| From: |
| Christoph Hellwig <hch-AT-lst.de> |
| To: |
| Chris Mason <clm-AT-fb.com>, Josef Bacik <josef-AT-toxicpanda.com>, David Sterba <dsterba-AT-suse.com> |
| Subject: |
| simplify extent_buffer reading and writing v2 |
| Date: |
| Tue, 14 Mar 2023 07:16:34 +0100 |
| Message-ID: |
| <20230314061655.245340-1-hch@lst.de> |
| Cc: |
| linux-btrfs-AT-vger.kernel.org |
| Archive-link: |
| Article |
Hi all,
currently reading and writing of extent_buffers is very complicated as it
tries to work in a page oriented way. Switch as much as possible to work
based on the extent_buffer object to simplify the code.
I suspect in the long run switching to dedicated object based writeback
and reclaim similar to the XFS buffer cache would be a good idea, but as
that involves pretty big behavior changes that's better left for a
separate series.
Changes since v1:
- fix a pre-existing bug clearing the uptodate bit for subpage eb
write errors
- clean up extent_buffer_write_end_io a bit more
Diffstat:
compression.c | 4
compression.h | 2
disk-io.c | 276 +++-----------------------
disk-io.h | 5
extent_io.c | 605 ++++++++++++++--------------------------------------------
extent_io.h | 3
6 files changed, 197 insertions(+), 698 deletions(-)
