From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/ext4/extents.c |2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 7011ac9..43ec639 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2156,7 +2156,6 @@ ext4_ext_in_cach
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/btrfs/file-item.c | 7 ++-
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index ec16020..1ba85b4 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -356,11 +356,8 @@ i
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/btrfs/tree-log.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 451fad9..83d4e1d 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -3614,8 +3614,6 @@ static int btrfs_log_inode(
From: Zhi Yong Wu
In "[ \fB\-f\fP\fI ]", the "\fI" will result in the front half "["of
"[ -f ]" doesn't the back half "]"; When you issue the command
"man mkfs.btrfs", you will see the difference.
Signed-off-by: Zhi Yong Wu
---
man/mkfs.btrfs.8.in | 2 +-
1 file changed, 1 insertion(+), 1 de
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
man/btrfs.8.in | 37 +
1 file changed, 37 insertions(+)
diff --git a/man/btrfs.8.in b/man/btrfs.8.in
index 94f4ffe..54de60e 100644
--- a/man/btrfs.8.in
+++ b/man/btrfs.8.in
@@ -60,6 +60,18 @@ btrfs \- control
From: Zhi Yong Wu
One root structure hot_info is defined, is hooked
up in super_block, and will be used to hold rb trees
root, hash list root and some other information, etc.
Signed-off-by: Zhi Yong Wu
---
include/linux/fs.h|4
include/linux/hot_track.h | 26 +
From: Zhi Yong Wu
Add some utils helpers to update access frequencies
for one file or its range.
Signed-off-by: Zhi Yong Wu
---
fs/hot_rb.c | 359 +++
fs/hot_rb.h | 28 +
2 files changed, 387 insertions(+), 0 deletions(-)
diff -
From: Zhi Yong Wu
Adds hot_inode_tree struct to keep track of
frequently accessed files, and be keyed by {inode, offset}.
Trees contain hot_inode_items representing those files
and ranges.
Having these trees means that vfs can quickly determine the
temperature of some data by doing some calcu
From: Zhi Yong Wu
Introduce one new mount option '-o hottrack',
and add its parsing support.
Its usage looks like:
mount -o hottrack
mount -o nouser,hottrack
mount -o nouser,hottrack,loop
mount -o hottrack,nouser
Signed-off-by: Zhi Yong Wu
---
fs/hot_track.c| 34 +
From: Zhi Yong Wu
HI, folks
I have pushed the patchset to my kernel dev git tree:
g...@github.com:wuzhy/kernel.git
Also, you can review it via
https://github.com/wuzhy/kernel/commits/hottrack
NOTE:
The patchset still has a lot of bugfix and cleanup to do. It is post
out mainly to make sure
From: Zhi Yong Wu
Miscellaneous features that implement hot data tracking
and generally make the hot data functions a bit more friendly.
Signed-off-by: Zhi Yong Wu
---
fs/direct-io.c| 10 ++
include/linux/hot_track.h | 11 +++
mm/filemap.c |8
From: Zhi Yong Wu
Define two items hot_inode_item and hot_range_item,
one of them represents one tracked file
to keep track of its access frequency and the tree of
ranges in this file, while the latter represents
a file range of one inode.
Each of the two structures contains a hot_freq_data
s
From: Zhi Yong Wu
Fork and run one kernel kthread to calculate
that temperature based on some metrics kept
in custom frequency data structs, and store
the info in the hash table.
Signed-off-by: Zhi Yong Wu
---
fs/hot_hash.c | 316 +
fs
From: Zhi Yong Wu
FS_IOC_GET_HEAT_INFO: return a struct containing the various
metrics collected in btrfs_freq_data structs, and also return a
calculated data temperature based on those metrics. Optionally, retrieve
the temperature from the hot data hash list instead of recalculating it.
FS_
From: Zhi Yong Wu
Add a /sys/kernel/debug/hot_track// directory for each
volume that contains two files. The first, `inode_data', contains the
heat information for inodes that have been brought into the hot data map
structures. The second, `range_data', contains similar information for
subfile
From: Zhi Yong Wu
Adds a hash table structure which contains
a lot of hash list and is used to efficiently
look up the data temperature of a file or its
ranges.
In each hash list of hash table, the hash node
will keep track of temperature info.
