From: Roland Dreier <roland@topspin.com>
Mask bits correctly from jhash result in ib_fmr_hash() so that the
computed bucket index is within our hash table. This fixes an SDP
crash.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/drivers/infiniband/core/fmr_pool.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff -puN drivers/infiniband/core/fmr_pool.c~ib-fix-fmr-pool-crash drivers/infiniband/core/fmr_pool.c
--- 25/drivers/infiniband/core/fmr_pool.c~ib-fix-fmr-pool-crash Fri Apr 1 13:53:37 2005
+++ 25-akpm/drivers/infiniband/core/fmr_pool.c Fri Apr 1 13:53:37 2005
@@ -103,9 +103,8 @@ struct ib_fmr_pool {
static inline u32 ib_fmr_hash(u64 first_page)
{
- return jhash_2words((u32) first_page,
- (u32) (first_page >> 32),
- 0);
+ return jhash_2words((u32) first_page, (u32) (first_page >> 32), 0) &
+ (IB_FMR_HASH_SIZE - 1);
}
/* Caller must hold pool_lock */
_