diff options
| -rw-r--r-- | fs/ext3/Kconfig | 19 | ||||
| -rw-r--r-- | fs/ext3/super.c | 8 |
2 files changed, 26 insertions, 1 deletions
diff --git a/fs/ext3/Kconfig b/fs/ext3/Kconfig index 8e0cfe44b0fc..fb3c1a21b135 100644 --- a/fs/ext3/Kconfig +++ b/fs/ext3/Kconfig @@ -28,6 +28,25 @@ config EXT3_FS 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 diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 9e5b8e387e1e..599dbfe504c3 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -44,6 +44,12 @@ #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 *, @@ -1919,7 +1925,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent) 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; |