From adfaa888a292e7f38fb43668d8994f246e371f0f Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Fri, 14 Jul 2006 00:23:55 -0700 Subject: [PATCH] [PATCH] fmr pool: remove unnecessary pointer dereference ib_fmr_pool_map_phys gets the virtual address by pointer but never writes there, and users (e.g. srp) seem to assume this and ignore the value returned. This patch cleans up the API to get the VA by value, and updates all users. Signed-off-by: Michael S. Tsirkin Acked-by: Roland Dreier Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/infiniband/core/fmr_pool.c | 8 ++++---- drivers/infiniband/ulp/iser/iser_verbs.c | 2 +- drivers/infiniband/ulp/srp/ib_srp.c | 2 +- include/rdma/ib_fmr_pool.h | 2 +- 4 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/infiniband/core/fmr_pool.c b/drivers/infiniband/core/fmr_pool.c index 615fe9c..86a3b2d 100644 --- a/drivers/infiniband/core/fmr_pool.c +++ b/drivers/infiniband/core/fmr_pool.c @@ -426,7 +426,7 @@ EXPORT_SYMBOL(ib_flush_fmr_pool); struct ib_pool_fmr *ib_fmr_pool_map_phys(struct ib_fmr_pool *pool_handle, u64 *page_list, int list_len, - u64 *io_virtual_address) + u64 io_virtual_address) { struct ib_fmr_pool *pool = pool_handle; struct ib_pool_fmr *fmr; @@ -440,7 +440,7 @@ struct ib_pool_fmr *ib_fmr_pool_map_phys(struct ib_fmr_pool *pool_handle, fmr = ib_fmr_cache_lookup(pool, page_list, list_len, - *io_virtual_address); + io_virtual_address); if (fmr) { /* found in cache */ ++fmr->ref_count; @@ -464,7 +464,7 @@ struct ib_pool_fmr *ib_fmr_pool_map_phys(struct ib_fmr_pool *pool_handle, spin_unlock_irqrestore(&pool->pool_lock, flags); result = ib_map_phys_fmr(fmr->fmr, page_list, list_len, - *io_virtual_address); + io_virtual_address); if (result) { spin_lock_irqsave(&pool->pool_lock, flags); @@ -481,7 +481,7 @@ struct ib_pool_fmr *ib_fmr_pool_map_phys(struct ib_fmr_pool *pool_handle, fmr->ref_count = 1; if (pool->cache_bucket) { - fmr->io_virtual_address = *io_virtual_address; + fmr->io_virtual_address = io_virtual_address; fmr->page_list_len = list_len; memcpy(fmr->page_list, page_list, list_len * sizeof(*page_list)); diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c index ff117bb..72febf1 100644 --- a/drivers/infiniband/ulp/iser/iser_verbs.c +++ b/drivers/infiniband/ulp/iser/iser_verbs.c @@ -594,7 +594,7 @@ int iser_reg_page_vec(struct iser_conn *ib_conn, mem = ib_fmr_pool_map_phys(ib_conn->fmr_pool, page_list, page_vec->length, - &io_addr); + io_addr); if (IS_ERR(mem)) { status = (int)PTR_ERR(mem); diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 6191180..8f472e7 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -615,7 +615,7 @@ static int srp_map_fmr(struct srp_device *dev, struct scatterlist *scat, (sg_dma_address(&scat[i]) & dev->fmr_page_mask) + j; req->fmr = ib_fmr_pool_map_phys(dev->fmr_pool, - dma_pages, page_cnt, &io_addr); + dma_pages, page_cnt, io_addr); if (IS_ERR(req->fmr)) { ret = PTR_ERR(req->fmr); req->fmr = NULL; diff --git a/include/rdma/ib_fmr_pool.h b/include/rdma/ib_fmr_pool.h index 4ace54c..00dadbf 100644 --- a/include/rdma/ib_fmr_pool.h +++ b/include/rdma/ib_fmr_pool.h @@ -88,7 +88,7 @@ int ib_flush_fmr_pool(struct ib_fmr_pool *pool); struct ib_pool_fmr *ib_fmr_pool_map_phys(struct ib_fmr_pool *pool_handle, u64 *page_list, int list_len, - u64 *io_virtual_address); + u64 io_virtual_address); int ib_fmr_pool_unmap(struct ib_pool_fmr *fmr); -- 1.8.2.3