Messages in this thread Patch in this message | | | Date | Fri, 11 Apr 2008 18:17:12 +0200 | From | Nadia.Derbey@bull ... | Subject | [PATCH 10/13] Fix ridr_find() |
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[PATCH 10/13]
This patch only fixes the ridr_find() portion of ridr.c, to make it RCU based.
Signed-off-by: Nadia Derbey <Nadia.Derbey@bull.net>
--- lib/ridr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
Index: linux-2.6.25-rc8-mm1/lib/ridr.c =================================================================== --- linux-2.6.25-rc8-mm1.orig/lib/ridr.c 2008-04-11 18:04:08.000000000 +0200 +++ linux-2.6.25-rc8-mm1/lib/ridr.c 2008-04-11 18:09:00.000000000 +0200 @@ -381,7 +381,7 @@ void *ridr_find(struct ridr *idp, int id struct ridr_layer *p; n = idp->layers * IDR_BITS; - p = idp->top; + p = rcu_dereference(idp->top); /* Mask off upper bits we don't use for the search. */ id &= MAX_ID_MASK; @@ -391,7 +391,7 @@ void *ridr_find(struct ridr *idp, int id while (n > 0 && p) { n -= IDR_BITS; - p = p->ary[(id >> n) & IDR_MASK]; + p = rcu_dereference(p->ary[(id >> n) & IDR_MASK]); } return((void *)p); } --
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