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From: Chuck Lever <chuck.lever@oracle.com>
To: linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org
Subject: [PATCH v1 06/18] xprtrdma: Rename rpcrdma_buffer::rb_all
Date: Tue, 06 Aug 2019 11:54:18 -0400
Message-ID: <20190806155418.9529.82559.stgit@manet.1015granger.net> (raw)
In-Reply-To: <20190806155246.9529.14571.stgit@manet.1015granger.net>

Clean up: There are other "all" list heads. For code clarity
distinguish this one as for use only for MRs by renaming it.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 net/sunrpc/xprtrdma/verbs.c     |   26 ++++++++------------------
 net/sunrpc/xprtrdma/xprt_rdma.h |    2 +-
 2 files changed, 9 insertions(+), 19 deletions(-)

diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 902cc82..bf7a7cf 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -942,8 +942,6 @@ struct rpcrdma_sendctx *rpcrdma_sendctx_get_locked(struct rpcrdma_xprt *r_xprt)
 	struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
 	struct rpcrdma_ia *ia = &r_xprt->rx_ia;
 	unsigned int count;
-	LIST_HEAD(free);
-	LIST_HEAD(all);
 
 	for (count = 0; count < ia->ri_max_segs; count++) {
 		struct rpcrdma_mr *mr;
@@ -961,15 +959,13 @@ struct rpcrdma_sendctx *rpcrdma_sendctx_get_locked(struct rpcrdma_xprt *r_xprt)
 
 		mr->mr_xprt = r_xprt;
 
-		list_add(&mr->mr_list, &free);
-		list_add(&mr->mr_all, &all);
+		spin_lock(&buf->rb_mrlock);
+		list_add(&mr->mr_list, &buf->rb_mrs);
+		list_add(&mr->mr_all, &buf->rb_all_mrs);
+		spin_unlock(&buf->rb_mrlock);
 	}
 
-	spin_lock(&buf->rb_mrlock);
-	list_splice(&free, &buf->rb_mrs);
-	list_splice(&all, &buf->rb_all);
 	r_xprt->rx_stats.mrs_allocated += count;
-	spin_unlock(&buf->rb_mrlock);
 	trace_xprtrdma_createmrs(r_xprt, count);
 }
 
@@ -1081,7 +1077,7 @@ int rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt)
 	spin_lock_init(&buf->rb_mrlock);
 	spin_lock_init(&buf->rb_lock);
 	INIT_LIST_HEAD(&buf->rb_mrs);
-	INIT_LIST_HEAD(&buf->rb_all);
+	INIT_LIST_HEAD(&buf->rb_all_mrs);
 	INIT_DELAYED_WORK(&buf->rb_refresh_worker,
 			  rpcrdma_mr_refresh_worker);
 
@@ -1148,24 +1144,18 @@ static void rpcrdma_rep_destroy(struct rpcrdma_rep *rep)
 
 	count = 0;
 	spin_lock(&buf->rb_mrlock);
-	while (!list_empty(&buf->rb_all)) {
-		mr = list_entry(buf->rb_all.next, struct rpcrdma_mr, mr_all);
+	while ((mr = list_first_entry_or_null(&buf->rb_all_mrs,
+					      struct rpcrdma_mr,
+					      mr_all)) != NULL) {
 		list_del(&mr->mr_all);
-
 		spin_unlock(&buf->rb_mrlock);
 
-		/* Ensure MW is not on any rl_registered list */
-		if (!list_empty(&mr->mr_list))
-			list_del(&mr->mr_list);
-
 		frwr_release_mr(mr);
 		count++;
 		spin_lock(&buf->rb_mrlock);
 	}
 	spin_unlock(&buf->rb_mrlock);
 	r_xprt->rx_stats.mrs_allocated = 0;
-
-	dprintk("RPC:       %s: released %u MRs\n", __func__, count);
 }
 
 /**
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index f9071fb..f90643d 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -365,7 +365,7 @@ struct rpcrdma_req {
 struct rpcrdma_buffer {
 	spinlock_t		rb_mrlock;	/* protect rb_mrs list */
 	struct list_head	rb_mrs;
-	struct list_head	rb_all;
+	struct list_head	rb_all_mrs;
 
 	unsigned long		rb_sc_head;
 	unsigned long		rb_sc_tail;


  parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-06 15:53 [PATCH v1 00/18] NFS/RDMA patches Chuck Lever
2019-08-06 15:53 ` [PATCH v1 01/18] xprtrdma: Refresh the documenting comment in frwr_ops.c Chuck Lever
2019-08-06 15:53 ` [PATCH v1 02/18] xprtrdma: Fix calculation of ri_max_segs again Chuck Lever
2019-08-06 15:54 ` [PATCH v1 03/18] xprtrdma: Boost maximum transport header size Chuck Lever
2019-08-06 15:54 ` [PATCH v1 04/18] xprtrdma: Boost client's max slot table size to match Linux server Chuck Lever
2019-08-06 15:54 ` [PATCH v1 05/18] xprtrdma: Rename CQE field in Receive trace points Chuck Lever
2019-08-06 15:54 ` Chuck Lever [this message]
2019-08-06 15:54 ` [PATCH v1 07/18] xprtrdma: Toggle XPRT_CONGESTED in xprtrdma's slot methods Chuck Lever
2019-08-06 15:54 ` [PATCH v1 08/18] xprtrdma: Simplify rpcrdma_mr_pop Chuck Lever
2019-08-06 15:54 ` [PATCH v1 09/18] xprtrdma: Combine rpcrdma_mr_put and rpcrdma_mr_unmap_and_put Chuck Lever
2019-08-06 15:54 ` [PATCH v1 10/18] xprtrdma: Move rpcrdma_mr_get out of frwr_map Chuck Lever
2019-08-06 15:54 ` [PATCH v1 11/18] xprtrdma: Ensure creating an MR does not trigger FS writeback Chuck Lever
2019-08-06 15:54 ` [PATCH v1 12/18] xprtrdma: Cache free MRs in each rpcrdma_req Chuck Lever
2019-08-06 15:54 ` [PATCH v1 13/18] xprtrdma: Remove rpcrdma_buffer::rb_mrlock Chuck Lever
2019-08-06 15:55 ` [PATCH v1 14/18] xprtrdma: Use an llist to manage free rpcrdma_reps Chuck Lever
2019-08-06 15:55 ` [PATCH v1 15/18] xprtrdma: Clean up xprt_rdma_set_connect_timeout() Chuck Lever
2019-08-06 15:55 ` [PATCH v1 16/18] xprtdma: Fix bc_max_slots return value Chuck Lever
2019-08-06 15:55 ` [PATCH v1 17/18] xprtrdma: Inline XDR chunk encoder functions Chuck Lever
2019-08-06 15:55 ` [PATCH v1 18/18] xprtrdma: Optimize rpcrdma_post_recvs() Chuck Lever

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