Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752615Ab3C0LM3 (ORCPT ); Wed, 27 Mar 2013 07:12:29 -0400 Received: from smtp.eu.citrix.com ([46.33.159.39]:33206 "EHLO SMTP.EU.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752072Ab3C0LMY (ORCPT ); Wed, 27 Mar 2013 07:12:24 -0400 X-IronPort-AV: E=Sophos;i="4.84,917,1355097600"; d="scan'208";a="2955624" From: Roger Pau Monne To: , CC: Roger Pau Monne , Konrad Rzeszutek Wilk Subject: [PATCH v1 4/7] xen-blkback: move pending handles list from blkbk to pending_req Date: Wed, 27 Mar 2013 12:10:40 +0100 Message-ID: <1364382643-3711-5-git-send-email-roger.pau@citrix.com> X-Mailer: git-send-email 1.7.7.5 (Apple Git-26) In-Reply-To: <1364382643-3711-1-git-send-email-roger.pau@citrix.com> References: <1364382643-3711-1-git-send-email-roger.pau@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2879 Lines: 88 Moving grant ref handles from blkbk to pending_req will allow us to get rid of the shared blkbk structure. Signed-off-by: Roger Pau Monné Cc: Konrad Rzeszutek Wilk Cc: xen-devel@lists.xen.org --- drivers/block/xen-blkback/blkback.c | 16 ++++------------ 1 files changed, 4 insertions(+), 12 deletions(-) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index fd1dd38..e6542d5 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -136,6 +136,7 @@ struct pending_req { struct list_head free_list; struct page *pages[BLKIF_MAX_SEGMENTS_PER_REQUEST]; struct persistent_gnt *persistent_gnts[BLKIF_MAX_SEGMENTS_PER_REQUEST]; + grant_handle_t grant_handles[BLKIF_MAX_SEGMENTS_PER_REQUEST]; }; #define BLKBACK_INVALID_HANDLE (~0) @@ -150,8 +151,6 @@ struct xen_blkbk { /* And its spinlock. */ spinlock_t pending_free_lock; wait_queue_head_t pending_free_wq; - /* And the grant handles that are available. */ - grant_handle_t *pending_grant_handles; }; static struct xen_blkbk *blkbk; @@ -229,7 +228,7 @@ static inline void shrink_free_pagepool(struct xen_blkif *blkif, int num) #define vaddr(page) ((unsigned long)pfn_to_kaddr(page_to_pfn(page))) #define pending_handle(_req, _seg) \ - (blkbk->pending_grant_handles[vaddr_pagenr(_req, _seg)]) + (_req->grant_handles[_seg]) static int do_block_io_op(struct xen_blkif *blkif); @@ -1280,7 +1279,7 @@ static void make_response(struct xen_blkif *blkif, u64 id, static int __init xen_blkif_init(void) { - int i, mmap_pages; + int i; int rc = 0; if (!xen_domain()) @@ -1292,21 +1291,15 @@ static int __init xen_blkif_init(void) return -ENOMEM; } - mmap_pages = xen_blkif_reqs * BLKIF_MAX_SEGMENTS_PER_REQUEST; blkbk->pending_reqs = kzalloc(sizeof(blkbk->pending_reqs[0]) * xen_blkif_reqs, GFP_KERNEL); - blkbk->pending_grant_handles = kmalloc(sizeof(blkbk->pending_grant_handles[0]) * - mmap_pages, GFP_KERNEL); - if (!blkbk->pending_reqs || !blkbk->pending_grant_handles) { + if (!blkbk->pending_reqs) { rc = -ENOMEM; goto out_of_memory; } - for (i = 0; i < mmap_pages; i++) { - blkbk->pending_grant_handles[i] = BLKBACK_INVALID_HANDLE; - } rc = xen_blkif_interface_init(); if (rc) goto failed_init; @@ -1329,7 +1322,6 @@ static int __init xen_blkif_init(void) pr_alert(DRV_PFX "%s: out of memory\n", __func__); failed_init: kfree(blkbk->pending_reqs); - kfree(blkbk->pending_grant_handles); kfree(blkbk); blkbk = NULL; return rc; -- 1.7.7.5 (Apple Git-26) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/