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| author | Christoph Lameter | 2007-05-06 23:49:41 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2007-05-07 21:12:54 +0200 |
| commit | b49af68ff9fc5d6e0d96704a1843968b91cc73c6 (patch) | |
| tree | eb5e6d9425a9069cdfc45b09a1d0f61f1419d2c2 /mm/slub.c | |
| parent | mm: optimize compound_head() by avoiding a shared page flag (diff) | |
| download | kernel-qcow2-linux-b49af68ff9fc5d6e0d96704a1843968b91cc73c6.tar.gz kernel-qcow2-linux-b49af68ff9fc5d6e0d96704a1843968b91cc73c6.tar.xz kernel-qcow2-linux-b49af68ff9fc5d6e0d96704a1843968b91cc73c6.zip | |
Add virt_to_head_page and consolidate code in slab and slub
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.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/mm/slub.c b/mm/slub.c index 8fa1c6e937f5..347c11e80d8e 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1323,9 +1323,7 @@ void kmem_cache_free(struct kmem_cache *s, void *x) { struct page * page; - page = virt_to_page(x); - - page = compound_head(page); + page = virt_to_head_page(x); if (unlikely(PageError(page) && (s->flags & SLAB_STORE_USER))) set_tracking(s, x, TRACK_FREE); @@ -1336,7 +1334,7 @@ EXPORT_SYMBOL(kmem_cache_free); /* Figure out on which slab object the object resides */ static struct page *get_object_page(const void *x) { - struct page *page = compound_head(virt_to_page(x)); + struct page *page = virt_to_head_page(x); if (!PageSlab(page)) return NULL; @@ -2076,7 +2074,7 @@ void kfree(const void *x) if (!x) return; - page = compound_head(virt_to_page(x)); + page = virt_to_head_page(x); s = page->slab; @@ -2112,7 +2110,7 @@ void *krealloc(const void *p, size_t new_size, gfp_t flags) return NULL; } - page = compound_head(virt_to_page(p)); + page = virt_to_head_page(p); new_cache = get_slab(new_size, flags); |