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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2018-11-29 14:07:03 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-12-04 19:45:01 +1100 |
| commit | 129dd323ddb808ee2fbd9f2a89d97d2cc7959790 (patch) | |
| tree | cd58e1b86b85d4e34c65a28881bbbeb5c7a73231 /arch/powerpc/mm | |
| parent | 32ea4c14999006fea541b5f78d008fffc1656849 (diff) | |
| download | linux-129dd323ddb808ee2fbd9f2a89d97d2cc7959790.tar.gz | |
powerpc/mm: enable the use of page table cache of order 0
hugepages uses a cache of order 0. Lets allow page tables of order 0 in the common part in order to avoid open coding in hugetlb Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/init-common.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/powerpc/mm/init-common.c b/arch/powerpc/mm/init-common.c index 2b656e67f2ea..41190f2b60c2 100644 --- a/arch/powerpc/mm/init-common.c +++ b/arch/powerpc/mm/init-common.c @@ -40,7 +40,7 @@ static void pmd_ctor(void *addr) memset(addr, 0, PMD_TABLE_SIZE); } -struct kmem_cache *pgtable_cache[MAX_PGTABLE_INDEX_SIZE]; +struct kmem_cache *pgtable_cache[MAX_PGTABLE_INDEX_SIZE + 1]; EXPORT_SYMBOL_GPL(pgtable_cache); /* used by kvm_hv module */ /* @@ -71,7 +71,7 @@ void pgtable_cache_add(unsigned shift, void (*ctor)(void *)) * moment, gcc doesn't seem to recognize is_power_of_2 as a * constant expression, so so much for that. */ BUG_ON(!is_power_of_2(minalign)); - BUG_ON((shift < 1) || (shift > MAX_PGTABLE_INDEX_SIZE)); + BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE); if (PGT_CACHE(shift)) return; /* Already have a cache of this size */ @@ -83,7 +83,7 @@ void pgtable_cache_add(unsigned shift, void (*ctor)(void *)) panic("Could not allocate pgtable cache for order %d", shift); kfree(name); - pgtable_cache[shift - 1] = new; + pgtable_cache[shift] = new; pr_debug("Allocated pgtable cache for order %d\n", shift); } |