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[SCSI] libfc: avoid exchanges collision during lport reset

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Currently timer delay is large and is using msleep to avoid
avoid exchanges collision across lport reset, so instead
do this by initializing exches pool indexes during
reset also.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Tested-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Vasu Dev
2011-10-28 11:34:17 -07:00
committed by James Bottomley
parent 14fc315fa3
commit b6e3c84034
2 changed files with 5 additions and 9 deletions
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4
drivers/scsi/libfc/fc_exch.c
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@@ -1793,6 +1793,9 @@ restart:
goto restart;
}
}
pool->next_index = 0;
pool->left = FC_XID_UNKNOWN;
pool->right = FC_XID_UNKNOWN;
spin_unlock_bh(&pool->lock);
}
@@ -2281,6 +2284,7 @@ struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *lport,
goto free_mempool;
for_each_possible_cpu(cpu) {
pool = per_cpu_ptr(mp->pool, cpu);
pool->next_index = 0;
pool->left = FC_XID_UNKNOWN;
pool->right = FC_XID_UNKNOWN;
spin_lock_init(&pool->lock);