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Date: Thu, 25 Oct 2012 23:08:52 +0800
From: zwu.kernel@...il.com
To: linux-fsdevel@...r.kernel.org
Cc: linux-ext4@...r.kernel.org, linux-btrfs@...r.kernel.org,
linux-kernel@...r.kernel.org, linuxram@...ux.vnet.ibm.com,
viro@...iv.linux.org.uk, david@...morbit.com, tytso@....edu,
cmm@...ibm.com, Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
Subject: [RFC v4 00/15] vfs: hot data tracking
From: Zhi Yong Wu <wuzhy@...ux.vnet.ibm.com>
NOTE:
The patchset can be obtained via my kernel dev git on github:
git@...hub.com:wuzhy/kernel.git hot_tracking
If you're interested, you can also can review them via
https://github.com/wuzhy/kernel/commits/hot_tracking
For more infomation, please check hot_tracking.txt in Documentation
TODO List:
1.) Need to do scalability or performance tests.
2.) How to save the file temperature among the umount to be able to
preserve the file tempreture after reboot
Ben Chociej, Matt Lupfer and Conor Scott originally wrote this code to
be very btrfs-specific. I've taken their code and attempted to
make it more generic and integrate it at the VFS level.
Changelog from v3:
1.) Rewritten debugfs support based seq_file operation. [Dave Chinner]
2.) Refactored workqueue support. [Dave Chinner]
3.) Turn some Micro into be tunable [Zhiyong, Liu Zheng]
TIME_TO_KICK, and HEAT_UPDATE_DELAY
4.) Cleanedup a lot of other issues [Dave Chinner]
v2:
1.) Converted to Radix trees, not RB-tree [Zhiyong, Dave Chinner]
2.) Added memory shrinker [Dave Chinner]
3.) Converted to one workqueue to update map info periodically [Dave Chinner]
4.) Cleanedup a lot of other issues [Dave Chinner]
v1:
1.) Reduce new files and put all in fs/hot_tracking.[ch] [Dave Chinner]
2.) The first three patches can probably just be flattened into one.
[Marco Stornelli , Dave Chinner]
Dave Chinner (1):
xfs: add hot tracking support
Zhi Yong Wu (14):
vfs,hot_track: introduce private radix tree structures
vfs,hot_track: initialize and free key data structures
vfs,hot_track: add the function for collecting I/O frequency
vfs,hot_track: add two map arrays
vfs,hot_track: add hooks to enable hot data tracking
vfs,hot_track: add the function for updating map arrays
vfs,hot_track: add the aging function
vfs,hot_track: add one work queue
vfs,hot_track: register one memory shrinker
vfs,hot_track: add one new ioctl interface
vfs,hot_track: add debugfs support
vfs,hot_track: turn some Micro into be tunable
btrfs: add hot tracking support
vfs,hot_track: add the documentation
Documentation/filesystems/00-INDEX | 2 +
Documentation/filesystems/hot_tracking.txt | 164 ++++
fs/Makefile | 2 +-
fs/btrfs/ctree.h | 1 +
fs/btrfs/super.c | 22 +-
fs/compat_ioctl.c | 5 +
fs/dcache.c | 2 +
fs/debugfs/inode.c | 26 +
fs/direct-io.c | 6 +
fs/hot_tracking.c | 1308 ++++++++++++++++++++++++++++
fs/hot_tracking.h | 91 ++
fs/ioctl.c | 76 ++
fs/xfs/xfs_mount.h | 1 +
fs/xfs/xfs_super.c | 16 +
include/linux/debugfs.h | 9 +
include/linux/fs.h | 4 +
include/linux/hot_tracking.h | 125 +++
kernel/sysctl.c | 14 +
mm/filemap.c | 6 +
mm/page-writeback.c | 12 +
mm/readahead.c | 6 +
21 files changed, 1896 insertions(+), 2 deletions(-)
create mode 100644 Documentation/filesystems/hot_tracking.txt
create mode 100644 fs/hot_tracking.c
create mode 100644 fs/hot_tracking.h
create mode 100644 include/linux/hot_tracking.h
--
1.7.6.5
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