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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-10-01 22:20:11 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-10-01 22:20:11 -0400 |
| commit | bde17b90dd9712cb61a7ab0c1ccd0f7f6aa57957 (patch) | |
| tree | d4597bfde4f5d4a3a5729e5534c44993c6216352 /mm/slab.c | |
| parent | 1bca1000fa71a1092947b4a51928abe80a3316d2 (diff) | |
| parent | 676bd99178cd962ed24ffdad222b7069d330a969 (diff) | |
| download | kernel_replicant_linux-bde17b90dd9712cb61a7ab0c1ccd0f7f6aa57957.tar.gz kernel_replicant_linux-bde17b90dd9712cb61a7ab0c1ccd0f7f6aa57957.tar.bz2 kernel_replicant_linux-bde17b90dd9712cb61a7ab0c1ccd0f7f6aa57957.zip | |
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
"12 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
dmapool: fix overflow condition in pool_find_page()
thermal: avoid division by zero in power allocator
memcg: remove pcp_counter_lock
kprobes: use _do_fork() in samples to make them work again
drivers/input/joystick/Kconfig: zhenhua.c needs BITREVERSE
memcg: make mem_cgroup_read_stat() unsigned
memcg: fix dirty page migration
dax: fix NULL pointer in __dax_pmd_fault()
mm: hugetlbfs: skip shared VMAs when unmapping private pages to satisfy a fault
mm/slab: fix unexpected index mapping result of kmalloc_size(INDEX_NODE+1)
userfaultfd: remove kernel header include from uapi header
arch/x86/include/asm/efi.h: fix build failure
Diffstat (limited to 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/mm/slab.c b/mm/slab.c index c77ebe6cc87c..4fcc5dd8d5a6 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -2190,9 +2190,16 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) size += BYTES_PER_WORD; } #if FORCED_DEBUG && defined(CONFIG_DEBUG_PAGEALLOC) - if (size >= kmalloc_size(INDEX_NODE + 1) - && cachep->object_size > cache_line_size() - && ALIGN(size, cachep->align) < PAGE_SIZE) { + /* + * To activate debug pagealloc, off-slab management is necessary + * requirement. In early phase of initialization, small sized slab + * doesn't get initialized so it would not be possible. So, we need + * to check size >= 256. It guarantees that all necessary small + * sized slab is initialized in current slab initialization sequence. + */ + if (!slab_early_init && size >= kmalloc_size(INDEX_NODE) && + size >= 256 && cachep->object_size > cache_line_size() && + ALIGN(size, cachep->align) < PAGE_SIZE) { cachep->obj_offset += PAGE_SIZE - ALIGN(size, cachep->align); size = PAGE_SIZE; } |