From mboxrd@z Thu Jan 1 00:00:00 1970 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 7BB5CC433EF for ; Fri, 25 Mar 2022 12:23:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1359099AbiCYMZZ (ORCPT ); Fri, 25 Mar 2022 08:25:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1359042AbiCYMYo (ORCPT ); Fri, 25 Mar 2022 08:24:44 -0400 Received: from out30-44.freemail.mail.aliyun.com (out30-44.freemail.mail.aliyun.com [115.124.30.44]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9D61D5562; Fri, 25 Mar 2022 05:22:48 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R201e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04395;MF=jefflexu@linux.alibaba.com;NM=1;PH=DS;RN=18;SR=0;TI=SMTPD_---0V89aFsk_1648210962; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0V89aFsk_1648210962) by smtp.aliyun-inc.com(127.0.0.1); Fri, 25 Mar 2022 20:22:43 +0800 From: Jeffle Xu To: dhowells@redhat.com, linux-cachefs@redhat.com, xiang@kernel.org, chao@kernel.org, linux-erofs@lists.ozlabs.org Cc: torvalds@linux-foundation.org, gregkh@linuxfoundation.org, willy@infradead.org, linux-fsdevel@vger.kernel.org, joseph.qi@linux.alibaba.com, bo.liu@linux.alibaba.com, tao.peng@linux.alibaba.com, gerry@linux.alibaba.com, eguan@linux.alibaba.com, linux-kernel@vger.kernel.org, luodaowen.backend@bytedance.com, tianzichen@kuaishou.com, fannaihao@baidu.com Subject: [PATCH v6 12/22] erofs: add cookie context helper functions Date: Fri, 25 Mar 2022 20:22:13 +0800 Message-Id: <20220325122223.102958-13-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220325122223.102958-1-jefflexu@linux.alibaba.com> References: <20220325122223.102958-1-jefflexu@linux.alibaba.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce "struct erofs_fscache" for managing cookie for backinig file, and helper functions for initializing and cleaning up this context structure. Signed-off-by: Jeffle Xu --- fs/erofs/fscache.c | 61 +++++++++++++++++++++++++++++++++++++++++++++ fs/erofs/internal.h | 14 +++++++++++ 2 files changed, 75 insertions(+) diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c index 08cf570a0810..73235fd43bf6 100644 --- a/fs/erofs/fscache.c +++ b/fs/erofs/fscache.c @@ -7,6 +7,67 @@ static struct fscache_volume *volume; +static int erofs_fscache_init_cookie(struct erofs_fscache *ctx, char *path) +{ + struct fscache_cookie *cookie; + + cookie = fscache_acquire_cookie(volume, FSCACHE_ADV_WANT_CACHE_SIZE, + path, strlen(path), + NULL, 0, 0); + if (!cookie) + return -EINVAL; + + fscache_use_cookie(cookie, false); + ctx->cookie = cookie; + return 0; +} + +static inline void erofs_fscache_cleanup_cookie(struct erofs_fscache *ctx) +{ + struct fscache_cookie *cookie = ctx->cookie; + + fscache_unuse_cookie(cookie, NULL, NULL); + fscache_relinquish_cookie(cookie, false); + ctx->cookie = NULL; +} + +/* + * erofs_fscache_get - create an fscache context for blob file + * @sb: superblock + * @path: name of blob file + * + * Return: fscache context on success, ERR_PTR() on failure. + */ +struct erofs_fscache *erofs_fscache_get(struct super_block *sb, char *path) +{ + struct erofs_fscache *ctx; + int ret; + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return ERR_PTR(-ENOMEM); + + ret = erofs_fscache_init_cookie(ctx, path); + if (ret) { + erofs_err(sb, "failed to init cookie"); + goto err; + } + + return ctx; +err: + kfree(ctx); + return ERR_PTR(ret); +} + +void erofs_fscache_put(struct erofs_fscache *ctx) +{ + if (!ctx) + return; + + erofs_fscache_cleanup_cookie(ctx); + kfree(ctx); +} + int __init erofs_init_fscache(void) { volume = fscache_acquire_volume("erofs", NULL, NULL, 0); diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 45b8b0dd8a27..d4f2b43cedae 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -96,6 +96,10 @@ struct erofs_sb_lz4_info { u16 max_pclusterblks; }; +struct erofs_fscache { + struct fscache_cookie *cookie; +}; + struct erofs_sb_info { struct erofs_mount_opts opt; /* options */ #ifdef CONFIG_EROFS_FS_ZIP @@ -620,9 +624,19 @@ static inline int z_erofs_load_lzma_config(struct super_block *sb, #ifdef CONFIG_EROFS_FS_ONDEMAND int erofs_init_fscache(void); void erofs_exit_fscache(void); + +struct erofs_fscache *erofs_fscache_get(struct super_block *sb, char *path); +void erofs_fscache_put(struct erofs_fscache *ctx); #else static inline int erofs_init_fscache(void) { return 0; } static inline void erofs_exit_fscache(void) {} + +static inline struct erofs_fscache *erofs_fscache_get(struct super_block *sb, + char *path) +{ + return ERR_PTR(-EOPNOTSUPP); +} +static inline void erofs_fscache_put(struct erofs_fscache *ctx) {} #endif #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ -- 2.27.0 From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 784D1C433FE for ; Fri, 25 Mar 2022 12:23:00 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4KQ1Sz0rY4z3bTx