diff options
Diffstat (limited to 'drivers/scsi/libfc/fc_exch.c')
| -rw-r--r-- | drivers/scsi/libfc/fc_exch.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c index d261e982a2fa..9de9db27e874 100644 --- a/drivers/scsi/libfc/fc_exch.c +++ b/drivers/scsi/libfc/fc_exch.c @@ -26,6 +26,7 @@ #include <linux/timer.h> #include <linux/slab.h> #include <linux/err.h> +#include <linux/export.h> #include <scsi/fc/fc_fc2.h> @@ -65,16 +66,15 @@ static struct workqueue_struct *fc_exch_workqueue; * assigned range of exchanges to per cpu pool. */ struct fc_exch_pool { + spinlock_t lock; + struct list_head ex_list; u16 next_index; u16 total_exches; /* two cache of free slot in exch array */ u16 left; u16 right; - - spinlock_t lock; - struct list_head ex_list; -}; +} ____cacheline_aligned_in_smp; /** * struct fc_exch_mgr - The Exchange Manager (EM). @@ -91,13 +91,13 @@ struct fc_exch_pool { * It manages the allocation of exchange IDs. */ struct fc_exch_mgr { + struct fc_exch_pool *pool; + mempool_t *ep_pool; enum fc_class class; struct kref kref; u16 min_xid; u16 max_xid; - mempool_t *ep_pool; u16 pool_max_index; - struct fc_exch_pool *pool; /* * currently exchange mgr stats are updated but not used. @@ -470,6 +470,7 @@ static int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, struct fc_frame_header *fh = fc_frame_header_get(fp); int error; u32 f_ctl; + u8 fh_type = fh->fh_type; ep = fc_seq_exch(sp); WARN_ON((ep->esb_stat & ESB_ST_SEQ_INIT) != ESB_ST_SEQ_INIT); @@ -494,7 +495,7 @@ static int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, */ error = lport->tt.frame_send(lport, fp); - if (fh->fh_type == FC_TYPE_BLS) + if (fh_type == FC_TYPE_BLS) return error; /* @@ -1793,6 +1794,9 @@ restart: goto restart; } } + pool->next_index = 0; + pool->left = FC_XID_UNKNOWN; + pool->right = FC_XID_UNKNOWN; spin_unlock_bh(&pool->lock); } @@ -2281,6 +2285,7 @@ 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); |