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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>
This commit is contained in:
Alyona Romanenko 2016-03-02 17:01:50 -05:00 committed by Greg Kroah-Hartman
parent 15dd253667
commit 5412d816da
1 changed files with 4 additions and 5 deletions
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9
drivers/staging/lustre/lnet/lnet/lib-ptl.c
View File

@ -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