Exemplo n.º 1
0
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, 1);

	/*
	 * 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);
}
Exemplo n.º 2
0
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);
	fsync_inode_data_buffers(sb->s_bdev->bd_inode);

	updateSuper(sb, FM_CLEAN);
	sbi->log = NULL;

	return lmLogClose(sb, log);
}
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;

	jfs_flush_journal(log, 2);

	dbSync(sbi->ipbmap);
	diSync(sbi->ipimap);

	filemap_write_and_wait(sbi->direct_inode->i_mapping);

	updateSuper(sb, FM_CLEAN);

	return lmLogClose(sb);
}
Exemplo n.º 4
0
/*
 * NAME:        jfs_defragfs()
 *
 * FUNCTION:    relocate specified extent for defragfs()
 *              optionally commiting the operation.
 */
int32 jfs_defragfs(
	char	*pData,		/* pointer to buffer containing plist */ 
	uint32	lenData,	/* length of buffer */
	uint16	*pbufsize)	/* pointer of buffer length */ 
{
	int32	rc = 0;
	defragfs_t	pList, *p = &pList;
	uint32	xtype;
	int64	offset, xoff, oxaddr, nxaddr;
	int32	xlen;
	inode_t	*ipmnt, *ipimap, *ipbmap;
	inode_t	*ip = NULL;
	xad_t	oxad;
	pxd_t	opxd;
        mode_t	imode;
        int32	tid;
        inode_t	*iplist[1];
	struct vfs *vfsp;

	if (rc = KernCopyIn(&pList, pData, lenData))
		return rc;

	/* get the 'mount' inode */
        for (vfsp = vfs_anchor; vfsp != NULL; vfsp = vfsp->vfs_next)
		if (vfsp->vfs_vpfsi->vpi_drive == pList.dev)
			break;
	if (vfsp == NULL)
		return EINVAL;

	xtype = pList.flag;

	/* sync at start of defragfs ? */
	if (xtype & DEFRAGFS_SYNC)
	{
jEVENT(0,("jfs_defragfs: DEFRAGFS_SYNC\n"));

		if ((vfsp->vfs_flag & VFS_READONLY) ||
		    (vfsp->vfs_flag & VFS_ACCEPT))
			return 0;

		ipimap = (inode_t *)vfsp->vfs_data;
		ipmnt = ipimap->i_ipmnt;
		ipbmap = ipmnt->i_ipbmap;

		/* sync the file system */
		iSyncFS(vfsp);

		/* write dirty pages of imap */
		diSync(ipimap);

		/* write dirty pages of bmap */
		dbSync(ipbmap);

		return 0;
	}
	else if (!(xtype & DEFRAGFS_RELOCATE))
		return EINVAL;

	if (vfsp->vfs_flag & VFS_READONLY)
		return EROFS;

	if (vfsp->vfs_flag & VFS_ACCEPT)
		return EINVAL;

	/* get the relocation parameter */
        xoff = pList.xoff;
        oxaddr = pList.old_xaddr;
        nxaddr = pList.new_xaddr;
        xlen = pList.xlen;

jEVENT(0,("jfs_defragfs: i:%d xtype:0x%08x xoff:%lld xlen:%d xaddr:%lld:%lld\n",
	pList.ino, xtype, xoff, xlen, oxaddr, nxaddr));

	/* get the object inode if it exist */
	ICACHE_LOCK();
	rc = iget(vfsp, pList.ino, &ip, 0);
	ICACHE_UNLOCK();
	if(rc)
        {
jEVENT(0,("jfs_defragfs: stale target object.\n"));
		rc = ESTALE;  /* stale object ENOENT */
		goto out1;
        }

	IWRITE_LOCK(ip);
	
	/* validate inode */
	if (ip->i_nlink == 0  
	|| ip->i_gen != pList.gen
	|| ip->i_fileset != pList.fileset
	|| ip->i_inostamp != pList.inostamp)
	{
jEVENT(0,("jfs_defragfs: stale target object.\n"));
		rc = ESTALE;  /* stale object ENOENT */
		goto out1;
	}
	
	/* validate object type: regular file or directory */
	imode = ip->i_mode & IFMT;
	switch(imode)
	{
	case IFREG:
	case IFDIR:
		break;
	default:
		rc = ESTALE;	/* invalid object type ENOENT */
		goto out1;
	}

	/*
	 * try to allocate new destination extent
	 */
	if (rc = dbAllocExact(ip, nxaddr, xlen))
        {
jEVENT(0,("jfs_defragfs: stale destination extent.\n"));
		rc = ENOSPC;
		goto out1;
        }

	iBindCache(ip);

	/*
	 *	regular file: 
         */
	if (imode == IFREG)
	{
		/*
		 * automatic commit before and after each relocation 
		 * may be skipped after more experience;
		 */
		/*
		 * commit any update before relocation
		 */
		if (ip->i_flag & IUPD)
		{
			ip->i_flag |= IFSYNC;

			txBegin(ip->i_ipmnt, &tid, 0);
			iplist[0] = ip;
			rc = txCommit(tid, 1, &iplist[0], 0);
			if (rc)
				goto out2;
			txEnd(tid);
		}

		/*
		 *	relocate either xtpage or data extent
		 */
		txBegin(ip->i_ipmnt, &tid, 0);

		/* source extent xad */
		XADoffset(&oxad, xoff);
		XADaddress(&oxad, oxaddr);
		XADlength(&oxad, xlen);

		rc = xtRelocate(tid, ip, &oxad, nxaddr, xtype);
		if (rc)
			goto out2;

		iplist[0] = ip;
		rc = txCommit(tid, 1, &iplist[0], 0);
		if (rc)
			goto out2;

		txEnd(tid);
		goto out1;
	}
	/*
	 *	directory:
	 */
	else  /* IFDIR */
	{
		/*
		 *	relocate dtpage
		 */
		txBegin(ip->i_ipmnt, &tid, 0);

		/* source extent pxd */
		PXDaddress(&opxd, oxaddr);
		PXDlength(&opxd, xlen);
	
		rc = dtRelocate(tid, ip, xoff, &opxd, nxaddr); 
		if (rc)
			goto out2;

		iplist[0] = ip;
		rc = txCommit(tid, 1, &iplist[0], 0);
		if (rc)
			goto out2;

		txEnd(tid);
		goto out1;
	}

out2:
	dbFree(ip, nxaddr, xlen) ;

out1:
	if (ip)
	{
		IWRITE_UNLOCK(ip);

		ICACHE_LOCK();
		iput(ip, NULL);
		ICACHE_UNLOCK();
	}

jEVENT(0,("jfs_defragfs: rc=%d\n", rc));
	return (rc);
}