From: Jeffle Xu <jefflexu@linux.alibaba.com> To: dhowells@redhat.com, linux-cachefs@redhat.com, xiang@kernel.org, chao@kernel.org, linux-erofs@lists.ozlabs.org Cc: 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 Subject: [PATCH v1 09/23] erofs: add cookie context helper functions Date: Mon, 27 Dec 2021 20:54:30 +0800 [thread overview] Message-ID: <20211227125444.21187-10-jefflexu@linux.alibaba.com> (raw) In-Reply-To: <20211227125444.21187-1-jefflexu@linux.alibaba.com> Introduce 'struct erofs_cookie_ctx' for managing cookie for backing file, and the following introduced API for reading from backing file. Besides, introduce two helper functions for initializing and cleaning up erofs_cookie_ctx. struct erofs_cookie_ctx * erofs_fscache_get_ctx(struct super_block *sb, char *path); void erofs_fscache_put_ctx(struct erofs_cookie_ctx *ctx); Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> --- fs/erofs/fscache.c | 75 +++++++++++++++++++++++++++++++++++++++++++++ fs/erofs/internal.h | 8 +++++ 2 files changed, 83 insertions(+) diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c index cdbbe3f15a20..15c5bb0f8ea5 100644 --- a/fs/erofs/fscache.c +++ b/fs/erofs/fscache.c @@ -6,6 +6,81 @@ static struct fscache_volume *volume; +static int erofs_fscache_init_cookie(struct erofs_cookie_ctx *ctx, char *path) +{ + struct fscache_cookie *cookie; + + /* + * @object_size shall be non-zero to avoid + * FSCACHE_COOKIE_NO_DATA_TO_READ. + */ + cookie = fscache_acquire_cookie(volume, 0, + path, strlen(path), + NULL, 0, -1); + if (!cookie) + return -EINVAL; + + fscache_use_cookie(cookie, false); + ctx->cookie = cookie; + return 0; +} + +static void erofs_fscache_cleanup_cookie(struct erofs_cookie_ctx *ctx) +{ + struct fscache_cookie *cookie = ctx->cookie; + + fscache_unuse_cookie(cookie, NULL, NULL); + fscache_relinquish_cookie(cookie, false); + ctx->cookie = NULL; +} + +static int erofs_fscahce_init_ctx(struct erofs_cookie_ctx *ctx, + struct super_block *sb, char *path) +{ + int ret; + + ret = erofs_fscache_init_cookie(ctx, path); + if (ret) { + erofs_err(sb, "failed to init cookie\n"); + return ret; + } + + return 0; +} + +static void erofs_fscache_cleanup_ctx(struct erofs_cookie_ctx *ctx) +{ + erofs_fscache_cleanup_cookie(ctx); +} + +struct erofs_cookie_ctx *erofs_fscache_get_ctx(struct super_block *sb, + char *path) +{ + struct erofs_cookie_ctx *ctx; + int ret; + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return ERR_PTR(-ENOMEM); + + ret = erofs_fscahce_init_ctx(ctx, sb, path); + if (ret) { + kfree(ctx); + return ERR_PTR(ret); + } + + return ctx; +} + +void erofs_fscache_put_ctx(struct erofs_cookie_ctx *ctx) +{ + if (!ctx) + return; + + erofs_fscache_cleanup_ctx(ctx); + kfree(ctx); +} + int __init erofs_fscache_init(void) { volume = fscache_acquire_volume("erofs", NULL, NULL, 0); diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index d464642e9d35..4179c3dcb7f9 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -91,6 +91,10 @@ struct erofs_sb_lz4_info { u16 max_pclusterblks; }; +struct erofs_cookie_ctx { + struct fscache_cookie *cookie; +}; + struct erofs_sb_info { struct erofs_mount_opts opt; /* options */ #ifdef CONFIG_EROFS_FS_ZIP @@ -574,6 +578,10 @@ static inline int z_erofs_load_lzma_config(struct super_block *sb, int erofs_fscache_init(void); void erofs_fscache_cleanup(void); +struct erofs_cookie_ctx *erofs_fscache_get_ctx(struct super_block *sb, + char *path); +void erofs_fscache_put_ctx(struct erofs_cookie_ctx *ctx); + #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ #endif /* __EROFS_INTERNAL_H */ -- 2.27.0
WARNING: multiple messages have this Message-ID (diff)
