linux-kernel - Re: [PATCH] fs: Eliminate compilation warnings for misc

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Date:   Tue, 16 Nov 2021 15:00:54 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fs: Eliminate compilation warnings for misc

On 11/16/21 12:06 AM, Tianjia Zhang wrote:
> Eliminate the following clang compilation warnings by adding or
> fixing function comment:

These are from clang?  They all appear to be from scripts/kernel-doc.

Can someone please clarify?

thanks.

>    fs/file.c:655: warning: Function parameter or member 'fdt' not described in 'last_fd'
>    fs/file.c:655: warning: Excess function parameter 'cur_fds' description in 'last_fd'
>    fs/file.c:703: warning: Function parameter or member 'flags' not described in '__close_range'
> 
>    fs/fs_context.c:202: warning: Function parameter or member 'fc' not described in 'generic_parse_monolithic'
>    fs/fs_context.c:202: warning: Excess function parameter 'ctx' description in 'generic_parse_monolithic'
>    fs/fs_context.c:386: warning: Function parameter or member 'log' not described in 'logfc'
>    fs/fs_context.c:386: warning: Function parameter or member 'prefix' not described in 'logfc'
>    fs/fs_context.c:386: warning: Function parameter or member 'level' not described in 'logfc'
>    fs/fs_context.c:386: warning: Excess function parameter 'fc' description in 'logfc'
> 
>    fs/namei.c:1044: warning: Function parameter or member 'inode' not described in 'may_follow_link'
> 
>    fs/read_write.c:88: warning: Function parameter or member 'maxsize' not described in 'generic_file_llseek_size'
>    fs/read_write.c:88: warning: Excess function parameter 'size' description in 'generic_file_llseek_size'
> 
> Signed-off-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
> ---
>   fs/file.c       | 3 ++-
>   fs/fs_context.c | 6 ++++--
>   fs/namei.c      | 1 +
>   fs/read_write.c | 2 +-
>   4 files changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/fs/file.c b/fs/file.c
> index 8627dacfc424..ab3b635b0c86 100644
> --- a/fs/file.c
> +++ b/fs/file.c
> @@ -645,7 +645,7 @@ EXPORT_SYMBOL(close_fd); /* for ksys_close() */
>   
>   /**
>    * last_fd - return last valid index into fd table
> - * @cur_fds: files struct
> + * @fdt: fdtable struct
>    *
>    * Context: Either rcu read lock or files_lock must be held.
>    *
> @@ -695,6 +695,7 @@ static inline void __range_close(struct files_struct *cur_fds, unsigned int fd,
>    *
>    * @fd:     starting file descriptor to close
>    * @max_fd: last file descriptor to close
> + * @flags:  close range flags
>    *
>    * This closes a range of file descriptors. All file descriptors
>    * from @fd up to and including @max_fd are closed.
> diff --git a/fs/fs_context.c b/fs/fs_context.c
> index b7e43a780a62..e94fb7f19d3f 100644
> --- a/fs/fs_context.c
> +++ b/fs/fs_context.c
> @@ -189,7 +189,7 @@ EXPORT_SYMBOL(vfs_parse_fs_string);
>   
>   /**
>    * generic_parse_monolithic - Parse key[=val][,key[=val]]* mount data
> - * @ctx: The superblock configuration to fill in.
> + * @fc: filesystem context
>    * @data: The data to parse
>    *
>    * Parse a blob of data that's in key[=val][,key[=val]]* form.  This can be
> @@ -379,7 +379,9 @@ EXPORT_SYMBOL(vfs_dup_fs_context);
>   
>   /**
>    * logfc - Log a message to a filesystem context
> - * @fc: The filesystem context to log to.
> + * @log: The filesystem context to log to.
> + * @prefix: The log prefix.
> + * @level: The log level.
>    * @fmt: The format of the buffer.
>    */
>   void logfc(struct fc_log *log, const char *prefix, char level, const char *fmt, ...)
> diff --git a/fs/namei.c b/fs/namei.c
> index 1f9d2187c765..3bc73b4f39c9 100644
> --- a/fs/namei.c
> +++ b/fs/namei.c
> @@ -1028,6 +1028,7 @@ int sysctl_protected_regular __read_mostly;
>   /**
>    * may_follow_link - Check symlink following for unsafe situations
>    * @nd: nameidata pathwalk data
> + * @inode: inode to check
>    *
>    * In the case of the sysctl_protected_symlinks sysctl being enabled,
>    * CAP_DAC_OVERRIDE needs to be specifically ignored if the symlink is
> diff --git a/fs/read_write.c b/fs/read_write.c
> index 0074afa7ecb3..d7b0f8528930 100644
> --- a/fs/read_write.c
> +++ b/fs/read_write.c
> @@ -71,7 +71,7 @@ EXPORT_SYMBOL(vfs_setpos);
>    * @file:	file structure to seek on
>    * @offset:	file offset to seek to
>    * @whence:	type of seek
> - * @size:	max size of this file in file system
> + * @maxsize:	max size of this file in file system
>    * @eof:	offset used for SEEK_END position
>    *
>    * This is a variant of generic_file_llseek that allows passing in a custom
> 


-- 
~Randy