for ; Fri, 25 Mar 2022 23:22:59 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=linux.alibaba.com (client-ip=115.124.30.43; helo=out30-43.freemail.mail.aliyun.com; envelope-from=jefflexu@linux.alibaba.com; receiver=) Received: from out30-43.freemail.mail.aliyun.com (out30-43.freemail.mail.aliyun.com [115.124.30.43]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4KQ1St24Vkz3bNn for ; Fri, 25 Mar 2022 23:22:53 +1100 (AEDT) X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R201e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04395; MF=jefflexu@linux.alibaba.com; NM=1; PH=DS; RN=18; SR=0; TI=SMTPD_---0V89aFsk_1648210962; Received: from localhost(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0V89aFsk_1648210962) by smtp.aliyun-inc.com(127.0.0.1); Fri, 25 Mar 2022 20:22:43 +0800 From: Jeffle Xu To: dhowells@redhat.com, linux-cachefs@redhat.com, xiang@kernel.org, chao@kernel.org, linux-erofs@lists.ozlabs.org Subject: [PATCH v6 12/22] erofs: add cookie context helper functions Date: Fri, 25 Mar 2022 20:22:13 +0800 Message-Id: <20220325122223.102958-13-jefflexu@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220325122223.102958-1-jefflexu@linux.alibaba.com> References: <20220325122223.102958-1-jefflexu@linux.alibaba.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linux-erofs@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development of Linux EROFS file system List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: gregkh@linuxfoundation.org, fannaihao@baidu.com, willy@infradead.org, linux-kernel@vger.kernel.org, tianzichen@kuaishou.com, joseph.qi@linux.alibaba.com, linux-fsdevel@vger.kernel.org, luodaowen.backend@bytedance.com, gerry@linux.alibaba.com, torvalds@linux-foundation.org Errors-To: linux-erofs-bounces+linux-erofs=archiver.kernel.org@lists.ozlabs.org Sender: "Linux-erofs" Introduce "struct erofs_fscache" for managing cookie for backinig file, and helper functions for initializing and cleaning up this context structure. Signed-off-by: Jeffle Xu --- fs/erofs/fscache.c | 61 +++++++++++++++++++++++++++++++++++++++++++++ fs/erofs/internal.h | 14 +++++++++++ 2 files changed, 75 insertions(+) diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c index 08cf570a0810..73235fd43bf6 100644 --- a/fs/erofs/fscache.c +++ b/fs/erofs/fscache.c @@ -7,6 +7,67 @@ static struct fscache_volume *volume; +static int erofs_fscache_init_cookie(struct erofs_fscache *ctx, char *path) +{ + struct fscache_cookie *cookie; + + cookie = fscache_acquire_cookie(volume, FSCACHE_ADV_WANT_CACHE_SIZE, + path, strlen(path), + NULL, 0, 0); + if (!cookie) + return -EINVAL; + + fscache_use_cookie(cookie, false); + ctx->cookie = cookie; + return 0; +} + +static inline void erofs_fscache_cleanup_cookie(struct erofs_fscache *ctx) +{ + struct fscache_cookie *cookie = ctx->cookie; + + fscache_unuse_cookie(cookie, NULL, NULL); + fscache_relinquish_cookie(cookie, false); + ctx->cookie = NULL; +} + +/* + * erofs_fscache_get - create an fscache context for blob file + * @sb: superblock + * @path: name of blob file + * + * Return: fscache context on success, ERR_PTR() on failure. + */ +struct erofs_fscache *erofs_fscache_get(struct super_block *sb, char *path) +{ + struct erofs_fscache *ctx; + int ret; + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return ERR_PTR(-ENOMEM); + + ret = erofs_fscache_init_cookie(ctx, path); + if (ret) { + erofs_err(sb, "failed to init cookie"); + goto err; + } + + return ctx; +err: + kfree(ctx); + return ERR_PTR(ret); +} + +void erofs_fscache_put(struct erofs_fscache *ctx) +{ + if (!ctx) + return; + + erofs_fscache_cleanup_cookie(ctx); + kfree(ctx); +} + int __init erofs_init_fscache(void) { volume = fscache_acquire_volume("erofs", NULL, NULL, 0); diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index 45b8b0dd8a27..d4f2b43cedae 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -96,6 +96,10 @@ struct erofs_sb_lz4_info { u16 max_pclusterblks; }; +struct erofs_fscache { + struct fscache_cookie *cookie; +}; + struct erofs_sb_info { struct erofs_mount_opts opt; /* options */ #ifdef CONFIG_EROFS_FS_ZIP @@ -620,9 +624,19 @@ static inline int z_erofs_load_lzma_config(struct super_block *sb, #ifdef CONFIG_EROFS_FS_ONDEMAND int erofs_init_fscache(void); void erofs_exit_fscache(void); + +struct erofs_fscache *erofs_fscache_get(struct super_block *sb, char *path); +void erofs_fscache_put(struct erofs_fscache *ctx); #else static inline int erofs_init_fscache(void) { return 0; } static inline void erofs_exit_fscache(void) {} + +static inline struct erofs_fscache *erofs_fscache_get(struct super_block *sb, + char *path) +{ + return ERR_PTR(-EOPNOTSUPP); +} +static inline void erofs_fscache_put(struct erofs_fscache *ctx) {} #endif #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ -- 2.27.0