From patchwork Tue Mar 5 13:51:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Igor Konopko X-Patchwork-Id: 10839471 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1C49F14DE for ; Tue, 5 Mar 2019 13:54:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0ABAF29A1C for ; Tue, 5 Mar 2019 13:54:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EF2E52919E; Tue, 5 Mar 2019 13:54:04 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7CB032919E for ; Tue, 5 Mar 2019 13:54:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727839AbfCENyE (ORCPT ); Tue, 5 Mar 2019 08:54:04 -0500 Received: from mga12.intel.com ([192.55.52.136]:62720 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727401AbfCENyD (ORCPT ); Tue, 5 Mar 2019 08:54:03 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Mar 2019 05:54:03 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,444,1544515200"; d="scan'208";a="129161519" Received: from gklab-107-059.igk.intel.com ([10.102.107.59]) by fmsmga008.fm.intel.com with ESMTP; 05 Mar 2019 05:54:02 -0800 From: Igor Konopko To: mb@lightnvm.io, javier@javigon.com, hans.holmberg@cnexlabs.com Cc: linux-block@vger.kernel.org, igor.j.konopko@intel.com Subject: [PATCH v2 1/8] lightnvm: pblk: Gracefully handle GC vmalloc fail Date: Tue, 5 Mar 2019 14:51:13 +0100 Message-Id: <20190305135120.29284-2-igor.j.konopko@intel.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20190305135120.29284-1-igor.j.konopko@intel.com> References: <20190305135120.29284-1-igor.j.konopko@intel.com> MIME-Version: 1.0 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently when we fail on gc rq data allocation we simply skip the data which we wanted to move and finally move the line to free state and lose that data due to that. This patch move the data allocation to some earlier phase of GC, where we can still fail gracefully by moving line back to closed state. Signed-off-by: Igor Konopko Reviewed-by: Javier González Reviewed-by: Hans Holmberg --- drivers/lightnvm/pblk-gc.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/lightnvm/pblk-gc.c b/drivers/lightnvm/pblk-gc.c index 65692e6..ea9f392 100644 --- a/drivers/lightnvm/pblk-gc.c +++ b/drivers/lightnvm/pblk-gc.c @@ -84,8 +84,6 @@ static void pblk_gc_line_ws(struct work_struct *work) struct pblk_line_ws *gc_rq_ws = container_of(work, struct pblk_line_ws, ws); struct pblk *pblk = gc_rq_ws->pblk; - struct nvm_tgt_dev *dev = pblk->dev; - struct nvm_geo *geo = &dev->geo; struct pblk_gc *gc = &pblk->gc; struct pblk_line *line = gc_rq_ws->line; struct pblk_gc_rq *gc_rq = gc_rq_ws->priv; @@ -93,13 +91,6 @@ static void pblk_gc_line_ws(struct work_struct *work) up(&gc->gc_sem); - gc_rq->data = vmalloc(array_size(gc_rq->nr_secs, geo->csecs)); - if (!gc_rq->data) { - pblk_err(pblk, "could not GC line:%d (%d/%d)\n", - line->id, *line->vsc, gc_rq->nr_secs); - goto out; - } - /* Read from GC victim block */ ret = pblk_submit_read_gc(pblk, gc_rq); if (ret) { @@ -189,6 +180,8 @@ static void pblk_gc_line_prepare_ws(struct work_struct *work) struct pblk_line *line = line_ws->line; struct pblk_line_mgmt *l_mg = &pblk->l_mg; struct pblk_line_meta *lm = &pblk->lm; + struct nvm_tgt_dev *dev = pblk->dev; + struct nvm_geo *geo = &dev->geo; struct pblk_gc *gc = &pblk->gc; struct pblk_line_ws *gc_rq_ws; struct pblk_gc_rq *gc_rq; @@ -247,9 +240,13 @@ static void pblk_gc_line_prepare_ws(struct work_struct *work) gc_rq->nr_secs = nr_secs; gc_rq->line = line; + gc_rq->data = vmalloc(array_size(gc_rq->nr_secs, geo->csecs)); + if (!gc_rq->data) + goto fail_free_gc_rq; + gc_rq_ws = kmalloc(sizeof(struct pblk_line_ws), GFP_KERNEL); if (!gc_rq_ws) - goto fail_free_gc_rq; + goto fail_free_gc_data; gc_rq_ws->pblk = pblk; gc_rq_ws->line = line; @@ -281,6 +278,8 @@ static void pblk_gc_line_prepare_ws(struct work_struct *work) return; +fail_free_gc_data: + vfree(gc_rq->data); fail_free_gc_rq: kfree(gc_rq); fail_free_lba_list: