slab.c: clean code by removing redundant if condition
has been added to the -mm tree.  Its filename is
     mm-slabc-clean-code-by-removing-redundant-if-condition.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-slabc-clean-code-by-removing-redundant-if-condition.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-slabc-clean-code-by-removing-redundant-if-condition.patch

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------------------------------------------------------
From: Mateusz Nosek <mateusznosek0@gmail.com>
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@gmail.com
Signed-off-by: Mateusz Nosek <mateusznosek0@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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
@@ -2301,8 +2301,6 @@ 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) -
_

Patches currently in -mm which might be from mateusznosek0@gmail.com are

mm-slabc-clean-code-by-removing-redundant-if-condition.patch
mm-page_allocc-clean-code-by-removing-unnecessary-initialization.patch
mm-page_allocc-micro-optimization-remove-unnecessary-branch.patch
mm-compactionc-micro-optimization-remove-unnecessary-branch.patch