Return to jfs_umount.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.

/*
 *   Copyright (C) International Business Machines Corp., 2000-2004
 *
 *   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 of the License, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

/*
 *	jfs_umount.c
 *
 * note: file system in transition to aggregate/fileset:
 * (ref. jfs_mount.c)
 *
 * file system unmount is interpreted as mount of the single/only
 * fileset in the aggregate and, if unmount of the last fileset,
 * as unmount of the aggerate;
 */

#include <linux/fs.h>
#include "jfs_incore.h"
#include "jfs_filsys.h"
#include "jfs_superblock.h"
#include "jfs_dmap.h"
#include "jfs_imap.h"
#include "jfs_metapage.h"
#include "jfs_debug.h"

/*
 * NAME:	jfs_umount(vfsp, flags, crp)
 *
 * FUNCTION:	vfs_umount()
 *
 * PARAMETERS:	vfsp	- virtual file system pointer
 *		flags	- unmount for shutdown
 *		crp	- credential
 *
 * RETURN :	EBUSY	- device has open files
 */
int jfs_umount(struct super_block *sb)
{
	struct jfs_sb_info *sbi = JFS_SBI(sb);
	struct inode *ipbmap = sbi->ipbmap;
	struct inode *ipimap = sbi->ipimap;
	struct inode *ipaimap = sbi->ipaimap;
	struct inode *ipaimap2 = sbi->ipaimap2;
	struct jfs_log *log;
	int rc = 0;

	jfs_info("UnMount JFS: sb:0x%p", sb);

	/*
	 *	update superblock and close log
	 *
	 * if mounted read-write and log based recovery was enabled
	 */
	if ((log = sbi->log))
		/*
		 * Wait for outstanding transactions to be written to log:
		 */
		jfs_flush_journal(log, 2);

	/*
	 * close fileset inode allocation map (aka fileset inode)
	 */
	diUnmount(ipimap, 0);

	diFreeSpecial(ipimap);
	sbi->ipimap = NULL;

	/*
	 * close secondary aggregate inode allocation map
	 */
	ipaimap2 = sbi->ipaimap2;
	if (ipaimap2) {
		diUnmount(ipaimap2, 0);
		diFreeSpecial(ipaimap2);
		sbi->ipaimap2 = NULL;
	}

	/*
	 * close aggregate inode allocation map
	 */
	ipaimap = sbi->ipaimap;
	diUnmount(ipaimap, 0);
	diFreeSpecial(ipaimap);
	sbi->ipaimap = NULL;

	/*
	 * close aggregate block allocation map
	 */
	dbUnmount(ipbmap, 0);

	diFreeSpecial(ipbmap);
	sbi->ipimap = NULL;

	/*
	 * Make sure all metadata makes it to disk before we mark
	 * the superblock as clean
	 */
	filemap_write_and_wait(sbi->direct_inode->i_mapping);

	/*
	 * ensure all file system file pages are propagated to their
	 * home blocks on disk (and their in-memory buffer pages are
	 * invalidated) BEFORE updating file system superblock state
	 * (to signify file system is unmounted cleanly, and thus in
	 * consistent state) and log superblock active file system
	 * list (to signify skip logredo()).
	 */
	if (log) {		/* log = NULL if read-only mount */
		updateSuper(sb, FM_CLEAN);

		/*
		 * close log:
		 *
		 * remove file system from log active file system list.
		 */
		rc = lmLogClose(sb);
	}
	jfs_info("UnMount JFS Complete: rc = %d", rc);
	return rc;
}


int jfs_umount_rw(struct super_block *sb)
{
	struct jfs_sb_info *sbi = JFS_SBI(sb);
	struct jfs_log *log = sbi->log;

	if (!log)
		return 0;

	/*
	 * close log:
	 *
	 * remove file system from log active file system list.
	 */
	jfs_flush_journal(log, 2);

	/*
	 * Make sure all metadata makes it to disk
	 */
	dbSync(sbi->ipbmap);
	diSync(sbi->ipimap);

	/*
	 * Note that we have to do this even if sync_blockdev() will
	 * do exactly the same a few instructions later:  We can't
	 * mark the superblock clean before everything is flushed to
	 * disk.
	 */
	filemap_write_and_wait(sbi->direct_inode->i_mapping);

	updateSuper(sb, FM_CLEAN);

	return lmLogClose(sb);
}