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fs: add kerneldoc to file_{start,end}_write() helpers

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and use sb_end_write() instead of open coded version.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Message-Id: <20230817141337.1025891-3-amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Amir Goldstein 2023-08-17 17:13:32 +03:00 committed by Christian Brauner
parent a370167fe5
commit f6c05b9e5d
1 changed files with 14 additions and 1 deletions
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15
include/linux/fs.h
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@ -2539,6 +2539,13 @@ static inline bool inode_wrong_type(const struct inode *inode, umode_t mode)
return (inode->i_mode ^ mode) & S_IFMT;
}
/**
* file_start_write - get write access to a superblock for regular file io
* @file: the file we want to write to
*
* This is a variant of sb_start_write() which is a noop on non-regualr file.
* Should be matched with a call to file_end_write().
*/
static inline void file_start_write(struct file *file)
{
if (!S_ISREG(file_inode(file)->i_mode))
@ -2553,11 +2560,17 @@ static inline bool file_start_write_trylock(struct file *file)
return sb_start_write_trylock(file_inode(file)->i_sb);
}
/**
* file_end_write - drop write access to a superblock of a regular file
* @file: the file we wrote to
*
* Should be matched with a call to file_start_write().
*/
static inline void file_end_write(struct file *file)
{
if (!S_ISREG(file_inode(file)->i_mode))
return;
__sb_end_write(file_inode(file)->i_sb, SB_FREEZE_WRITE);
sb_end_write(file_inode(file)->i_sb);
}
/*