Signed-off-by: Zhi Yong Wu
---
fs/Makefile
From: Zhi Yong Wu
NOTE:
The patchset can be obtained via my kernel dev git on github:
g...@github.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.tx
From: Zhi Yong Wu
Add some utils helpers to update access frequencies
for one file or its range.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 191 ++
fs/hot_tracking.h|9 ++
include/linux/hot_tracking.h |2 +
3 fil
From: Zhi Yong Wu
One root structure hot_info is defined, is hooked
up in super_block, and will be used to hold radix tree
root, hash list root and some other information, etc.
Adds hot_inode_tree struct to keep track of
frequently accessed files, and be keyed by {inode, offset}.
Trees contai
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c | 56 +
fs/hot_tracking.h |6 +
2 files changed, 62 insertions(+), 0 deletions(-)
diff --git a/fs/hot_tracking.c b/fs/hot_tracking.c
index 05624ad..575cd3a 100644
--
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c | 164 +
fs/hot_tracking.h | 54 +
2 files changed, 218 insertions(+), 0 deletions(-)
diff --git a/fs/hot_tracking.c b/fs/hot_tracking.c
index b5568bc..0562
From: Zhi Yong Wu
Adds two map arrays which contains
a lot of list and is used to efficiently
look up the data temperature of a file or its
ranges.
In each list of map arrays, the array node
will keep track of temperature info.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c|
From: Zhi Yong Wu
Register a shrinker to control the amount of
memory that is used in tracking hot regions - if we are throwing
inodes out of memory due to memory pressure, we most definitely are
going to need to reduce the amount of memory the tracking code is
using, even if it means losing us
From: Zhi Yong Wu
FS_IOC_GET_HEAT_INFO: return a struct containing the various
metrics collected in hot_freq_data structs, and also return a
calculated data temperature based on those metrics. Optionally, retrieve
the temperature from the hot data hash list instead of recalculating it.
Signed-
From: Zhi Yong Wu
Add a /sys/kernel/debug/hot_track// directory for each
volume that contains two files. The first, `inode_stats', contains the
heat information for inodes that have been brought into the hot data map
structures. The second, `range_stats', contains similar information for
subfil
From: Dave Chinner
Connect up the VFS hot tracking support
so XFS filesystems can make use of it.
Signed-off-by: Dave Chinner
---
fs/xfs/xfs_mount.h |1 +
fs/xfs/xfs_super.c | 16
2 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/fs/xfs/xfs_mount.h b/fs/x
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
Documentation/filesystems/00-INDEX |2 +
Documentation/filesystems/hot_tracking.txt | 164
2 files changed, 166 insertions(+), 0 deletions(-)
create mode 100644 Documentation/filesystems/hot_tracking.txt
From: Zhi Yong Wu
Turn TIME_TO_KICK and HEAT_UPDATE_DELAY
into be tunable via /proc/sys/fs/hot-kick-time and
/proc/sys/fs/hot-update-delay.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 12 +---
fs/hot_tracking.h|9 -
include/linux/hot_tracki
From: Zhi Yong Wu
Introduce one new mount option '-o hot_track',
and add its parsing support.
Its usage looks like:
mount -o hot_track
mount -o nouser,hot_track
mount -o nouser,hot_track,loop
mount -o hot_track,nouser
Signed-off-by: Zhi Yong Wu
---
fs/btrfs/ctree.h |1 +
fs
From: Zhi Yong Wu
Miscellaneous features that implement hot data tracking
and generally make the hot data functions a bit more friendly.
Signed-off-by: Zhi Yong Wu
---
fs/direct-io.c |6 ++
mm/filemap.c|6 ++
mm/page-writeback.c | 12
mm/readahead.
From: Zhi Yong Wu
Add initialization function to create some
key data structures when hot tracking is enabled;
Clean up them when hot tracking is disabled
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 125 ++
include/linux/fs.h
From: Zhi Yong Wu
Add a per-superblock workqueue and a work_struct
to run periodic work to update map info on each superblock.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 85 ++
fs/hot_tracking.h|3 +
include/linux/h
From: Zhi Yong Wu
NOTE:
The patchset is currently post out mainly to make sure
it is going in the correct direction and hope to get some
helpful comments from other guys.
For more infomation, please check hot_tracking.txt in Documentation
TODO List:
1.) Need to do scalability or performan
From: Zhi Yong Wu
FS_IOC_GET_HEAT_INFO: return a struct containing the various
metrics collected in btrfs_freq_data structs, and also return a
calculated data temperature based on those metrics. Optionally, retrieve
the temperature from the hot data hash list instead of recalculating it.
