diff options
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index b04883e74579..4ba5957ae089 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -63,7 +63,7 @@ extern void __init files_maxfiles_init(void); extern struct files_stat_struct files_stat; extern unsigned long get_max_files(void); -extern int sysctl_nr_open; +extern unsigned int sysctl_nr_open; extern struct inodes_stat_t inodes_stat; extern int leases_enable, lease_break_time; extern int sysctl_protected_symlinks; @@ -224,6 +224,7 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset, #define ATTR_KILL_PRIV (1 << 14) #define ATTR_OPEN (1 << 15) /* Truncating from open(O_TRUNC) */ #define ATTR_TIMES_SET (1 << 16) +#define ATTR_TOUCH (1 << 17) /* * Whiteout is represented by a char device. The following constants define the @@ -1064,6 +1065,18 @@ struct file_lock_context { extern void send_sigio(struct fown_struct *fown, int fd, int band); +/* + * Return the inode to use for locking + * + * For overlayfs this should be the overlay inode, not the real inode returned + * by file_inode(). For any other fs file_inode(filp) and locks_inode(filp) are + * equal. + */ +static inline struct inode *locks_inode(const struct file *f) +{ + return f->f_path.dentry->d_inode; +} + #ifdef CONFIG_FILE_LOCKING extern int fcntl_getlk(struct file *, unsigned int, struct flock __user *); extern int fcntl_setlk(unsigned int, struct file *, unsigned int, @@ -1251,7 +1264,7 @@ static inline struct dentry *file_dentry(const struct file *file) static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl) { - return locks_lock_inode_wait(file_inode(filp), fl); + return locks_lock_inode_wait(locks_inode(filp), fl); } struct fasync_struct { @@ -2006,7 +2019,6 @@ enum file_time_flags { S_VERSION = 8, }; -extern bool atime_needs_update(const struct path *, struct inode *); extern void touch_atime(const struct path *); static inline void file_accessed(struct file *file) { @@ -2155,7 +2167,7 @@ static inline int mandatory_lock(struct inode *ino) static inline int locks_verify_locked(struct file *file) { - if (mandatory_lock(file_inode(file))) + if (mandatory_lock(locks_inode(file))) return locks_mandatory_locked(file); return 0; } @@ -2993,7 +3005,7 @@ extern int buffer_migrate_page(struct address_space *, #define buffer_migrate_page NULL #endif -extern int inode_change_ok(const struct inode *, struct iattr *); +extern int setattr_prepare(struct dentry *, struct iattr *); extern int inode_newsize_ok(const struct inode *, loff_t offset); extern void setattr_copy(struct inode *inode, const struct iattr *attr); |