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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-06 17:16:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-06 17:16:47 -0700 |
| commit | bbae8bcc49bc4d002221dab52c79a50a82e7cd1f (patch) | |
| tree | 7144a78d9f734734e977cef45c012a1cd4e98008 /fs/ext3/super.c | |
| parent | e0724bf6e4a1f2e678d2b2aab01cae22e17862f0 (diff) | |
| download | lwn-bbae8bcc49bc4d002221dab52c79a50a82e7cd1f.tar.gz lwn-bbae8bcc49bc4d002221dab52c79a50a82e7cd1f.zip | |
ext3: make default data ordering mode configurable
This makes the defautl ext3 data ordering mode (when no explicit
ordering is set) configurable, so as to allow people to default to
'data=writeback' and get the resulting latency improvements.
This is a non-issue if a filesystem has been explicitly set to some
ordering (with 'tune2fs').
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext3/super.c')
| -rw-r--r-- | fs/ext3/super.c | 8 |
1 files changed, 7 insertions, 1 deletions
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; |