Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751677Ab3FZDPf (ORCPT ); Tue, 25 Jun 2013 23:15:35 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:39008 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751314Ab3FZDPe (ORCPT ); Tue, 25 Jun 2013 23:15:34 -0400 Date: Wed, 26 Jun 2013 11:15:27 +0800 From: majianpeng To: sage Cc: ceph-devel , linux-kernel Reply-To: majianpeng Subject: [PATCH] ceph: Reconstruct the func ceph_reserve_caps. X-Priority: 3 X-GUID: F902CAEB-0E08-4FD8-B02E-87353B707EB6 X-Has-Attach: no X-Mailer: Foxmail 7.0.1.90[en] Mime-Version: 1.0 Message-ID: <201306261115191951258@gmail.com> Content-Type: text/plain; charset="gb2312" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id r5Q3FfFT003095 Content-Length: 2734 Lines: 78 Signed-off-by: Jianpeng Ma --- fs/ceph/caps.c | 21 +++++++-------------- fs/ceph/super.h | 2 +- 2 files changed, 8 insertions(+), 15 deletions(-) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index da0f9b8..6d2655c 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -147,7 +147,7 @@ void ceph_adjust_min_caps(struct ceph_mds_client *mdsc, int delta) spin_unlock(&mdsc->caps_list_lock); } -int ceph_reserve_caps(struct ceph_mds_client *mdsc, +void ceph_reserve_caps(struct ceph_mds_client *mdsc, struct ceph_cap_reservation *ctx, int need) { int i; @@ -155,7 +155,6 @@ int ceph_reserve_caps(struct ceph_mds_client *mdsc, int have; int alloc = 0; LIST_HEAD(newcaps); - int ret = 0; dout("reserve caps ctx=%p need=%d\n", ctx, need); @@ -174,14 +173,15 @@ int ceph_reserve_caps(struct ceph_mds_client *mdsc, for (i = have; i < need; i++) { cap = kmem_cache_alloc(ceph_cap_cachep, GFP_NOFS); - if (!cap) { - ret = -ENOMEM; - goto out_alloc_count; - } + if (!cap) + break; list_add(&cap->caps_item, &newcaps); alloc++; } - BUG_ON(have + alloc != need); + /* we didn't manage to reserve as much as we needed */ + if (have + alloc != need) + pr_warn("reserve caps ctx=%p ENOMEM need=%d got=%d\n", + ctx, need, have + alloc); spin_lock(&mdsc->caps_list_lock); mdsc->caps_total_count += alloc; @@ -197,13 +197,6 @@ int ceph_reserve_caps(struct ceph_mds_client *mdsc, dout("reserve caps ctx=%p %d = %d used + %d resv + %d avail\n", ctx, mdsc->caps_total_count, mdsc->caps_use_count, mdsc->caps_reserve_count, mdsc->caps_avail_count); - return 0; - -out_alloc_count: - /* we didn't manage to reserve as much as we needed */ - pr_warning("reserve caps ctx=%p ENOMEM need=%d got=%d\n", - ctx, need, have); - return ret; } int ceph_unreserve_caps(struct ceph_mds_client *mdsc, diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 7ccfdb4..dfbb729 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -534,7 +534,7 @@ extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci); extern void ceph_caps_init(struct ceph_mds_client *mdsc); extern void ceph_caps_finalize(struct ceph_mds_client *mdsc); extern void ceph_adjust_min_caps(struct ceph_mds_client *mdsc, int delta); -extern int ceph_reserve_caps(struct ceph_mds_client *mdsc, +extern void ceph_reserve_caps(struct ceph_mds_client *mdsc, struct ceph_cap_reservation *ctx, int need); extern int ceph_unreserve_caps(struct ceph_mds_client *mdsc, struct ceph_cap_reservation *ctx); -- 1.8.1.2 ????{.n?+???????+%?????ݶ??w??{.n?+????{??G?????{ay?ʇڙ?,j??f???h?????????z_??(?階?ݢj"???m??????G????????????&???~???iO???z??v?^?m???? ????????I?