FS_
From: Zhi Yong Wu
Add a /sys/kernel/debug/hot_track// directory for each
volume that contains two files. The first, `inode_data', contains the
heat information for inodes that have been brought into the hot data map
structures. The second, `range_data', contains similar information for
subfile
From: Zhi Yong Wu
Introduce one new mount option '-o hottrack',
and add its parsing support.
Its usage looks like:
mount -o hottrack
mount -o nouser,hottrack
mount -o nouser,hottrack,loop
mount -o hottrack,nouser
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 3
From: Zhi Yong Wu
Add initialization function to create some
key data structures when hot tracking is enabled;
Clean up them when hot tracking is disabled
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c | 60 +
fs/hot_tracking.h |2 +
From: Zhi Yong Wu
Adds a hash table structure which contains
a lot of hash list and is used to efficiently
look up the data temperature of a file or its
ranges.
In each hash list of hash table, the hash node
will keep track of temperature info.
Signed-off-by: Zhi Yong Wu
---
fs/hot_trackin
From: Zhi Yong Wu
Fork and run one kernel kthread to calculate
that temperature based on some metrics kept
in custom frequency data structs, and store
the info in the hash table.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 467 +-
fs
From: Zhi Yong Wu
Miscellaneous features that implement hot data tracking
and generally make the hot data functions a bit more friendly.
Signed-off-by: Zhi Yong Wu
---
fs/direct-io.c | 10 ++
include/linux/hot_tracking.h | 11 +++
mm/filemap.c
From: Zhi Yong Wu
One root structure hot_info is defined, is hooked
up in super_block, and will be used to hold rb trees
root, hash list root and some other information, etc.
Adds hot_inode_tree struct to keep track of
frequently accessed files, and be keyed by {inode, offset}.
Trees contain
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
Documentation/filesystems/hot_tracking.txt | 106
1 files changed, 106 insertions(+), 0 deletions(-)
create mode 100644 Documentation/filesystems/hot_tracking.txt
diff --git a/Documentation/filesystems/hot_tracking
From: Zhi Yong Wu
Add some utils helpers to update access frequencies
for one file or its range.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c | 359 +
fs/hot_tracking.h | 15 +++
2 files changed, 374 insertions(+), 0 deletions(-)
di
From: Zhi Yong Wu
Need to close fd on exit.
Signed-off-by: Zhi Yong Wu
---
cmds-filesystem.c | 10 --
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index b1457de..e62c4fd 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@
From: Zhi Yong Wu
Some code pathes forget to free memory on exit.
Changelog from v1:
Fix the variable is used uncorrectly. [Ram Pai]
Signed-off-by: Zhi Yong Wu
---
cmds-filesystem.c |6 --
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/cmds-filesystem.c b/cmds-file
From: Zhi Yong Wu
Some misc bugs are found when i work on other tasks.
Now send out them for interview, thanks.
Zhi Yong Wu (2):
btrfs-progs: Close file descriptor on exit
btrfs-progs: Fix up memory leakage
cmds-filesystem.c | 16
1 files changed, 12 insertions(+), 4 d
From: Zhi Yong Wu
NOTE:
The patchset can be obtained via my kernel dev git on github:
g...@github.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 info, please check hot_tracking.txt in D
From: Zhi Yong Wu
Add initialization function to create some
key data structures when hot tracking is enabled;
Clean up them when hot tracking is disabled
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 124 ++
fs/hot_tracking.h
From: Zhi Yong Wu
Add some util helpers to update access frequencies
for one file or its range.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 179 ++
fs/hot_tracking.h|7 ++
include/linux/hot_tracking.h |2 +
3 file
From: Zhi Yong Wu
Adds two map arrays which contains
a lot of list and is used to efficiently
look up the data temperature of a file or its
ranges.
In each list of map arrays, the array node
will keep track of temperature info.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c|
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c | 74 +
1 files changed, 74 insertions(+), 0 deletions(-)
diff --git a/fs/hot_tracking.c b/fs/hot_tracking.c
index 0a603a1..83e590c 100644
--- a/fs/hot_tracking.c
+++ b/fs/h
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c | 66 +
fs/hot_tracking.h | 21 +
2 files changed, 87 insertions(+), 0 deletions(-)
diff --git a/fs/hot_tracking.c b/fs/hot_tracking.c
index 83e590c..9245d
From: Zhi Yong Wu
Introduce one framwork to enable that specific FS
can register its own hot tracking functions.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 78 ++
include/linux/hot_tracking.h | 25 +
2 files changed,
From: Zhi Yong Wu
FS_IOC_GET_HEAT_INFO: return a struct containing the various
metrics collected in hot_freq_data structs, and also return a
calculated data temperature based on those metrics. Optionally, retrieve
the temperature from the hot data hash list instead of recalculating it.
