The original intent of this series was to add a per-inode DAX flag to ext4 so that it would be consistent with XFS. In my travels I found and fixed several related issues in both ext4 and XFS. I'm not fully happy with the ways that ext4 DAX interacts with conflicting features (journaling, inline data and encryption). My goal with this series was to make all these interactions as consistent as possilble, and of course to make them safe. If anyone has ideas for improvements, I'm very open. Ross Zwisler (9): ext4: remove duplicate extended attributes defs xfs: always use DAX if mount option is used xfs: validate bdev support for DAX inode flag ext4: add ext4_should_use_dax() ext4: ext4_change_inode_journal_flag error handling ext4: safely transition S_DAX on journaling changes ext4: prevent data corruption with inline data + DAX ext4: add sanity check for encryption + DAX ext4: add per-inode DAX flag fs/ext4/ext4.h | 47 ++++++--------------------------------------- fs/ext4/ext4_jbd2.h | 16 ++++++++++++++++ fs/ext4/inline.c | 10 ---------- fs/ext4/inode.c | 45 ++++++++++++++++++++++++------------------- fs/ext4/ioctl.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++-- fs/ext4/super.c | 8 ++++++++ fs/xfs/xfs_ioctl.c | 14 +++++++++++--- 7 files changed, 119 insertions(+), 76 deletions(-) -- 2.9.5
