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authorNick Piggin <npiggin@suse.de>2008-07-30 15:23:13 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-30 15:26:54 +1000
commitce0ad7f0952581ba75ab6aee55bb1ed9bb22cf4f (patch)
treebf2a8845a031cb685219db2ddcb3d296b4a9ffab /include/asm-powerpc
parent7d2a175b9bf6e9422bebe95130a3c79a25ff4602 (diff)
downloadlinux-bcache-ce0ad7f0952581ba75ab6aee55bb1ed9bb22cf4f.tar.zst
powerpc/mm: Lockless get_user_pages_fast() for 64-bit (v3)
Implement lockless get_user_pages_fast for 64-bit powerpc. Page table existence is guaranteed with RCU, and speculative page references are used to take a reference to the pages without having a prior existence guarantee on them. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/pgtable-ppc64.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-powerpc/pgtable-ppc64.h b/include/asm-powerpc/pgtable-ppc64.h
index 5fc78c0be302..74c6f380b805 100644
--- a/include/asm-powerpc/pgtable-ppc64.h
+++ b/include/asm-powerpc/pgtable-ppc64.h
@@ -461,6 +461,8 @@ void pgtable_cache_init(void);
return pt;
}
+pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long address);
+
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_PGTABLE_PPC64_H_ */