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: gregkh@linuxfoundation.org, willy@infradead.org, linux-kernel@vger.kernel.org, tianzichen@kuaishou.com, joseph.qi@linux.alibaba.com, zhangjiachen.jaycee@bytedance.com, linux-fsdevel@vger.kernel.org, luodaowen.backend@bytedance.com, gerry@linux.alibaba.com, torvalds@linux-foundation.org, yinxin.x@bytedance.com Subject: [PATCH v11 06/22] cachefiles: enable on-demand read mode Date: Mon, 9 May 2022 15:40:12 +0800 [thread overview] Message-ID: <20220509074028.74954-7-jefflexu@linux.alibaba.com> (raw) In-Reply-To: <20220509074028.74954-1-jefflexu@linux.alibaba.com> Enable on-demand read mode by adding an optional parameter to the "bind" command. On-demand mode will be turned on when this parameter is "ondemand", i.e. "bind ondemand". Otherwise cachefiles will work in the original mode. Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> --- fs/cachefiles/daemon.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c index 5b1d0642c749..aa4efcabb5e3 100644 --- a/fs/cachefiles/daemon.c +++ b/fs/cachefiles/daemon.c @@ -755,11 +755,6 @@ static int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args) cache->brun_percent >= 100) return -ERANGE; - if (*args) { - pr_err("'bind' command doesn't take an argument\n"); - return -EINVAL; - } - if (!cache->rootdirname) { pr_err("No cache directory specified\n"); return -EINVAL; @@ -771,6 +766,18 @@ static int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args) return -EBUSY; } + if (IS_ENABLED(CONFIG_CACHEFILES_ONDEMAND)) { + if (!strcmp(args, "ondemand")) { + set_bit(CACHEFILES_ONDEMAND_MODE, &cache->flags); + } else if (*args) { + pr_err("Invalid argument to the 'bind' command\n"); + return -EINVAL; + } + } else if (*args) { + pr_err("'bind' command doesn't take an argument\n"); + return -EINVAL; + } + /* Make sure we have copies of the tag string */ if (!cache->tag) { /* -- 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: 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, yinxin.x@bytedance.com, zhangjiachen.jaycee@bytedance.com, zhujia.zj@bytedance.com Subject: [PATCH v11 06/22] cachefiles: enable on-demand read mode Date: Mon, 9 May 2022 15:40:12 +0800 [thread overview] Message-ID: <20220509074028.74954-7-jefflexu@linux.alibaba.com> (raw) In-Reply-To: <20220509074028.74954-1-jefflexu@linux.alibaba.com> Enable on-demand read mode by adding an optional parameter to the "bind" command. On-demand mode will be turned on when this parameter is "ondemand", i.e. "bind ondemand". Otherwise cachefiles will work in the original mode. Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> --- fs/cachefiles/daemon.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c index 5b1d0642c749..aa4efcabb5e3 100644 --- a/fs/cachefiles/daemon.c +++ b/fs/cachefiles/daemon.c @@ -755,11 +755,6 @@ static int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args) cache->brun_percent >= 100) return -ERANGE; - if (*args) { - pr_err("'bind' command doesn't take an argument\n"); - return -EINVAL; - } - if (!cache->rootdirname) { pr_err("No cache directory specified\n"); return -EINVAL; @@ -771,6 +766,18 @@ static int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args) return -EBUSY; } + if (IS_ENABLED(CONFIG_CACHEFILES_ONDEMAND)) { + if (!strcmp(args, "ondemand")) { + set_bit(CACHEFILES_ONDEMAND_MODE, &cache->flags); + } else if (*args) { + pr_err("Invalid argument to the 'bind' command\n"); + return -EINVAL; + } + } else if (*args) { + pr_err("'bind' command doesn't take an argument\n"); + return -EINVAL; + } + /* Make sure we have copies of the tag string */ if (!cache->tag) { /* -- 2.27.0
next prev parent reply other threads:[~2022-05-09 7:40 UTC|newest] Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-05-09 7:40 [PATCH v11 00/22] fscache, erofs: fscache-based on-demand read semantics Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 00/22] fscache,erofs: " Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 01/22] cachefiles: extract write routine Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 02/22] cachefiles: notify the user daemon when looking up cookie Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 03/22] cachefiles: unbind cachefiles gracefully in on-demand mode Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 04/22] cachefiles: notify the user daemon when withdrawing cookie Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 05/22] cachefiles: implement on-demand read Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu [this message] 2022-05-09 7:40 ` [PATCH v11 06/22] cachefiles: enable on-demand read mode Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 07/22] cachefiles: add tracepoints for " Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 08/22] cachefiles: document " Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 09/22] erofs: make erofs_map_blocks() generally available Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 10/22] erofs: add fscache mode check helper Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 11/22] erofs: register fscache volume Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 12/22] erofs: add fscache context helper functions Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 13/22] erofs: add anonymous inode caching metadata for data blobs Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 14/22] erofs: add erofs_fscache_read_folios() helper Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 15/22] erofs: register fscache context for primary data blob Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 16/22] erofs: register fscache context for extra data blobs Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 17/22] erofs: implement fscache-based metadata read Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 18/22] erofs: implement fscache-based data read for non-inline layout Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 19/22] erofs: implement fscache-based data read for inline layout Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 20/22] erofs: implement fscache-based data readahead Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 21/22] erofs: add 'fsid' mount option Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-09 7:40 ` [PATCH v11 22/22] erofs: change to use asynchronous io for fscache readpage/readahead Jeffle Xu 2022-05-09 7:40 ` Jeffle Xu 2022-05-10 6:48 ` [PATCH v11 00/22] fscache, erofs: fscache-based on-demand read semantics 严松 2022-05-10 6:48 ` 严松 via Linux-erofs 2022-05-10 12:50 ` [PATCH v11 02/22] cachefiles: notify the user daemon when looking up cookie David Howells 2022-05-10 12:50 ` David Howells 2022-05-10 12:53 ` [PATCH v11 03/22] cachefiles: unbind cachefiles gracefully in on-demand mode David Howells 2022-05-10 12:53 ` David Howells 2022-05-10 12:56 ` [PATCH v11 06/22] cachefiles: enable on-demand read mode David Howells 2022-05-10 12:56 ` David Howells 2022-05-10 13:29 ` Gao Xiang 2022-05-10 13:29 ` Gao Xiang 2022-05-10 13:01 ` [PATCH v11 08/22] cachefiles: document " David Howells 2022-05-10 13:01 ` David Howells 2022-05-10 14:14 ` [PATCH v11 00/22] fscache,erofs: fscache-based on-demand read semantics Chao Yu 2022-05-10 14:14 ` Chao Yu
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