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fs: add kerneldoc to file_{start,end}_write() helpers
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>
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1 changed files with 14 additions and 1 deletions
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@ -2539,6 +2539,13 @@ static inline bool inode_wrong_type(const struct inode *inode, umode_t mode)
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return (inode->i_mode ^ mode) & S_IFMT;
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}
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/**
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* file_start_write - get write access to a superblock for regular file io
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* @file: the file we want to write to
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*
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* This is a variant of sb_start_write() which is a noop on non-regualr file.
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* Should be matched with a call to file_end_write().
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*/
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static inline void file_start_write(struct file *file)
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{
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if (!S_ISREG(file_inode(file)->i_mode))
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@ -2553,11 +2560,17 @@ static inline bool file_start_write_trylock(struct file *file)
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return sb_start_write_trylock(file_inode(file)->i_sb);
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}
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/**
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* file_end_write - drop write access to a superblock of a regular file
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* @file: the file we wrote to
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*
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* Should be matched with a call to file_start_write().
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*/
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static inline void file_end_write(struct file *file)
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{
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if (!S_ISREG(file_inode(file)->i_mode))
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return;
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__sb_end_write(file_inode(file)->i_sb, SB_FREEZE_WRITE);
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sb_end_write(file_inode(file)->i_sb);
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}
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/*
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