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authorRalf Baechle <ralf@linux-mips.org>2006-12-12 12:14:57 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-13 12:27:08 -0500
commitec8c0446b6e2b67b5c8813eb517f4bf00efa99a9 (patch)
treee7c12d7c486c958a5e38888b41cfcd6a558f1aff /kernel/fork.c
parentbcd022801ee514e28c32837f0b3ce18c775f1a7b (diff)
[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/fork.c')
-rw-r--r--kernel/fork.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index d16c566eb645..fc723e595cd5 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)
203 struct mempolicy *pol; 203 struct mempolicy *pol;
204 204
205 down_write(&oldmm->mmap_sem); 205 down_write(&oldmm->mmap_sem);
206 flush_cache_mm(oldmm); 206 flush_cache_dup_mm(oldmm);
207 /* 207 /*
208 * Not linked in yet - no deadlock potential: 208 * Not linked in yet - no deadlock potential:
209 */ 209 */