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slub: Use kmem_cache flags to detect if slab is in debugging mode.

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The cacheline with the flags is reachable from the hot paths after the
percpu allocator changes went in. So there is no need anymore to put a
flag into each slab page. Get rid of the SlubDebug flag and use
the flags in kmem_cache instead.

Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
This commit is contained in:
Christoph Lameter
2010-07-09 14:07:14 -05:00
committed by Pekka Enberg
parent f5b801ac38
commit af537b0a6c
2 changed files with 12 additions and 23 deletions
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2
include/linux/page-flags.h
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@@ -128,7 +128,6 @@ enum pageflags {
/* SLUB */
PG_slub_frozen = PG_active,
PG_slub_debug = PG_error,
};
#ifndef __GENERATING_BOUNDS_H
@@ -215,7 +214,6 @@ PAGEFLAG(SwapBacked, swapbacked) __CLEARPAGEFLAG(SwapBacked, swapbacked)
__PAGEFLAG(SlobFree, slob_free)
__PAGEFLAG(SlubFrozen, slub_frozen)
__PAGEFLAG(SlubDebug, slub_debug)
/*
* Private page markings that may be used by the filesystem that owns the page