fs: fold __generic_write_end back into generic_write_end

}

EXPORT_SYMBOL(block_write_begin);

void __generic_write_end(struct inode *inode, loff_t pos, unsigned copied,

		struct page *page)

{

	loff_t old_size = inode->i_size;

	bool i_size_changed = false;

	/*

	 * No need to use i_size_read() here, the i_size cannot change under us

	 * because we hold i_rwsem.

	 *

	 * But it's important to update i_size while still holding page lock:

	 * page writeout could otherwise come in and zero beyond i_size.

	 */

	if (pos + copied > inode->i_size) {

		i_size_write(inode, pos + copied);

		i_size_changed = true;

	}

	unlock_page(page);

	if (old_size < pos)

		pagecache_isize_extended(inode, old_size, pos);

	/*

	 * Don't mark the inode dirty under page lock. First, it unnecessarily

	 * makes the holding time of page lock longer. Second, it forces lock

	 * ordering of page lock and transaction start for journaling

	 * filesystems.

	 */

	if (i_size_changed)

		mark_inode_dirty(inode);

}

int block_write_end(struct file *file, struct address_space *mapping,

			loff_t pos, unsigned len, unsigned copied,

			struct page *page, void *fsdata)

			loff_t pos, unsigned len, unsigned copied,

			struct page *page, void *fsdata)

{

	struct inode *inode = mapping->host;

	loff_t old_size = inode->i_size;

	bool i_size_changed = false;

	copied = block_write_end(file, mapping, pos, len, copied, page, fsdata);

	__generic_write_end(mapping->host, pos, copied, page);

	/*

	 * No need to use i_size_read() here, the i_size cannot change under us

	 * because we hold i_rwsem.

	 *

	 * But it's important to update i_size while still holding page lock:

	 * page writeout could otherwise come in and zero beyond i_size.

	 */

	if (pos + copied > inode->i_size) {

		i_size_write(inode, pos + copied);

		i_size_changed = true;

	}

	unlock_page(page);

	put_page(page);

	if (old_size < pos)

		pagecache_isize_extended(inode, old_size, pos);

	/*

	 * Don't mark the inode dirty under page lock. First, it unnecessarily

	 * makes the holding time of page lock longer. Second, it forces lock

	 * ordering of page lock and transaction start for journaling

	 * filesystems.

	 */

	if (i_size_changed)

		mark_inode_dirty(inode);

	return copied;

}

EXPORT_SYMBOL(generic_write_end);

extern void guard_bio_eod(int rw, struct bio *bio);

extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,

		get_block_t *get_block, struct iomap *iomap);

void __generic_write_end(struct inode *inode, loff_t pos, unsigned copied,

		struct page *page);

/*

 * char_dev.c