Signed-
From: Zhi Yong Wu
Introduce one new mount option '-o hot_track',
and add its parsing support.
Its usage looks like:
mount -o hot_track
mount -o nouser,hot_track
mount -o nouser,hot_track,loop
mount -o hot_track,nouser
Signed-off-by: Zhi Yong Wu
---
fs/btrfs/ctree.h |1 +
fs
From: Zheng Liu
Define a new mount option to add VFS hot
tracking support in order to use it in ext4.
CC: Zhi Yong Wu
Signed-off-by: Zheng Liu
---
fs/ext4/ext4.h |3 +++
fs/ext4/super.c | 13 -
2 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/fs/ext4/ext4.h
From: Zhi Yong Wu
The debugfs function is used to get expected dentry.
Signed-off-by: Zhi Yong Wu
---
fs/debugfs/inode.c | 26 ++
include/linux/debugfs.h |9 +
2 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/fs/debugfs/inode.c b/fs/d
From: Zhi Yong Wu
Add one doc for VFS hot tracking feature
Signed-off-by: Zhi Yong Wu
---
Documentation/filesystems/00-INDEX |2 +
Documentation/filesystems/hot_tracking.txt | 262
2 files changed, 264 insertions(+), 0 deletions(-)
create mode 10064
From: Zhi Yong Wu
Register a shrinker to control the amount of
memory that is used in tracking hot regions - if we are throwing
inodes out of memory due to memory pressure, we most definitely are
going to need to reduce the amount of memory the tracking code is
using, even if it means losing us
From: Zhi Yong Wu
Add two proc files hot-kick-time and hot-update-delay
under the dir /proc/sys/fs/ in order to turn
TIME_TO_KICK and HEAT_UPDATE_DELAY into be tunable.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 12 +---
fs/hot_tracking.h|9 --
From: Dave Chinner
Connect up the VFS hot tracking support
so XFS filesystems can make use of it.
Signed-off-by: Dave Chinner
---
fs/xfs/xfs_mount.h |1 +
fs/xfs/xfs_super.c | 16
2 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/fs/xfs/xfs_mount.h b/fs/x
From: Zhi Yong Wu
Add a /sys/kernel/debug/hot_track// directory for each
volume that contains two files. The first, `inode_stats', contains the
heat information for inodes that have been brought into the hot data map
structures. The second, `range_stats', contains similar information for
subfil
From: Zhi Yong Wu
Add a per-superblock workqueue and a delayed_work
to run periodic work to update map info on each superblock.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 85 ++
fs/hot_tracking.h|3 +
include/linux/
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c | 56 +
fs/hot_tracking.h |6 +
2 files changed, 62 insertions(+), 0 deletions(-)
diff --git a/fs/hot_tracking.c b/fs/hot_tracking.c
index 9245dd3..fff0038 100644
--
From: Zhi Yong Wu
Miscellaneous features that implement hot data tracking
and generally make the hot data functions a bit more friendly.
Signed-off-by: Zhi Yong Wu
---
fs/direct-io.c |6 ++
mm/filemap.c|6 ++
mm/page-writeback.c | 12
mm/readahead.
From: Zhi Yong Wu
One root structure hot_info is defined, is hooked
up in super_block, and will be used to hold radix tree
root, hash list root and some other information, etc.
Adds hot_inode_tree struct to keep track of
frequently accessed files, and be keyed by {inode, offset}.
Trees contai
From: Zhi Yong Wu
This patch includes the basic data structure and functions needed for
VFS hot tracking.
It adds hot_inode_tree struct to keep track of frequently accessed
files, and is keyed by {inode, offset}. Trees contain hot_inode_items
representing those files and hot_range_items represen
From: Zhi Yong Wu
The patchset is trying to introduce hot tracking function in
VFS layer, which will keep track of real disk I/O in memory.
By it, you will easily know more details about disk I/O, and
then detect where disk I/O hot spots are. Also, specific FS
can take use of it to do accurate
From: Zhi Yong Wu
Add a proc interface hot-update-interval under the dir
/proc/sys/fs/ in order to turn HOT_UPDATE_INTERVAL into
a tunable parameter.
