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authorRalf Baechle <ralf@linux-mips.org>2006-12-12 17:14:57 +0000
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-13 09:27:08 -0800
commitec8c0446b6e2b67b5c8813eb517f4bf00efa99a9 (patch)
treee7c12d7c486c958a5e38888b41cfcd6a558f1aff /kernel
parentbcd022801ee514e28c32837f0b3ce18c775f1a7b (diff)
downloadop-kernel-dev-ec8c0446b6e2b67b5c8813eb517f4bf00efa99a9.zip
op-kernel-dev-ec8c0446b6e2b67b5c8813eb517f4bf00efa99a9.tar.gz
[PATCH] Optimize D-cache alias handling on fork
Virtually index, physically tagged cache architectures can get away without cache flushing when forking. This patch adds a new cache flushing function flush_cache_dup_mm(struct mm_struct *) which for the moment I've implemented to do the same thing on all architectures except on MIPS where it's a no-op. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/fork.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index d16c566..fc723e5 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -203,7 +203,7 @@ static inline int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
struct mempolicy *pol;
down_write(&oldmm->mmap_sem);
- flush_cache_mm(oldmm);
+ flush_cache_dup_mm(oldmm);
/*
* Not linked in yet - no deadlock potential:
*/
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