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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-20 14:41:47 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-20 14:41:47 -0800 |
| commit | 8b2e9b712f6139df9c754af0d67fecc4bbc88545 (patch) | |
| tree | 4260126ffc11a2e60d92f3f9304bc2ea02516332 /mm/memory.c | |
| parent | b5898cd057001336888b6aff601385b5f5e79b01 (diff) | |
| download | linux-8b2e9b712f6139df9c754af0d67fecc4bbc88545.tar.bz2 | |
Revert "mm: create a separate slab for page->ptl allocation"
This reverts commit ea1e7ed33708c7a760419ff9ded0a6cb90586a50.
Al points out that while the commit *does* actually create a separate
slab for the page->ptl allocation, that slab is never actually used, and
the code continues to use kmalloc/kfree.
Damien Wyart points out that the original patch did have the conversion
to use kmem_cache_alloc/free, so it got lost somewhere on its way to me.
Revert the half-arsed attempt that didn't do anything. If we really do
want the special slab (remember: this is all relevant just for debug
builds, so it's not necessarily all that critical) we might as well redo
the patch fully.
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Kirill A Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/mm/memory.c b/mm/memory.c index 0409e8f43fa0..5d9025f3b3e1 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4272,13 +4272,6 @@ void copy_user_huge_page(struct page *dst, struct page *src, #endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_HUGETLBFS */ #if USE_SPLIT_PTE_PTLOCKS && BLOATED_SPINLOCKS -static struct kmem_cache *page_ptl_cachep; -void __init ptlock_cache_init(void) -{ - page_ptl_cachep = kmem_cache_create("page->ptl", sizeof(spinlock_t), 0, - SLAB_PANIC, NULL); -} - bool ptlock_alloc(struct page *page) { spinlock_t *ptl; |