From patchwork Tue Aug 23 13:06:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Xiaoxu X-Patchwork-Id: 12952242 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2E6CC32774 for ; Tue, 23 Aug 2022 16:27:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244354AbiHWQ1x (ORCPT ); Tue, 23 Aug 2022 12:27:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244479AbiHWQ1a (ORCPT ); Tue, 23 Aug 2022 12:27:30 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9CBEE4D4F3 for ; Tue, 23 Aug 2022 05:53:50 -0700 (PDT) Received: from dggpeml500023.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4MBnvM20DTzkWK5; Tue, 23 Aug 2022 20:03:59 +0800 (CST) Received: from fedora.huawei.com (10.175.101.6) by dggpeml500023.china.huawei.com (7.185.36.114) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Tue, 23 Aug 2022 20:07:27 +0800 From: Zhang Xiaoxu To: , , , , , , , Subject: [PATCH -next 1/2] cifs: Add release function to cifs_writedata Date: Tue, 23 Aug 2022 21:06:36 +0800 Message-ID: <20220823130637.1164764-2-zhangxiaoxu5@huawei.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220823130637.1164764-1-zhangxiaoxu5@huawei.com> References: <20220823130637.1164764-1-zhangxiaoxu5@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.101.6] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpeml500023.china.huawei.com (7.185.36.114) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org The release function is determined when init the cifs_writedata, so add it to the struct cifs_writedata. Signed-off-by: Zhang Xiaoxu --- fs/cifs/cifsglob.h | 1 + fs/cifs/cifsproto.h | 6 +++-- fs/cifs/file.c | 57 ++++++++++++++++++++++++--------------------- 3 files changed, 35 insertions(+), 29 deletions(-) diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index f15d7b0c123d..19223df189d0 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -1459,6 +1459,7 @@ struct cifs_readdata { /* asynchronous write support */ struct cifs_writedata { struct kref refcount; + void (*release)(struct kref *arg); struct list_head list; struct completion done; enum writeback_sync_modes sync_mode; diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 3bc94bcc7177..10890c0c0910 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -577,9 +577,11 @@ int cifs_async_writev(struct cifs_writedata *wdata, void (*release)(struct kref *kref)); void cifs_writev_complete(struct work_struct *work); struct cifs_writedata *cifs_writedata_alloc(unsigned int nr_pages, - work_func_t complete); + work_func_t complete, + void (*release)(struct kref *)); struct cifs_writedata *cifs_writedata_direct_alloc(struct page **pages, - work_func_t complete); + work_func_t complete, + void (*release)(struct kref *)); void cifs_writedata_release(struct kref *refcount); int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, diff --git a/fs/cifs/file.c b/fs/cifs/file.c index fa738adc031f..56d1b28fb476 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2327,7 +2327,9 @@ cifs_writev_requeue(struct cifs_writedata *wdata) tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE; } - wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete); + wdata2 = cifs_writedata_alloc(nr_pages, + cifs_writev_complete, + cifs_writedata_release); if (!wdata2) { rc = -ENOMEM; break; @@ -2355,8 +2357,7 @@ cifs_writev_requeue(struct cifs_writedata *wdata) rc = -EBADF; } else { wdata2->pid = wdata2->cfile->pid; - rc = server->ops->async_writev(wdata2, - cifs_writedata_release); + rc = server->ops->async_writev(wdata2, wdata2->release); } for (j = 0; j < nr_pages; j++) { @@ -2368,7 +2369,7 @@ cifs_writev_requeue(struct cifs_writedata *wdata) } } - kref_put(&wdata2->refcount, cifs_writedata_release); + kref_put(&wdata2->refcount, wdata2->release); if (rc) { if (is_retryable_error(rc)) continue; @@ -2389,7 +2390,7 @@ cifs_writev_requeue(struct cifs_writedata *wdata) if (rc != 0 && !is_retryable_error(rc)) mapping_set_error(inode->i_mapping, rc); - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, wdata->release); } void @@ -2422,28 +2423,31 @@ cifs_writev_complete(struct work_struct *work) } if (wdata->result != -EAGAIN) mapping_set_error(inode->i_mapping, wdata->result); - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, wdata->release); } struct cifs_writedata * -cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) +cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete, + void (*release)(struct kref *)) { struct page **pages = kcalloc(nr_pages, sizeof(struct page *), GFP_NOFS); if (pages) - return