From: Theodore Ts'o <tytso@mit.edu>
To: Ext4 Developers List <linux-ext4@vger.kernel.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Subject: [PATCH 0/6] ext4: rewrite I/O submission paths to use bio's directly
Date: Fri, 22 Oct 2010 11:29:20 -0400 [thread overview]
Message-ID: <1287761366-20249-1-git-send-email-tytso@mit.edu> (raw)
This is the first draft of the patches that rewrite ext4's I/O
submission paths to use the block I/O layer directly instead of using
the buffer layer. This reduces lock contention on the block queue
submission layers, and it should reduce CPU usage significantly.
There is still some cleanup and testing to be done, but this should be
good enough for benchmarking purposes. This patch series survives
xfstests with 4k blocks, and minimal testing with 1k blocks.
- Ted
Theodore Ts'o (6):
ext4: call mpage_da_submit_io() from mpage_da_map_blocks()
ext4: simplify ext4_writepage()
ext4: inline ext4_writepage() into mpage_da_submit_io()
ext4: inline walk_page_buffers() into mpage_da_submit_io
ext4: move mpage_put_bnr_to_bhs()'s functionality to
mpage_da_submit_io()
ext4: use bio layer instead of buffer layer in mpage_da_submit_io
fs/ext4/Makefile | 2 +-
fs/ext4/ext4.h | 33 ++++-
fs/ext4/extents.c | 4 +-
fs/ext4/inode.c | 429 +++++++++++++++++++----------------------------------
fs/ext4/page-io.c | 363 ++++++++++++++++++++++++++++++++++++++++++++
fs/ext4/super.c | 8 +-
6 files changed, 555 insertions(+), 284 deletions(-)
create mode 100644 fs/ext4/page-io.c
next reply other threads:[~2010-10-22 15:29 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-22 15:29 Theodore Ts'o [this message]
2010-10-22 15:29 ` [PATCH 1/6] ext4: call mpage_da_submit_io() from mpage_da_map_blocks() Theodore Ts'o
2010-10-22 18:29 ` Andreas Dilger
2010-10-22 15:29 ` [PATCH 2/6] ext4: simplify ext4_writepage() Theodore Ts'o
2010-10-22 15:29 ` [PATCH 3/6] ext4: inline ext4_writepage() into mpage_da_submit_io() Theodore Ts'o
2010-10-22 15:29 ` [PATCH 4/6] ext4: inline walk_page_buffers() into mpage_da_submit_io Theodore Ts'o
2010-10-22 15:29 ` [PATCH 5/6] ext4: move mpage_put_bnr_to_bhs()'s functionality to mpage_da_submit_io() Theodore Ts'o
2010-10-22 15:29 ` [PATCH 6/6] ext4: use bio layer instead of buffer layer in mpage_da_submit_io Theodore Ts'o
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1287761366-20249-1-git-send-email-tytso@mit.edu \
--to=tytso@mit.edu \
--cc=linux-ext4@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).