diff options
| author | Christoph Lameter <cl@linux.com> | 2011-06-01 12:25:45 -0500 |
|---|---|---|
| committer | Pekka Enberg <penberg@kernel.org> | 2011-07-02 13:26:52 +0300 |
| commit | 50d5c41cd151b21ac1dfc98f048210456ccacc20 (patch) | |
| tree | 406983fe5aca70acad4df7c7f92286e4fc71d70b /include | |
| parent | 7e0528dadc9f8b04e4de0dba48a075100c2afe75 (diff) | |
| download | linux-stable-50d5c41cd151b21ac1dfc98f048210456ccacc20.tar.gz linux-stable-50d5c41cd151b21ac1dfc98f048210456ccacc20.tar.bz2 linux-stable-50d5c41cd151b21ac1dfc98f048210456ccacc20.zip | |
slub: Do not use frozen page flag but a bit in the page counters
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mm_types.h | 5 | ||||
| -rw-r--r-- | include/linux/page-flags.h | 5 |
2 files changed, 3 insertions, 7 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 027935c86c68..e5fb2a70518b 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -41,8 +41,9 @@ struct page { * & limit reverse map searches. */ struct { /* SLUB */ - u16 inuse; - u16 objects; + unsigned inuse:16; + unsigned objects:15; + unsigned frozen:1; }; }; union { diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 6081493db68f..20791f18f5cf 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -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. |