Signed-off-by: Chandra Seetharaman
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 7 +--
fs/hot_tracking.h| 2 --
From: Zhi Yong Wu
Introduce one new mount option '-o hot_track',
and add its parsing support.
Its usage looks like:
mount -o hot_track
mount -o nouser,hot_track
mount -o nouser,hot_track,loop
mount -o hot_track,nouser
Reviewed-by: David Sterba
Signed-off-by: Chandra Seetharaman
Si
From: Zhi Yong Wu
Introduce a /proc interface hot-mem-high-thresh and
to cap the memory which is consumed by hot_inode_item
and hot_range_item, and they will be in the unit of
1M bytes.
Signed-off-by: Chandra Seetharaman
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 31 +++
From: Dave Chinner
Connect up the VFS hot tracking support so XFS filesystem
can make use of it.
Signed-off-by: Dave Chinner
Signed-off-by: Zhi Yong Wu
---
fs/xfs/xfs_mount.h | 1 +
fs/xfs/xfs_super.c | 18 ++
2 files changed, 19 insertions(+)
diff --git a/fs/xfs/xfs_mount.h
From: Zhi Yong Wu
FS_IOC_GET_HEAT_INFO: return a struct containing the various
metrics collected in hot_freq_data structs, and also return a
calculated data temperature based on those metrics.
Optionally, retrieve the temperature from the hot data hash list
instead of recalculating it.
Signed-o
From: Zhi Yong Wu
This patch adds read/write code paths: include read_pages(),
do_writepages(), do_generic_file_read() and __blockdev_direct_IO()
to record heat information.
When real disk i/o for an inode is done, its own hot_inode_item will
be created or updated in the RB tree for the filesyst
From: Zhi Yong Wu
Add Documentation for VFS hot tracking feature
Signed-off-by: Chandra Seetharaman
Signed-off-by: Zhi Yong Wu
---
Documentation/filesystems/00-INDEX | 2 +
Documentation/filesystems/hot_tracking.txt | 207 +
2 files changed, 209 insertion
From: Zhi Yong Wu
Register a shrinker to control the amount of memory that
is used in tracking hot regions. If we are throwing inodes
out of memory due to memory pressure, we most definitely are
going to need to reduce the amount of memory the tracking
code is using, even if it means losing usefu
From: Zhi Yong Wu
Add a workqueue per superblock and a delayed_work
to run periodic work to update map info on each superblock.
Two arrays of map list are defined, one is for hot inode
items, and the other is for hot extent items.
The hot items in the RB-tree will be at first distilled
into one
From: Zhi Yong Wu
Introduce one new mount option '-o hot_track',
and add its parsing support.
Its usage looks like:
mount -o hot_track
mount -o nouser,hot_track
mount -o nouser,hot_track,loop
mount -o hot_track,nouser
Signed-off-by: Zhi Yong Wu
---
fs/btrfs/ctree.h |1 +
fs/b
From: Zhi Yong Wu
Add initialization function to create some
key data structures when hot tracking is enabled;
Clean up them when hot tracking is disabled
Signed-off-by: Zhi Yong Wu
---
fs/btrfs/super.c |8 +++
fs/hot_tracking.c| 118 +
From: Zhi Yong Wu
One root structure hot_info is defined, is hooked
up in super_block, and will be used to hold radix tree
root, hash list root and some other information, etc.
Adds hot_inode_tree struct to keep track of
frequently accessed files, and be keyed by {inode, offset}.
Trees contai
From: Zhi Yong Wu
Miscellaneous features that implement hot data tracking
and generally make the hot data functions a bit more friendly.
Signed-off-by: Zhi Yong Wu
---
fs/direct-io.c |8
fs/hot_tracking.h |5 +
mm/filemap.c|7 +++
mm/page-writeback
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c | 57 +
fs/hot_tracking.h |6 +
2 files changed, 63 insertions(+), 0 deletions(-)
diff --git a/fs/hot_tracking.c b/fs/hot_tracking.c
index 717faa7..a8dc599 100644
--
From: Zhi Yong Wu
Register a shrinker to control the amount of
memory that is used in tracking hot regions - if we are throwing
inodes out of memory due to memory pressure, we most definitely are
going to need to reduce the amount of memory the tracking code is
using, even if it means losing us
From: Zhi Yong Wu
Add a /sys/kernel/debug/hot_track// directory for each
volume that contains two files. The first, `inode_data', contains the
heat information for inodes that have been brought into the hot data map
structures. The second, `range_data', contains similar information for
subfile
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c | 153 +
fs/hot_tracking.h | 60 +
2 files changed, 213 insertions(+), 0 deletions(-)
diff --git a/fs/hot_tracking.c b/fs/hot_tracking.c
index 08c42c5..