cifs_writedata_direct_alloc(pages, complete); + return cifs_writedata_direct_alloc(pages, complete, release); return NULL; } struct cifs_writedata * -cifs_writedata_direct_alloc(struct page **pages, work_func_t complete) +cifs_writedata_direct_alloc(struct page **pages, work_func_t complete, + void (*release)(struct kref *)) { struct cifs_writedata *wdata; wdata = kzalloc(sizeof(*wdata), GFP_NOFS); if (wdata != NULL) { wdata->pages = pages; + wdata->release = release; kref_init(&wdata->refcount); INIT_LIST_HEAD(&wdata->list); init_completion(&wdata->done); @@ -2519,7 +2523,8 @@ wdata_alloc_and_fillpages(pgoff_t tofind, struct address_space *mapping, struct cifs_writedata *wdata; wdata = cifs_writedata_alloc((unsigned int)tofind, - cifs_writev_complete); + cifs_writev_complete, + cifs_writedata_release); if (!wdata) return NULL; @@ -2630,8 +2635,7 @@ wdata_send_pages(struct cifs_writedata *wdata, unsigned int nr_pages, if (wdata->cfile->invalidHandle) rc = -EAGAIN; else - rc = wdata->server->ops->async_writev(wdata, - cifs_writedata_release); + rc = wdata->server->ops->async_writev(wdata, wdata->release); return rc; } @@ -2706,7 +2710,7 @@ static int cifs_writepages(struct address_space *mapping, } if (found_pages == 0) { - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, wdata->release); add_credits_and_wake_if(server, credits, 0); break; } @@ -2716,7 +2720,7 @@ static int cifs_writepages(struct address_space *mapping, /* nothing to write? */ if (nr_pages == 0) { - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, wdata->release); add_credits_and_wake_if(server, credits, 0); continue; } @@ -2754,7 +2758,7 @@ static int cifs_writepages(struct address_space *mapping, if (!is_retryable_error(rc)) mapping_set_error(mapping, rc); } - kref_put(&wdata->refcount, cifs_writedata_release); + kref_put(&wdata->refcount, wdata->release); if (wbc->sync_mode == WB_SYNC_ALL && rc == -EAGAIN) { index = saved_index; @@ -3107,7 +3111,7 @@ cifs_uncached_writev_complete(struct work_struct *work) complete(&wdata->done); collect_uncached_write_data(wdata->ctx); /* the below call can possibly free the last ref to aio ctx */ - kref_put(&wdata->refcount, cifs_uncached_writedata_release); + kref_put(&wdata->refcount, wdata->release); } static int @@ -3203,7 +3207,7 @@ cifs_resend_wdata(struct cifs_writedata *wdata, struct list_head *wdata_list, } #endif rc = server->ops->async_writev(wdata, - cifs_uncached_writedata_release); + wdata->release); } } @@ -3218,7 +3222,7 @@ cifs_resend_wdata(struct cifs_writedata *wdata, struct list_head *wdata_list, } while (rc == -EAGAIN); fail: - kref_put(&wdata->refcount, cifs_uncached_writedata_release); + kref_put(&wdata->refcount, wdata->release); return rc; } @@ -3290,7 +3294,8 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from, (cur_len + start + PAGE_SIZE - 1) / PAGE_SIZE; wdata = cifs_writedata_direct_alloc(pagevec, - cifs_uncached_writev_complete); + cifs_uncached_writev_complete, + cifs_uncached_writedata_release); if (!wdata) { rc = -ENOMEM; add_credits_and_wake_if(server, credits, 0); @@ -3307,7 +3312,8 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from, } else { nr_pages = get_numpages(wsize, len, &cur_len); wdata = cifs_writedata_alloc(nr_pages, - cifs_uncached_writev_complete); + cifs_uncached_writev_complete, + cifs_uncached_writedata_release); if (!wdata) { rc = -ENOMEM; add_credits_and_wake_if(server, credits, 0); @@ -3362,14 +3368,12 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from, if (wdata->cfile->invalidHandle) rc = -EAGAIN; else - rc = server->ops->async_writev(wdata, - cifs_uncached_writedata_release); + rc = server->ops->async_writev(wdata, wdata->release); } if (rc) { add_credits_and_wake_if(server, &wdata->credits, 0); - kref_put(&wdata->refcount, - cifs_uncached_writedata_release); + kref_put(&wdata->refcount, wdata->release); if (rc == -EAGAIN) { *from = saved_from; iov_iter_advance(from, offset - saved_offset); @@ -3444,8 +3448,7 @@ static void collect_uncached_write_data(struct cifs_aio_ctx *ctx) ctx->cfile, cifs_sb, &tmp_list, ctx); - kref_put(&wdata->refcount, - cifs_uncached_writedata_release); + kref_put(&wdata->refcount, wdata->release); } list_splice(&tmp_list, &ctx->list); @@ -3453,7 +3456,7 @@ static void collect_uncached_write_data(struct cifs_aio_ctx *ctx) } } list_del_init(&wdata->list); - kref_put(&wdata->refcount, cifs_uncached_writedata_release); + kref_put(&wdata->refcount, wdata->release); } cifs_stats_bytes_written(tcon, ctx->total_len);