From: Jeffle Xu <jefflexu@linux.alibaba.com> To: dhowells@redhat.com, linux-cachefs@redhat.com, xiang@kernel.org, chao@kernel.org, linux-erofs@lists.ozlabs.org Cc: tao.peng@linux.alibaba.com, linux-kernel@vger.kernel.org, joseph.qi@linux.alibaba.com, bo.liu@linux.alibaba.com, linux-fsdevel@vger.kernel.org, eguan@linux.alibaba.com, gerry@linux.alibaba.com Subject: [PATCH v1 09/23] erofs: add cookie context helper functions Date: Mon, 27 Dec 2021 20:54:30 +0800 [thread overview] Message-ID: <20211227125444.21187-10-jefflexu@linux.alibaba.com> (raw) In-Reply-To: <20211227125444.21187-1-jefflexu@linux.alibaba.com> Introduce 'struct erofs_cookie_ctx' for managing cookie for backing file, and the following introduced API for reading from backing file. Besides, introduce two helper functions for initializing and cleaning up erofs_cookie_ctx. struct erofs_cookie_ctx * erofs_fscache_get_ctx(struct super_block *sb, char *path); void erofs_fscache_put_ctx(struct erofs_cookie_ctx *ctx); Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> --- fs/erofs/fscache.c | 75 +++++++++++++++++++++++++++++++++++++++++++++ fs/erofs/internal.h | 8 +++++ 2 files changed, 83 insertions(+) diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c index cdbbe3f15a20..15c5bb0f8ea5 100644 --- a/fs/erofs/fscache.c +++ b/fs/erofs/fscache.c @@ -6,6 +6,81 @@ static struct fscache_volume *volume; +static int erofs_fscache_init_cookie(struct erofs_cookie_ctx *ctx, char *path) +{ + struct fscache_cookie *cookie; + + /* + * @object_size shall be non-zero to avoid + * FSCACHE_COOKIE_NO_DATA_TO_READ. + */ + cookie = fscache_acquire_cookie(volume, 0, + path, strlen(path), + NULL, 0, -1); + if (!cookie) + return -EINVAL; + + fscache_use_cookie(cookie, false); + ctx->cookie = cookie; + return 0; +} + +static void erofs_fscache_cleanup_cookie(struct erofs_cookie_ctx *ctx) +{ + struct fscache_cookie *cookie = ctx->cookie; + + fscache_unuse_cookie(cookie, NULL, NULL); + fscache_relinquish_cookie(cookie, false); + ctx->cookie = NULL; +} + +static int erofs_fscahce_init_ctx(struct erofs_cookie_ctx *ctx, + struct super_block *sb, char *path) +{ + int ret; + + ret = erofs_fscache_init_cookie(ctx, path); + if (ret) { + erofs_err(sb, "failed to init cookie\n"); + return ret; + } + + return 0; +} + +static void erofs_fscache_cleanup_ctx(struct erofs_cookie_ctx *ctx) +{ + erofs_fscache_cleanup_cookie(ctx); +} + +struct erofs_cookie_ctx *erofs_fscache_get_ctx(struct super_block *sb, + char *path) +{ + struct erofs_cookie_ctx *ctx; + int ret; + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return ERR_PTR(-ENOMEM); + + ret = erofs_fscahce_init_ctx(ctx, sb, path); + if (ret) { + kfree(ctx); + return ERR_PTR(ret); + } + + return ctx; +} + +void erofs_fscache_put_ctx(struct erofs_cookie_ctx *ctx) +{ + if (!ctx) + return; + + erofs_fscache_cleanup_ctx(ctx); + kfree(ctx); +} + int __init erofs_fscache_init(void) { volume = fscache_acquire_volume("erofs", NULL, NULL, 0); diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h index d464642e9d35..4179c3dcb7f9 100644 --- a/fs/erofs/internal.h +++ b/fs/erofs/internal.h @@ -91,6 +91,10 @@ struct erofs_sb_lz4_info { u16 max_pclusterblks; }; +struct erofs_cookie_ctx { + struct fscache_cookie *cookie; +}; + struct erofs_sb_info { struct erofs_mount_opts opt; /* options */ #ifdef CONFIG_EROFS_FS_ZIP @@ -574,6 +578,10 @@ static inline int z_erofs_load_lzma_config(struct super_block *sb, int erofs_fscache_init(void); void erofs_fscache_cleanup(void); +struct erofs_cookie_ctx *erofs_fscache_get_ctx(struct super_block *sb, + char *path); +void erofs_fscache_put_ctx(struct erofs_cookie_ctx *ctx); + #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ #endif /* __EROFS_INTERNAL_H */ -- 2.27.0
