diff options
| author | Andrew Morton <akpm@osdl.org> | 2004-03-15 15:15:17 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-03-15 15:15:17 -0800 |
| commit | 5bfec9f6eadf728647754ef156aac340de1cc214 (patch) | |
| tree | c5e3ec54060842363715ec580359645312556a56 /include/linux/rmap-locking.h | |
| parent | 952a0ae394f450c878aa2e408c23236896a2efac (diff) | |
[PATCH] Save some memory in mem_map on x86-64
From: Andi Kleen <ak@suse.de>
This patch saves 2MB of memory on a 1GB x86-64 machine, 20MB on a 10GB
machine. It does this by eliminating 8 bytes of useless padding in struct
page.
This resurrects an older patch in a hopefully cleaner form.
Diffstat (limited to 'include/linux/rmap-locking.h')
| -rw-r--r-- | include/linux/rmap-locking.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/rmap-locking.h b/include/linux/rmap-locking.h index d4dd60e34e25..cb30ed470cf6 100644 --- a/include/linux/rmap-locking.h +++ b/include/linux/rmap-locking.h @@ -10,8 +10,8 @@ struct pte_chain; extern kmem_cache_t *pte_chain_cache; -#define pte_chain_lock(page) bit_spin_lock(PG_chainlock, &page->flags) -#define pte_chain_unlock(page) bit_spin_unlock(PG_chainlock, &page->flags) +#define pte_chain_lock(page) bit_spin_lock(PG_chainlock, (unsigned long *)&page->flags) +#define pte_chain_unlock(page) bit_spin_unlock(PG_chainlock, (unsigned long *)&page->flags) struct pte_chain *pte_chain_alloc(int gfp_flags); void __pte_chain_free(struct pte_chain *pte_chain); |