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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-06-07 17:09:45 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-06-23 06:50:45 -0700 |
| commit | 94bfa3b6692c7a3f6f119596724204ec975d3ef0 (patch) | |
| tree | 4c59cc890ed6fa0f1922416e6cbb7c87ecc8c3dc | |
| parent | f3b577dec1f2ce32d2db6d2ca6badff7002512af (diff) | |
| download | linux-stable-94bfa3b6692c7a3f6f119596724204ec975d3ef0.tar.gz linux-stable-94bfa3b6692c7a3f6f119596724204ec975d3ef0.tar.bz2 linux-stable-94bfa3b6692c7a3f6f119596724204ec975d3ef0.zip | |
idr: fix RCU lockdep splat in idr_get_next()
Convert to rcu_dereference_raw() given that many callers may have many
different locking models.
Located-by: Miles Lane <miles.lane@gmail.com>
Tested-by: Miles Lane <miles.lane@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
| -rw-r--r-- | lib/idr.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/idr.c b/lib/idr.c index c1a206901761..7f1a4f0acf50 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -602,7 +602,7 @@ void *idr_get_next(struct idr *idp, int *nextidp) /* find first ent */ n = idp->layers * IDR_BITS; max = 1 << n; - p = rcu_dereference(idp->top); + p = rcu_dereference_raw(idp->top); if (!p) return NULL; @@ -610,7 +610,7 @@ void *idr_get_next(struct idr *idp, int *nextidp) while (n > 0 && p) { n -= IDR_BITS; *paa++ = p; - p = rcu_dereference(p->ary[(id >> n) & IDR_MASK]); + p = rcu_dereference_raw(p->ary[(id >> n) & IDR_MASK]); } if (p) { |