ext3: make default data ordering mode configurable

	  To compile this file system support as a module, choose M here: the

	  module will be called ext3.

config EXT3_DEFAULTS_TO_ORDERED

	bool "Default to 'data=ordered' in ext3 (legacy option)"

	depends on EXT3_FS

	help

	  If a filesystem does not explicitly specify a data ordering

	  mode, and the journal capability allowed it, ext3 used to

	  historically default to 'data=ordered'.

	  That was a rather unfortunate choice, because it leads to all

	  kinds of latency problems, and the 'data=writeback' mode is more

	  appropriate these days.

	  You should probably always answer 'n' here, and if you really

	  want to use 'data=ordered' mode, set it in the filesystem itself

	  with 'tune2fs -o journal_data_ordered'.

	  But if you really want to enable the legacy default, you can do

	  so by answering 'y' to this question.

config EXT3_FS_XATTR

	bool "Ext3 extended attributes"

	depends on EXT3_FS

#include "acl.h"

#include "namei.h"

#ifdef CONFIG_EXT3_DEFAULTS_TO_ORDERED

  #define EXT3_MOUNT_DEFAULT_DATA_MODE EXT3_MOUNT_ORDERED_DATA

#else

  #define EXT3_MOUNT_DEFAULT_DATA_MODE EXT3_MOUNT_WRITEBACK_DATA

#endif

static int ext3_load_journal(struct super_block *, struct ext3_super_block *,

			     unsigned long journal_devnum);

static int ext3_create_journal(struct super_block *, struct ext3_super_block *,

                   cope, else JOURNAL_DATA */

		if (journal_check_available_features

		    (sbi->s_journal, 0, 0, JFS_FEATURE_INCOMPAT_REVOKE))

			set_opt(sbi->s_mount_opt, ORDERED_DATA);

			set_opt(sbi->s_mount_opt, DEFAULT_DATA_MODE);

		else

			set_opt(sbi->s_mount_opt, JOURNAL_DATA);

		break;