From: Zhi Yong Wu
FS_IOC_GET_HEAT_INFO: return a struct containing the various
metrics collected in btrfs_freq_data structs, and also return a
calculated data temperature based on those metrics. Optionally, retrieve
the temperature from the hot data hash list instead of recalculating it.
FS_
From: Zhi Yong Wu
Add a per-superblock workqueue and a work_struct
to run periodic work to update map info on each superblock.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 94 ++
fs/hot_tracking.h|3 +
include/linux/
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
Documentation/filesystems/00-INDEX |2 +
Documentation/filesystems/hot_tracking.txt | 165
2 files changed, 167 insertions(+), 0 deletions(-)
create mode 100644 Documentation/filesystems/hot_tracking.txt
From: Zhi Yong Wu
Add some utils helpers to update access frequencies
for one file or its range.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 190 ++
fs/hot_tracking.h| 12 +++
include/linux/hot_tracking.h |4 +
3 fi
From: Zhi Yong Wu
Adds two map arrays which contains
a lot of list and is used to efficiently
look up the data temperature of a file or its
ranges.
In each list of map arrays, the array node
will keep track of temperature info.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c|
From: Zhi Yong Wu
NOTE:
The patchset is currently post out mainly to make sure
it is going in the correct direction and hope to get some
helpful comments from other guys.
For more infomation, please check hot_tracking.txt in Documentation
TODO List:
1.) Need to do scalability or performan
From: Zhi Yong Wu
In ext4_ext_in_cache(), some codes are redundant,
this patch will remove them.
Reviewed-by: Zheng Liu
Signed-off-by: Zhi Yong Wu
---
fs/ext4/extents.c |2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 7011
From: Zhi Yong Wu
Add initialization function to create some
key data structures when hot tracking is enabled;
Clean up them when hot tracking is disabled
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 124 ++
include/linux/fs.h
From: Zhi Yong Wu
Add some util helpers to update access frequencies
for one file or its range.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c| 174 ++
fs/hot_tracking.h|5 +
include/linux/hot_tracking.h |4 +
3 files
From: Zhi Yong Wu
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c | 74 +
1 files changed, 74 insertions(+), 0 deletions(-)
diff --git a/fs/hot_tracking.c b/fs/hot_tracking.c
index 7101b73..3fd6255 100644
--- a/fs/hot_tracking.c
+++ b/fs/h
From: Zhi Yong Wu
Adds two map arrays which contains
a lot of list and is used to efficiently
look up the data temperature of a file or its
ranges.
In each list of map arrays, the array node
will keep track of temperature info.
Signed-off-by: Zhi Yong Wu
---
fs/hot_tracking.c|
From: Zhi Yong Wu
FS_IOC_GET_HEAT_INFO: return a struct containing the various
metrics collected in hot_freq_data structs, and also return a
calculated data temperature based on those metrics. Optionally, retrieve
the temperature from the hot data hash list instead of recalculating it.
Signed-
From: Zhi Yong Wu
Register a shrinker to control the amount of
memory that is used in tracking hot regions - if we are throwing
inodes out of memory due to memory pressure, we most definitely are
going to need to reduce the amount of memory the tracking code is
using, even if it means losing us
From: Zhi Yong Wu
Introduce one new mount option '-o hot_track',
and add its parsing support.
Its usage looks like:
mount -o hot_track
mount -o nouser,hot_track
mount -o nouser,hot_track,loop
mount -o hot_track,nouser
Reviewed-by: David Sterba
Signed-off-by: Zhi Yong Wu
---
From: Zheng Liu
Define a new mount option to add VFS hot
tracking support in order to use it in ext4.
CC: Zhi Yong Wu
Signed-off-by: Zheng Liu
---
fs/ext4/ext4.h |3 +++
fs/ext4/super.c | 13 -
2 files changed, 15 insertions(+), 1 deletions(-)
diff --git a/fs/ext4/ext4.h
1 - 100 of 187 matches
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