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author | Chuck Lever <chuck.lever@oracle.com> | 2017-04-09 13:07:13 -0400 |
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committer | J. Bruce Fields <bfields@redhat.com> | 2017-04-25 17:25:55 -0400 |
commit | 2cf32924c68a22783e6f630e1b5345a80aa1a376 (patch) | |
tree | b77c4864acc38df09dfd5c8ce5aaa55741981b62 /net/sunrpc/xprtrdma/svc_rdma_transport.c | |
parent | 68cc4636bbbca89b9fedcf46d8b6bee444fc5e4e (diff) | |
download | linux-2cf32924c68a22783e6f630e1b5345a80aa1a376.tar.gz linux-2cf32924c68a22783e6f630e1b5345a80aa1a376.tar.bz2 linux-2cf32924c68a22783e6f630e1b5345a80aa1a376.zip |
svcrdma: Remove the req_map cache
req_maps are no longer used by the send path and can thus be removed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/svc_rdma_transport.c')
-rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_transport.c | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c index 1597ca8ba3c0..a9d9cb1ba4c6 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c @@ -272,85 +272,6 @@ static void svc_rdma_destroy_ctxts(struct svcxprt_rdma *xprt) } } -static struct svc_rdma_req_map *alloc_req_map(gfp_t flags) -{ - struct svc_rdma_req_map *map; - - map = kmalloc(sizeof(*map), flags); - if (map) - INIT_LIST_HEAD(&map->free); - return map; -} - -static bool svc_rdma_prealloc_maps(struct svcxprt_rdma *xprt) -{ - unsigned int i; - - /* One for each receive buffer on this connection. */ - i = xprt->sc_max_requests; - - while (i--) { - struct svc_rdma_req_map *map; - - map = alloc_req_map(GFP_KERNEL); - if (!map) { - dprintk("svcrdma: No memory for request map\n"); - return false; - } - list_add(&map->free, &xprt->sc_maps); - } - return true; -} - -struct svc_rdma_req_map *svc_rdma_get_req_map(struct svcxprt_rdma *xprt) -{ - struct svc_rdma_req_map *map = NULL; - - spin_lock(&xprt->sc_map_lock); - if (list_empty(&xprt->sc_maps)) - goto out_empty; - - map = list_first_entry(&xprt->sc_maps, - struct svc_rdma_req_map, free); - list_del_init(&map->free); - spin_unlock(&xprt->sc_map_lock); - -out: - map->count = 0; - return map; - -out_empty: - spin_unlock(&xprt->sc_map_lock); - - /* Pre-allocation amount was incorrect */ - map = alloc_req_map(GFP_NOIO); - if (map) - goto out; - - WARN_ONCE(1, "svcrdma: empty request map list?\n"); - return NULL; -} - -void svc_rdma_put_req_map(struct svcxprt_rdma *xprt, - struct svc_rdma_req_map *map) -{ - spin_lock(&xprt->sc_map_lock); - list_add(&map->free, &xprt->sc_maps); - spin_unlock(&xprt->sc_map_lock); -} - -static void svc_rdma_destroy_maps(struct svcxprt_rdma *xprt) -{ - while (!list_empty(&xprt->sc_maps)) { - struct svc_rdma_req_map *map; - - map = list_first_entry(&xprt->sc_maps, - struct svc_rdma_req_map, free); - list_del(&map->free); - kfree(map); - } -} - /* QP event handler */ static void qp_event_handler(struct ib_event *event, void *context) { @@ -544,7 +465,6 @@ static struct svcxprt_rdma *rdma_create_xprt(struct svc_serv *serv, INIT_LIST_HEAD(&cma_xprt->sc_frmr_q); INIT_LIST_HEAD(&cma_xprt->sc_ctxts); INIT_LIST_HEAD(&cma_xprt->sc_rw_ctxts); - INIT_LIST_HEAD(&cma_xprt->sc_maps); init_waitqueue_head(&cma_xprt->sc_send_wait); spin_lock_init(&cma_xprt->sc_lock); @@ -552,7 +472,6 @@ static struct svcxprt_rdma *rdma_create_xprt(struct svc_serv *serv, spin_lock_init(&cma_xprt->sc_frmr_q_lock); spin_lock_init(&cma_xprt->sc_ctxt_lock); spin_lock_init(&cma_xprt->sc_rw_ctxt_lock); - spin_lock_init(&cma_xprt->sc_map_lock); /* * Note that this implies that the underlying transport support @@ -1004,8 +923,6 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) if (!svc_rdma_prealloc_ctxts(newxprt)) goto errout; - if (!svc_rdma_prealloc_maps(newxprt)) - goto errout; /* * Limit ORD based on client limit, local device limit, and @@ -1237,7 +1154,6 @@ static void __svc_rdma_free(struct work_struct *work) rdma_dealloc_frmr_q(rdma); svc_rdma_destroy_rw_ctxts(rdma); svc_rdma_destroy_ctxts(rdma); - svc_rdma_destroy_maps(rdma); /* Destroy the QP if present (not a listener) */ if (rdma->sc_qp && !IS_ERR(rdma->sc_qp)) |