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

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Date:   Tue, 16 Nov 2021 16:06:11 +0800
From:   Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
To:     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
Cc:     Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
Subject: [PATCH] fs: Eliminate compilation warnings for misc

Eliminate the following clang compilation warnings by adding or
fixing function comment:

  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
-- 
2.32.0