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authorChristoph Lameter <clameter@sgi.com>2007-05-06 14:49:56 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-07 12:12:55 -0700
commit5af60839909b8e3b28ca7cd7912fa0b23475617f (patch)
tree774b068673ad7bb6fc67d29339c9a07bf12a7789 /mm/slub.c
parent96018fdacbfcaf6a0694d066b525f67c24025688 (diff)
downloadlwn-5af60839909b8e3b28ca7cd7912fa0b23475617f.tar.gz
lwn-5af60839909b8e3b28ca7cd7912fa0b23475617f.zip
slab allocators: Remove obsolete SLAB_MUST_HWCACHE_ALIGN
This patch was recently posted to lkml and acked by Pekka. The flag SLAB_MUST_HWCACHE_ALIGN is 1. Never checked by SLAB at all. 2. A duplicate of SLAB_HWCACHE_ALIGN for SLUB 3. Fulfills the role of SLAB_HWCACHE_ALIGN for SLOB. The only remaining use is in sparc64 and ppc64 and their use there reflects some earlier role that the slab flag once may have had. If its specified then SLAB_HWCACHE_ALIGN is also specified. The flag is confusing, inconsistent and has no purpose. Remove it. Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slub.c')
-rw-r--r--mm/slub.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/mm/slub.c b/mm/slub.c
index 3904002bdb35..79940e98e5e6 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1496,7 +1496,7 @@ static unsigned long calculate_alignment(unsigned long flags,
* specified alignment though. If that is greater
* then use it.
*/
- if ((flags & (SLAB_MUST_HWCACHE_ALIGN | SLAB_HWCACHE_ALIGN)) &&
+ if ((flags & SLAB_HWCACHE_ALIGN) &&
size > L1_CACHE_BYTES / 2)
return max_t(unsigned long, align, L1_CACHE_BYTES);
@@ -3142,8 +3142,7 @@ SLAB_ATTR(reclaim_account);
static ssize_t hwcache_align_show(struct kmem_cache *s, char *buf)
{
- return sprintf(buf, "%d\n", !!(s->flags &
- (SLAB_HWCACHE_ALIGN|SLAB_MUST_HWCACHE_ALIGN)));
+ return sprintf(buf, "%d\n", !!(s->flags & SLAB_HWCACHE_ALIGN));
}
SLAB_ATTR_RO(hwcache_align);