Re: [PATCH 10/12] IB/srp: Remove !ch->target tests from the reconnect code

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On 4/30/2015 12:01 PM, Bart Van Assche wrote:
Remove the !ch->target tests from the reconnect code. These
tests are not needed: upon entry of srp_rport_reconnect()
it is guaranteed that all ch->target pointers are non-NULL.
None of the functions srp_new_cm_id(), srp_finish_req(),
srp_create_ch_ib() nor srp_connect_ch() modifies this pointer.
srp_free_ch_ib() is never called concurrently with
srp_rport_reconnect().

Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx>
Cc: Sagi Grimberg <sagig@xxxxxxxxxxxx>
Cc: Sebastian Parschauer <sebastian.riemer@xxxxxxxxxxxxxxxx>
---
  drivers/infiniband/ulp/srp/ib_srp.c | 6 ------
  1 file changed, 6 deletions(-)

diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index a73eb1e5..400ef7a 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1216,14 +1216,10 @@ static int srp_rport_reconnect(struct srp_rport *rport)
  	 */
  	for (i = 0; i < target->ch_count; i++) {
  		ch = &target->ch[i];
-		if (!ch->target)
-			break;
  		ret += srp_new_cm_id(ch);
  	}
  	for (i = 0; i < target->ch_count; i++) {
  		ch = &target->ch[i];
-		if (!ch->target)
-			break;
  		for (j = 0; j < target->req_ring_size; ++j) {
  			struct srp_request *req = &ch->req_ring[j];

@@ -1232,8 +1228,6 @@ static int srp_rport_reconnect(struct srp_rport *rport)
  	}
  	for (i = 0; i < target->ch_count; i++) {
  		ch = &target->ch[i];
-		if (!ch->target)
-			break;
  		/*
  		 * Whether or not creating a new CM ID succeeded, create a new
  		 * QP. This guarantees that all completion callback function


Looks good.

Reviewed-by: Sagi Grimberg <sagig@xxxxxxxxxxxx>
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