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mm/slub: remove the check for NULL kmalloc_caches 

If the same size kmalloc cache already exists, it should not be created
again. So there is the check for NULL kmalloc_caches before calling the
kmalloc creation function. However, new_kmalloc_cache() itself checks NULL
kmalloc_cahces before cache creation. Therefore, the NULL check is not
necessary in this function.

Signed-off-by: Hyunmin Lee <hyunminlr@gmail.com>
Co-developed-by: Jeungwoo Yoo <casionwoo@gmail.com>
Signed-off-by: Jeungwoo Yoo <casionwoo@gmail.com>
Co-developed-by: Sangyun Kim <sangyun.kim@snu.ac.kr>
Signed-off-by: Sangyun Kim <sangyun.kim@snu.ac.kr>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Hyunmin Lee 2024-04-24 23:04:22 +09:00 committed by Vlastimil Babka
parent 306c4ac989
commit 7338999ca3
1 changed files with 4 additions and 6 deletions
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10
mm/slab_common.c
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@ -917,16 +917,14 @@ void __init create_kmalloc_caches(void)
*/
for (type = KMALLOC_NORMAL; type < NR_KMALLOC_TYPES; type++) {
/* Caches that are NOT of the two-to-the-power-of size. */
if (KMALLOC_MIN_SIZE <= 32 && !kmalloc_caches[type][1])
if (KMALLOC_MIN_SIZE <= 32)
new_kmalloc_cache(1, type);
if (KMALLOC_MIN_SIZE <= 64 && !kmalloc_caches[type][2])
if (KMALLOC_MIN_SIZE <= 64)
new_kmalloc_cache(2, type);
/* Caches that are of the two-to-the-power-of size. */
for (i = KMALLOC_SHIFT_LOW; i <= KMALLOC_SHIFT_HIGH; i++) {
if (!kmalloc_caches[type][i])
new_kmalloc_cache(i, type);
}
for (i = KMALLOC_SHIFT_LOW; i <= KMALLOC_SHIFT_HIGH; i++)
new_kmalloc_cache(i, type);
}
#ifdef CONFIG_RANDOM_KMALLOC_CACHES
random_kmalloc_seed = get_random_u64();