The patch titled
Subject: slab: make create_kmalloc_cache() work with 32-bit sizes
has been added to the -mm tree. Its filename is
slab-make-create_kmalloc_cache-work-with-32-bit-sizes.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/slab-make-create_kmalloc_cache-work-with-32-bit-sizes.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/slab-make-create_kmalloc_cache-work-with-32-bit-sizes.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Subject: slab: make create_kmalloc_cache() work with 32-bit sizes
KMALLOC_MAX_CACHE_SIZE is 32-bit so is the largest kmalloc cache size.
Link: http://lkml.kernel.org/r/20180305200730.15812-4-adobriyan@xxxxxxxxx
Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
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.h | 8 ++++----
mm/slab_common.c | 6 +++---
2 files changed, 7 insertions(+), 7 deletions(-)
diff -puN mm/slab_common.c~slab-make-create_kmalloc_cache-work-with-32-bit-sizes mm/slab_common.c
--- a/mm/slab_common.c~slab-make-create_kmalloc_cache-work-with-32-bit-sizes
+++ a/mm/slab_common.c
@@ -939,9 +939,9 @@ void __init create_boot_cache(struct kme
s->refcount = -1; /* Exempt from merging for now */
}
-struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size,
- slab_flags_t flags, size_t useroffset,
- size_t usersize)
+struct kmem_cache *__init create_kmalloc_cache(const char *name,
+ unsigned int size, slab_flags_t flags,
+ unsigned int useroffset, unsigned int usersize)
{
struct kmem_cache *s = kmem_cache_zalloc(kmem_cache, GFP_NOWAIT);
diff -puN mm/slab.h~slab-make-create_kmalloc_cache-work-with-32-bit-sizes mm/slab.h
--- a/mm/slab.h~slab-make-create_kmalloc_cache-work-with-32-bit-sizes
+++ a/mm/slab.h
@@ -77,7 +77,7 @@ extern struct kmem_cache *kmem_cache;
/* A table of kmalloc cache names and sizes */
extern const struct kmalloc_info_struct {
const char *name;
- unsigned long size;
+ unsigned int size;
} kmalloc_info[];
#ifndef CONFIG_SLOB
@@ -93,9 +93,9 @@ struct kmem_cache *kmalloc_slab(size_t,
/* Functions provided by the slab allocators */
int __kmem_cache_create(struct kmem_cache *, slab_flags_t flags);
-extern struct kmem_cache *create_kmalloc_cache(const char *name, size_t size,
- slab_flags_t flags, size_t useroffset,
- size_t usersize);
+struct kmem_cache *create_kmalloc_cache(const char *name, unsigned int size,
+ slab_flags_t flags, unsigned int useroffset,
+ unsigned int usersize);
extern void create_boot_cache(struct kmem_cache *, const char *name,
size_t size, slab_flags_t flags, size_t useroffset,
size_t usersize);
_
Patches currently in -mm which might be from adobriyan@xxxxxxxxx are
slab-mark-kmalloc-machinery-as-__ro_after_init.patch
slab-fixup-calculate_alignment-argument-type.patch
slab-make-kmalloc_index-return-unsigned-int.patch
slab-make-kmalloc_size-return-unsigned-int.patch
slab-make-create_kmalloc_cache-work-with-32-bit-sizes.patch
slab-make-create_boot_cache-work-with-32-bit-sizes.patch
slab-make-kmem_cache_create-work-with-32-bit-sizes.patch
slab-make-size_index-array-u8.patch
slab-make-size_index_elem-unsigned-int.patch
slub-make-remote_node_defrag_ratio-unsigned-int.patch
slub-make-max_attr_size-unsigned-int.patch
slub-make-red_left_pad-unsigned-int.patch
slub-make-reserved-unsigned-int.patch
slub-make-align-unsigned-int.patch
slub-make-inuse-unsigned-int.patch
slub-make-cpu_partial-unsigned-int.patch
slub-make-offset-unsigned-int.patch
slub-make-object_size-unsigned-int.patch
slub-make-size-unsigned-int.patch
slab-make-kmem_cache_flags-accept-32-bit-object-size.patch
kasan-make-kasan_cache_create-work-with-32-bit-slab-cache-sizes.patch
slab-make-usercopy-region-32-bit.patch
slub-make-slab_index-return-unsigned-int.patch
slub-make-struct-kmem_cache_order_objects-x-unsigned-int.patch
slub-make-size_from_object-return-unsigned-int.patch
slab-use-32-bit-arithmetic-in-freelist_randomize.patch
proc-do-less-stuff-under-pde_unload_lock.patch
proc-move-proc-sysvipc-creation-to-where-it-belongs.patch
proc-faster-open-close-of-files-without-release-hook.patch
proc-randomize-struct-pde_opener.patch
proc-move-struct-pde_opener-to-kmem-cache.patch
proc-account-struct-pde_opener.patch
proc-check-permissions-earlier-for-proc-wchan.patch
proc-use-set_puts-at-proc-wchan.patch
proc-test-proc-self-wchan.patch
proc-test-proc-self-syscall.patch
uts-create-struct-uts_namespace-from-kmem_cache.patch
seq_file-delete-small-value-optimization.patch
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