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| author | Al Viro <viro@zeniv.linux.org.uk> | 2013-01-23 17:07:38 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-02-22 23:31:31 -0500 |
| commit | 496ad9aa8ef448058e36ca7a787c61f2e63f0f54 (patch) | |
| tree | 8f4abde793cd7db5bb8fde6d27ebcacd0e54379a /include/linux/fs.h | |
| parent | 57eccb830f1cc93d4b506ba306d8dfa685e0c88f (diff) | |
| download | linux-stable-496ad9aa8ef448058e36ca7a787c61f2e63f0f54.tar.gz linux-stable-496ad9aa8ef448058e36ca7a787c61f2e63f0f54.tar.bz2 linux-stable-496ad9aa8ef448058e36ca7a787c61f2e63f0f54.zip | |
new helper: file_inode(file)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 7617ee04f066..3ab69777b4d8 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2217,6 +2217,11 @@ static inline bool execute_ok(struct inode *inode) return (inode->i_mode & S_IXUGO) || S_ISDIR(inode->i_mode); } +static inline struct inode *file_inode(struct file *f) +{ + return f->f_path.dentry->d_inode; +} + /* * get_write_access() gets write permission for a file. * put_write_access() releases this write permission. @@ -2239,7 +2244,7 @@ static inline int get_write_access(struct inode *inode) } static inline int deny_write_access(struct file *file) { - struct inode *inode = file->f_path.dentry->d_inode; + struct inode *inode = file_inode(file); return atomic_dec_unless_positive(&inode->i_writecount) ? 0 : -ETXTBSY; } static inline void put_write_access(struct inode * inode) @@ -2249,7 +2254,7 @@ static inline void put_write_access(struct inode * inode) static inline void allow_write_access(struct file *file) { if (file) - atomic_inc(&file->f_path.dentry->d_inode->i_writecount); + atomic_inc(&file_inode(file)->i_writecount); } #ifdef CONFIG_IMA static inline void i_readcount_dec(struct inode *inode) |