Hi Jens,
Can you please have a glance on this patch series, given than attempt is
to extend the original architecture of write-hints.
Thanks,
On Thursday 24 January 2019 01:59 PM, Jan Kara wrote:
Hello,
On Wed 09-01-19 21:00:57, Kanchan Joshi wrote:
Towards supporing write-hints/streams for filesystem journal.
Here is the v1 patch for background -
https://marc.info/?l=linux-fsdevel&m=154444637519020&w=2
Changes since v1:
- introduce four more hints for in-kernel use, as recommended by Dave chinner
& Jens axboe. This isolates kernel-mode hints from user-mode ones.
- remove mount-option to specify write-hint, as recommended by Jan kara &
Dave chinner. Rather, FS always sets write-hint for journal. This gets ignored
if device does not support stream.
- Removed code-redundancy for write_dirty_buffer (Jan kara's review comment)
I guess the series should also go to Jens since he was the original author
of write-hint support so he has the best idea about the architecture.
Honza
Kanchan Joshi (4):
block: Increase count of supported write-hints
fs: introduce four macros for in-kernel hints
fs: introduce APIs to enable sending write-hint with buffer-head
fs/ext4,jbd2: add support for passing write-hint with journal.
fs/buffer.c | 18 ++++++++++++++++--
fs/ext4/super.c | 2 ++
fs/jbd2/commit.c | 11 +++++++----
fs/jbd2/journal.c | 3 ++-
fs/jbd2/revoke.c | 3 ++-
include/linux/blkdev.h | 5 ++++-
include/linux/buffer_head.h | 3 +++
include/linux/fs.h | 5 +++++
include/linux/jbd2.h | 8 ++++++++
9 files changed, 49 insertions(+), 9 deletions(-)
--
2.7.4
