Return to spu_syscalls.c CVS log

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Update 2.6.x-xfs to 2.6.23-rc4.

Also update fs/xfs with external mainline changes.
There were 12 such missing commits that I detected:

--------
commit ad690ef9e690f6c31f7d310b09ef1314bcec9033
Author: Al Viro <viro@ftp.linux.org.uk>
    xfs ioctl __user annotations

commit 20c2df83d25c6a95affe6157a4c9cac4cf5ffaac
Author: Paul Mundt <lethal@linux-sh.org>
    mm: Remove slab destructors from kmem_cache_create().

commit d0217ac04ca6591841e5665f518e38064f4e65bd
Author: Nick Piggin <npiggin@suse.de>
    mm: fault feedback #1

commit 54cb8821de07f2ffcd28c380ce9b93d5784b40d7
Author: Nick Piggin <npiggin@suse.de>
    mm: merge populate and nopage into fault (fixes nonlinear)

commit d00806b183152af6d24f46f0c33f14162ca1262a
Author: Nick Piggin <npiggin@suse.de>
    mm: fix fault vs invalidate race for linear mappings

commit a569425512253992cc64ebf8b6d00a62f986db3e
Author: Christoph Hellwig <hch@infradead.org>
    knfsd: exportfs: add exportfs.h header

commit 831441862956fffa17b9801db37e6ea1650b0f69
Author: Rafael J. Wysocki <rjw@sisk.pl>
    Freezer: make kernel threads nonfreezable by default

commit 8e1f936b73150f5095448a0fee6d4f30a1f9001d
Author: Rusty Russell <rusty@rustcorp.com.au>
    mm: clean up and kernelify shrinker registration

commit 5ffc4ef45b3b0a57872f631b4e4ceb8ace0d7496
Author: Jens Axboe <jens.axboe@oracle.com>
    sendfile: remove .sendfile from filesystems that use generic_file_sendfile()

commit 8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d
Author: Rafael J. Wysocki <rjw@sisk.pl>
    Add suspend-related notifications for CPU hotplug

commit 59c51591a0ac7568824f541f57de967e88adaa07
Author: Michael Opdenacker <michael@free-electrons.com>
    Fix occurrences of "the the "

commit 0ceb331433e8aad9c5f441a965d7c681f8b9046f
Author: Dmitriy Monakhov <dmonakhov@openvz.org>
    mm: move common segment checks to separate helper function
--------
Merge of 2.6.x-xfs-melb:linux:29656b by kenmcd.

/*
 * SPU file system -- system call stubs
 *
 * (C) Copyright IBM Deutschland Entwicklung GmbH 2005
 *
 * Author: Arnd Bergmann <arndb@de.ibm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#include <linux/file.h>
#include <linux/module.h>
#include <linux/syscalls.h>

#include <asm/spu.h>

struct spufs_calls spufs_calls = {
	.owner = NULL,
};

/* These stub syscalls are needed to have the actual implementation
 * within a loadable module. When spufs is built into the kernel,
 * this file is not used and the syscalls directly enter the fs code */

asmlinkage long sys_spu_create(const char __user *name,
		unsigned int flags, mode_t mode, int neighbor_fd)
{
	long ret;
	struct module *owner = spufs_calls.owner;
	struct file *neighbor;
	int fput_needed;

	ret = -ENOSYS;
	if (owner && try_module_get(owner)) {
		if (flags & SPU_CREATE_AFFINITY_SPU) {
			neighbor = fget_light(neighbor_fd, &fput_needed);
			ret = -EBADF;
			if (neighbor) {
				ret = spufs_calls.create_thread(name, flags,
								mode, neighbor);
				fput_light(neighbor, fput_needed);
			}
		}
		else {
			ret = spufs_calls.create_thread(name, flags,
							mode, NULL);
		}
		module_put(owner);
	}
	return ret;
}

asmlinkage long sys_spu_run(int fd, __u32 __user *unpc, __u32 __user *ustatus)
{
	long ret;
	struct file *filp;
	int fput_needed;
	struct module *owner = spufs_calls.owner;

	ret = -ENOSYS;
	if (owner && try_module_get(owner)) {
		ret = -EBADF;
		filp = fget_light(fd, &fput_needed);
		if (filp) {
			ret = spufs_calls.spu_run(filp, unpc, ustatus);
			fput_light(filp, fput_needed);
		}
		module_put(owner);
	}
	return ret;
}

int register_spu_syscalls(struct spufs_calls *calls)
{
	if (spufs_calls.owner)
		return -EBUSY;

	spufs_calls.create_thread = calls->create_thread;
	spufs_calls.spu_run = calls->spu_run;
	smp_mb();
	spufs_calls.owner = calls->owner;
	return 0;
}
EXPORT_SYMBOL_GPL(register_spu_syscalls);

void unregister_spu_syscalls(struct spufs_calls *calls)
{
	BUG_ON(spufs_calls.owner != calls->owner);
	spufs_calls.owner = NULL;
}
EXPORT_SYMBOL_GPL(unregister_spu_syscalls);