staging: lustre: issue in the offset in lnet match hash table

the offset in hash table is overflowed for no wildcard portal.
The offset for no wildcard has been corrected as for wildcard
in the LU-1622

Signed-off-by: Alyona Romanenko <alyona.romanenko@seagate.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7774
Reviewed-on: http://review.whamcloud.com/18422
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lnet/lnet/lib-ptl.c b/drivers/staging/lustre/lnet/lnet/lib-ptl.c
index 2b41205825fc17539423a4b57f89122913db5ca5..3947e8b711c05d94204fce0cbab4f2af24ad27e0 100644 (file)
--- a/drivers/staging/lustre/lnet/lnet/lib-ptl.c
+++ b/drivers/staging/lustre/lnet/lnet/lib-ptl.c
@@ -360,16 +360,15 @@ lnet_mt_match_head(struct lnet_match_table *mtable,
                   lnet_process_id_t id, __u64 mbits)
 {
        struct lnet_portal *ptl = the_lnet.ln_portals[mtable->mt_portal];
+       unsigned long hash = mbits;
 
-       if (lnet_ptl_is_wildcard(ptl)) {
-               return &mtable->mt_mhash[mbits & LNET_MT_HASH_MASK];
-       } else {
-               unsigned long hash = mbits + id.nid + id.pid;
+       if (!lnet_ptl_is_wildcard(ptl)) {
+               hash += id.nid + id.pid;
 
                LASSERT(lnet_ptl_is_unique(ptl));
                hash = hash_long(hash, LNET_MT_HASH_BITS);
-               return &mtable->mt_mhash[hash];
        }
+       return &mtable->mt_mhash[hash & LNET_MT_HASH_MASK];
 }
 
 int