next prev parent reply other threads:[~2021-12-27 12:55 UTC|newest] Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-27 12:54 [PATCH v1 00/23] fscache,erofs: fscache-based demand-read semantics Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 01/23] cachefiles: add cachefiles_demand devnode Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-28 2:47 ` Joseph Qi 2021-12-28 2:47 ` Joseph Qi 2021-12-28 12:34 ` JeffleXu 2021-12-28 12:34 ` JeffleXu 2021-12-27 12:54 ` [PATCH v1 02/23] cachefiles: add mode command to distinguish modes Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 03/23] cachefiles: detect backing file size in demand-read mode Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 04/23] netfs: make ops->init_rreq() optional Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 05/23] netfs: add inode parameter to netfs_alloc_read_request() Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2022-01-04 14:00 ` Gao Xiang 2022-01-04 14:00 ` Gao Xiang 2022-01-13 3:10 ` [Linux-cachefs] " JeffleXu 2022-01-13 3:10 ` JeffleXu 2022-01-13 12:09 ` Gao Xiang 2022-01-13 12:09 ` Gao Xiang 2021-12-27 12:54 ` [PATCH v1 06/23] erofs: export erofs_map_blocks() Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 07/23] erofs: add nodev mode Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2022-01-04 14:33 ` Gao Xiang 2022-01-04 14:33 ` Gao Xiang 2022-01-04 14:58 ` Gao Xiang 2022-01-04 14:58 ` Gao Xiang 2022-01-05 9:04 ` JeffleXu 2021-12-27 12:54 ` [PATCH v1 08/23] erofs: register global fscache volume Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu [this message] 2021-12-27 12:54 ` [PATCH v1 09/23] erofs: add cookie context helper functions Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 10/23] erofs: add anonymous inode managing page cache of blob file Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 11/23] erofs: register cookie context for bootstrap Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 12/23] erofs: implement fscache-based metadata read Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 17:07 ` kernel test robot 2021-12-27 17:07 ` kernel test robot 2021-12-27 17:07 ` kernel test robot 2021-12-27 17:17 ` kernel test robot 2021-12-27 17:17 ` kernel test robot 2021-12-27 17:17 ` kernel test robot 2021-12-27 12:54 ` [PATCH v1 13/23] erofs: implement fscache-based data read Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2022-01-03 6:32 ` JeffleXu 2022-01-03 6:32 ` JeffleXu 2022-01-04 14:40 ` Gao Xiang 2022-01-04 14:40 ` Gao Xiang 2022-01-05 2:29 ` JeffleXu 2021-12-27 12:54 ` [PATCH v1 14/23] erofs: register cookie context for data blobs Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 15/23] erofs: implement fscache-based data read " Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 16/23] erofs: add 'uuid' mount option Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 17/23] netfs: support on demand read Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 18/23] cachefiles: use idr tree managing pending " Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 19/23] cachefiles: implement .demand_read() for " Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 15:32 ` kernel test robot 2021-12-27 15:32 ` kernel test robot 2021-12-27 15:32 ` kernel test robot 2021-12-27 15:36 ` Matthew Wilcox 2021-12-27 15:36 ` Matthew Wilcox 2021-12-28 12:33 ` JeffleXu 2021-12-28 12:33 ` JeffleXu 2022-01-12 9:02 ` JeffleXu 2022-01-12 9:02 ` JeffleXu 2022-01-19 13:20 ` Matthew Wilcox 2022-01-19 13:20 ` Matthew Wilcox 2022-01-20 12:43 ` JeffleXu 2022-01-20 12:43 ` JeffleXu 2021-12-27 15:55 ` kernel test robot 2021-12-27 15:55 ` kernel test robot 2021-12-27 15:55 ` kernel test robot 2021-12-27 12:54 ` [PATCH v1 20/23] cachefiles: implement .poll() " Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 21/23] cachefiles: implement .read() " Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 22/23] cachefiles: add done command " Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu 2021-12-27 12:54 ` [PATCH v1 23/23] erofs: support on " Jeffle Xu 2021-12-27 12:54 ` Jeffle Xu
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