system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-19 09:49:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

ABI: sysfs-class-bdi: use What: to describe each property

Browse source 
Instead of listing all bdi entries inside the description, add
one entry for each, just like the remaining ABI files.

That allows get_abi.pl script to properly parse it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/77e5904dfd275ed2670cd13779e5ef1da96e355c.1632750608.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mauro Carvalho Chehab 2021-09-27 15:59:44 +02:00 committed by Greg Kroah-Hartman
parent bab2f3c14e
commit 8a60958923
1 changed files with 21 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

30
Documentation/ABI/testing/sysfs-class-bdi
View file

@ -23,14 +23,17 @@ default
The default backing dev, used for non-block device backed The default backing dev, used for non-block device backed
filesystems which do not provide their own BDI. filesystems which do not provide their own BDI.
Files under /sys/class/bdi/<bdi>/ What: /sys/class/bdi/<bdi>/read_ahead_kb
Date: January 2008
read_ahead_kb (read-write) Contact: Peter Zijlstra <a.p.zijlstra@chello.nl>
Description:
Size of the read-ahead window in kilobytes Size of the read-ahead window in kilobytes
min_ratio (read-write) (read-write)
What: /sys/class/bdi/<bdi>/min_ratio
Date: January 2008
Contact: Peter Zijlstra <a.p.zijlstra@chello.nl>
Description:
Under normal circumstances each device is given a part of the Under normal circumstances each device is given a part of the
total write-back cache that relates to its current average total write-back cache that relates to its current average
writeout speed in relation to the other devices. writeout speed in relation to the other devices.
@ -39,8 +42,12 @@ min_ratio (read-write)
percentage of the write-back cache to a particular device. percentage of the write-back cache to a particular device.
For example, this is useful for providing a minimum QoS. For example, this is useful for providing a minimum QoS.
max_ratio (read-write) (read-write)
What: /sys/class/bdi/<bdi>/max_ratio
Date: January 2008
Contact: Peter Zijlstra <a.p.zijlstra@chello.nl>
Description:
Allows limiting a particular device to use not more than the Allows limiting a particular device to use not more than the
given percentage of the write-back cache. This is useful in given percentage of the write-back cache. This is useful in
situations where we want to avoid one device taking all or situations where we want to avoid one device taking all or
@ -48,7 +55,12 @@ max_ratio (read-write)
mount that is prone to get stuck, or a FUSE mount which cannot mount that is prone to get stuck, or a FUSE mount which cannot
be trusted to play fair. be trusted to play fair.
stable_pages_required (read-only) (read-write)
What: /sys/class/bdi/<bdi>/stable_pages_required
Date: January 2008
Contact: Peter Zijlstra <a.p.zijlstra@chello.nl>
Description:
If set, the backing device requires that all pages comprising a write If set, the backing device requires that all pages comprising a write
request must not be changed until writeout is complete. request must not be changed until writeout is complete.
(read-only)