Merge tag 'cpumask-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[firefly-linux-kernel-4.4.55.git] / include / linux / fs.h

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 90a1207231eaeffa7f59de6c13122a6a9f5d6237..c7496f2638601e89d1bc6048653a75aac149ce53 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -315,6 +315,8 @@ struct address_space;
 struct writeback_control;
 
 #define IOCB_EVENTFD           (1 << 0)
+#define IOCB_APPEND            (1 << 1)
+#define IOCB_DIRECT            (1 << 2)
 
 struct kiocb {
        struct file             *ki_filp;
@@ -329,10 +331,13 @@ static inline bool is_sync_kiocb(struct kiocb *kiocb)
        return kiocb->ki_complete == NULL;
 }
 
+static inline int iocb_flags(struct file *file);
+
 static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
 {
        *kiocb = (struct kiocb) {
                .ki_filp = filp,
+               .ki_flags = iocb_flags(filp),
        };
 }
 
@@ -383,7 +388,7 @@ struct address_space_operations {
        void (*invalidatepage) (struct page *, unsigned int, unsigned int);
        int (*releasepage) (struct page *, gfp_t);
        void (*freepage)(struct page *);
-       ssize_t (*direct_IO)(int, struct kiocb *, struct iov_iter *iter, loff_t offset);
+       ssize_t (*direct_IO)(struct kiocb *, struct iov_iter *iter, loff_t offset);
        /*
         * migrate the contents of a page to the specified target. If
         * migrate_mode is MIGRATE_ASYNC, it must not block.
@@ -870,6 +875,7 @@ static inline struct file *get_file(struct file *f)
        atomic_long_inc(&f->f_count);
        return f;
 }
+#define get_file_rcu(x) atomic_long_inc_not_zero(&(x)->f_count)
 #define fput_atomic(x) atomic_long_add_unless(&(x)->f_count, -1, 1)
 #define file_count(x)  atomic_long_read(&(x)->f_count)
 
@@ -1041,6 +1047,9 @@ extern void lease_get_mtime(struct inode *, struct timespec *time);
 extern int generic_setlease(struct file *, long, struct file_lock **, void **priv);
 extern int vfs_setlease(struct file *, long, struct file_lock **, void **);
 extern int lease_modify(struct file_lock *, int, struct list_head *);
+struct files_struct;
+extern void show_fd_locks(struct seq_file *f,
+                        struct file *filp, struct files_struct *files);
 #else /* !CONFIG_FILE_LOCKING */
 static inline int fcntl_getlk(struct file *file, unsigned int cmd,
                              struct flock __user *user)
@@ -1177,6 +1186,10 @@ static inline int lease_modify(struct file_lock *fl, int arg,
 {
        return -EINVAL;
 }
+
+struct files_struct;
+static inline void show_fd_locks(struct seq_file *f,
+                       struct file *filp, struct files_struct *files) {}
 #endif /* !CONFIG_FILE_LOCKING */
 
 
@@ -2566,7 +2579,7 @@ extern int sb_min_blocksize(struct super_block *, int);
 
 extern int generic_file_mmap(struct file *, struct vm_area_struct *);
 extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *);
-int generic_write_checks(struct file *file, loff_t *pos, size_t *count, int isblk);
+extern ssize_t generic_write_checks(struct kiocb *, struct iov_iter *);
 extern ssize_t generic_file_read_iter(struct kiocb *, struct iov_iter *);
 extern ssize_t __generic_file_write_iter(struct kiocb *, struct iov_iter *);
 extern ssize_t generic_file_write_iter(struct kiocb *, struct iov_iter *);
@@ -2609,12 +2622,13 @@ extern loff_t fixed_size_llseek(struct file *file, loff_t offset,
 extern int generic_file_open(struct inode * inode, struct file * filp);
 extern int nonseekable_open(struct inode * inode, struct file * filp);
 
-ssize_t dax_do_io(int rw, struct kiocb *, struct inode *, struct iov_iter *,
-               loff_t, get_block_t, dio_iodone_t, int flags);
+ssize_t dax_do_io(struct kiocb *, struct inode *, struct iov_iter *, loff_t,
+                 get_block_t, dio_iodone_t, int flags);
 int dax_clear_blocks(struct inode *, sector_t block, long size);
 int dax_zero_page_range(struct inode *, loff_t from, unsigned len, get_block_t);
 int dax_truncate_page(struct inode *, loff_t from, get_block_t);
 int dax_fault(struct vm_area_struct *, struct vm_fault *, get_block_t);
+int dax_pfn_mkwrite(struct vm_area_struct *, struct vm_fault *);
 #define dax_mkwrite(vma, vmf, gb)      dax_fault(vma, vmf, gb)
 
 #ifdef CONFIG_BLOCK
@@ -2634,16 +2648,18 @@ enum {
 
 void dio_end_io(struct bio *bio, int error);
 
-ssize_t __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
-       struct block_device *bdev, struct iov_iter *iter, loff_t offset,
-       get_block_t get_block, dio_iodone_t end_io,
-       dio_submit_t submit_io, int flags);
+ssize_t __blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
+                            struct block_device *bdev, struct iov_iter *iter,
+                            loff_t offset, get_block_t get_block,
+                            dio_iodone_t end_io, dio_submit_t submit_io,
+                            int flags);
 
-static inline ssize_t blockdev_direct_IO(int rw, struct kiocb *iocb,
-               struct inode *inode, struct iov_iter *iter, loff_t offset,
-               get_block_t get_block)
+static inline ssize_t blockdev_direct_IO(struct kiocb *iocb,
+                                        struct inode *inode,
+                                        struct iov_iter *iter, loff_t offset,
+                                        get_block_t get_block)
 {
-       return __blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iter,
+       return __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter,
                                    offset, get_block, NULL, NULL,
                                    DIO_LOCKING | DIO_SKIP_HOLES);
 }
@@ -2679,7 +2695,6 @@ void inode_sub_bytes(struct inode *inode, loff_t bytes);
 loff_t inode_get_bytes(struct inode *inode);
 void inode_set_bytes(struct inode *inode, loff_t bytes);
 
-extern int vfs_readdir(struct file *, filldir_t, void *);
 extern int iterate_dir(struct file *, struct dir_context *);
 
 extern int vfs_stat(const char __user *, struct kstat *);
@@ -2777,6 +2792,16 @@ static inline bool io_is_direct(struct file *filp)
        return (filp->f_flags & O_DIRECT) || IS_DAX(file_inode(filp));
 }
 
+static inline int iocb_flags(struct file *file)
+{
+       int res = 0;
+       if (file->f_flags & O_APPEND)
+               res |= IOCB_APPEND;
+       if (io_is_direct(file))
+               res |= IOCB_DIRECT;
+       return res;
+}
+
 static inline ino_t parent_ino(struct dentry *dentry)
 {
        ino_t res;