64 	struct xfile		*xf;  in xfile_create()  local
67 	xf = kmalloc(sizeof(struct xfile), XCHK_GFP_FLAGS);  in xfile_create()
68 	if (!xf)  in xfile_create()
71 	xf->file = shmem_file_setup(description, isize, 0);  in xfile_create()
72 	if (!xf->file)  in xfile_create()
74 	if (IS_ERR(xf->file)) {  in xfile_create()
75 		error = PTR_ERR(xf->file);  in xfile_create()
86 	xf->file->f_mode |= FMODE_PREAD | FMODE_PWRITE | FMODE_NOCMTIME |  in xfile_create()
88 	xf->file->f_flags |= O_RDWR | O_LARGEFILE | O_NOATIME;  in xfile_create()
89 	inode = file_inode(xf->file);  in xfile_create()
97 	trace_xfile_create(xf);  in xfile_create()
99 	*xfilep = xf;  in xfile_create()
100 	return 0;  in xfile_create()
102 	kfree(xf);  in xfile_create()
109 	struct xfile		*xf)  in xfile_destroy()  argument
111 	struct inode		*inode = file_inode(xf->file);  in xfile_destroy()
113 	trace_xfile_destroy(xf);  in xfile_destroy()
116 	fput(xf->file);  in xfile_destroy()
117 	kfree(xf);  in xfile_destroy()
128 	struct xfile		*xf,  in xfile_pread()  argument
133 	struct inode		*inode = file_inode(xf->file);  in xfile_pread()
136 	ssize_t			read = 0;  in xfile_pread()
138 	int			error = 0;  in xfile_pread()
145 	trace_xfile_pread(xf, pos, count);  in xfile_pread()
148 	while (count > 0) {  in xfile_pread()
166 			memset(buf, 0, len);  in xfile_pread()
180 			memset(buf, 0, len);  in xfile_pread()
192 	if (read > 0)  in xfile_pread()
205 	struct xfile		*xf,  in xfile_pwrite()  argument
210 	struct inode		*inode = file_inode(xf->file);  in xfile_pwrite()
214 	ssize_t			written = 0;  in xfile_pwrite()
216 	int			error = 0;  in xfile_pwrite()
223 	trace_xfile_pwrite(xf, pos, count);  in xfile_pwrite()
226 	while (count > 0) {  in xfile_pwrite()
252 			memset(kaddr, 0, PAGE_SIZE);  in xfile_pwrite()
261 		if (ret < 0) {  in xfile_pwrite()
276 	if (written > 0)  in xfile_pwrite()
284 	struct xfile		*xf,  in xfile_seek_data()  argument
289 	ret = vfs_llseek(xf->file, pos, SEEK_DATA);  in xfile_seek_data()
290 	trace_xfile_seek_data(xf, pos, ret);  in xfile_seek_data()
297 	struct xfile		*xf,  in xfile_stat()  argument
303 	error = vfs_getattr_nosec(&xf->file->f_path, &ks,  in xfile_stat()
310 	return 0;  in xfile_stat()
315  * boundary.  Returns 0 (and a locked page) if successful, -ENOTBLK if we
320 	struct xfile		*xf,  in xfile_get_page()  argument
325 	struct inode		*inode = file_inode(xf->file);  in xfile_get_page()
339 	trace_xfile_get_page(xf, pos, len);  in xfile_get_page()
366 		memset(kaddr, 0, PAGE_SIZE);  in xfile_get_page()
389  * Release the (locked) page for a memory object.  Returns 0 or a negative
394 	struct xfile		*xf,  in xfile_put_page()  argument
397 	struct inode		*inode = file_inode(xf->file);  in xfile_put_page()
403 	trace_xfile_put_page(xf, xfpage->pos, PAGE_SIZE);  in xfile_put_page()
412 	memset(xfpage, 0, sizeof(struct xfile_page));  in xfile_put_page()
414 	if (ret < 0)  in xfile_put_page()
418 	return 0;  in xfile_put_page()