Contributors: 14
Author Tokens Token Proportion Commits Commit Proportion
Kirill A. Shutemov 54 42.52% 1 4.55%
Linus Torvalds (pre-git) 16 12.60% 4 18.18%
David Howells 15 11.81% 2 9.09%
OGAWA Hirofumi 8 6.30% 2 9.09%
Adrian Bunk 6 4.72% 1 4.55%
Nicholas Piggin 5 3.94% 1 4.55%
Al Viro 5 3.94% 3 13.64%
Art Haas 5 3.94% 1 4.55%
Octavian Purdila 4 3.15% 1 4.55%
Dimitri Gorokhovik 3 2.36% 1 4.55%
Arjan van de Ven 2 1.57% 2 9.09%
Badari Pulavarty 2 1.57% 1 4.55%
Jens Axboe 1 0.79% 1 4.55%
Christoph Hellwig 1 0.79% 1 4.55%
Total 127 22


/* file-mmu.c: ramfs MMU-based file operations
 *
 * Resizable simple ram filesystem for Linux.
 *
 * Copyright (C) 2000 Linus Torvalds.
 *               2000 Transmeta Corp.
 *
 * Usage limits added by David Gibson, Linuxcare Australia.
 * This file is released under the GPL.
 */

/*
 * NOTE! This filesystem is probably most useful
 * not as a real filesystem, but as an example of
 * how virtual filesystems can be written.
 *
 * It doesn't get much simpler than this. Consider
 * that this file implements the full semantics of
 * a POSIX-compliant read-write filesystem.
 *
 * Note in particular how the filesystem does not
 * need to implement any data structures of its own
 * to keep track of the virtual data: using the VFS
 * caches is sufficient.
 */

#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/ramfs.h>
#include <linux/sched.h>

#include "internal.h"

static unsigned long ramfs_mmu_get_unmapped_area(struct file *file,
		unsigned long addr, unsigned long len, unsigned long pgoff,
		unsigned long flags)
{
	return current->mm->get_unmapped_area(file, addr, len, pgoff, flags);
}

const struct file_operations ramfs_file_operations = {
	.read_iter	= generic_file_read_iter,
	.write_iter	= generic_file_write_iter,
	.mmap		= generic_file_mmap,
	.fsync		= noop_fsync,
	.splice_read	= filemap_splice_read,
	.splice_write	= iter_file_splice_write,
	.llseek		= generic_file_llseek,
	.get_unmapped_area	= ramfs_mmu_get_unmapped_area,
};

const struct inode_operations ramfs_file_inode_operations = {
	.setattr	= simple_setattr,
	.getattr	= simple_getattr,
};