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slub: Do not use frozen page flag but a bit in the page counters

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Do not use a page flag for the frozen bit. It needs to be part
of the state that is handled with cmpxchg_double(). So use a bit
in the counter struct in the page struct for that purpose.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Christoph Lameter 2011-06-01 12:25:45 -05:00 • committed by Pekka Enberg
parent 7e0528dadc
commit 50d5c41cd1
3 changed files with 9 additions and 13 deletions
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5
include/linux/page-flags.h
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@ -124,9 +124,6 @@ enum pageflags {
/* SLOB */
PG_slob_free = PG_private,
/* SLUB */
PG_slub_frozen = PG_active,
};
#ifndef __GENERATING_BOUNDS_H
@ -212,8 +209,6 @@ PAGEFLAG(SwapBacked, swapbacked) __CLEARPAGEFLAG(SwapBacked, swapbacked)
__PAGEFLAG(SlobFree, slob_free)
__PAGEFLAG(SlubFrozen, slub_frozen)
/*
* Private page markings that may be used by the filesystem that owns the page
* for its own purposes.