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[2a02:3100:b260:f201:9983:e8c4:aff5:7a36]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49e60ad0614sm147509485e9.10.2026.09.12.00.34.46 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sat, 12 Sep 2026 00:34:46 -0700 (PDT) From: Karl Mehltretter To: David Howells , Paulo Alcantara , Jonathan Corbet Cc: Karl Mehltretter , Shuah Khan , Randy Dunlap , Christian Brauner , netfs@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] netfs: Document the remote size member and its accessors Date: Sat, 12 Sep 2026 09:34:44 +0200 Message-Id: <20260912073444.51152-1-kmehltretter@gmail.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit netfs_inode.remote_i_size was renamed to _remote_i_size and accessors were added to prevent torn accesses. The netfs library documentation still shows the old member name. Update the struct excerpt and member description. Direct readers to netfs_read_remote_i_size() and netfs_write_remote_i_size(), and state that writes require inode->i_lock. Fixes: 2c8f4742bb76 ("netfs: Fix potential for tearing in ->remote_i_size and ->zero_point") Assisted-by: LLM Signed-off-by: Karl Mehltretter --- Documentation/filesystems/netfs_library.rst | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/Documentation/filesystems/netfs_library.rst b/Documentation/filesystems/netfs_library.rst index ddd799df6ce363d9c348b4f1e82d66b1b54bf4fd..0c9786ffe19240233ea0d8b725dd8300b9f57759 100644 --- a/Documentation/filesystems/netfs_library.rst +++ b/Documentation/filesystems/netfs_library.rst @@ -195,7 +195,7 @@ structure is defined:: struct inode inode; const struct netfs_request_ops *ops; struct fscache_cookie * cache; - loff_t remote_i_size; + loff_t _remote_i_size; unsigned long flags; ... }; @@ -229,11 +229,14 @@ filesystem: Local caching cookie, or NULL if no caching is enabled. This field does not exist if fscache is disabled. - * ``remote_i_size`` + * ``_remote_i_size`` The size of the file on the server. This differs from inode->i_size if local modifications have been made but not yet written back. + Use netfs_read_remote_i_size() and netfs_write_remote_i_size() to access + this field. Hold inode->i_lock when writing it. + * ``flags`` A set of flags, some of which the filesystem might be interested in: -- 2.39.5 (Apple Git-154)