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yaml
---
r: 96058
b: refs/heads/master
c: a153063
h: refs/heads/master
v: v3
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Linus Torvalds committed May 6, 2008
1 parent 4d3872d commit e1527a3
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: c5057ddccbcb4bf363af628d7963a7475f4114a7
refs/heads/master: a15306365a16380f3bafee9e181ba01231d4acd7
1 change: 1 addition & 0 deletions trunk/.gitignore
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Expand Up @@ -41,6 +41,7 @@ include/linux/autoconf.h
include/linux/compile.h
include/linux/version.h
include/linux/utsrelease.h
include/linux/bounds.h

# stgit generated dirs
patches-*
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1 change: 1 addition & 0 deletions trunk/.mailmap
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Expand Up @@ -88,6 +88,7 @@ Rudolf Marek <R.Marek@sh.cvut.cz>
Rui Saraiva <rmps@joel.ist.utl.pt>
Sachin P Sant <ssant@in.ibm.com>
Sam Ravnborg <sam@mars.ravnborg.org>
S.Çağlar Onur <caglar@pardus.org.tr>
Simon Kelley <simon@thekelleys.org.uk>
Stéphane Witzmann <stephane.witzmann@ubpmes.univ-bpclermont.fr>
Stephen Hemminger <shemminger@osdl.org>
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46 changes: 46 additions & 0 deletions trunk/Documentation/ABI/testing/sysfs-class-bdi
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What: /sys/class/bdi/<bdi>/
Date: January 2008
Contact: Peter Zijlstra <a.p.zijlstra@chello.nl>
Description:

Provide a place in sysfs for the backing_dev_info object. This allows
setting and retrieving various BDI specific variables.

The <bdi> identifier can be either of the following:

MAJOR:MINOR

Device number for block devices, or value of st_dev on
non-block filesystems which provide their own BDI, such as NFS
and FUSE.

default

The default backing dev, used for non-block device backed
filesystems which do not provide their own BDI.

Files under /sys/class/bdi/<bdi>/
---------------------------------

read_ahead_kb (read-write)

Size of the read-ahead window in kilobytes

min_ratio (read-write)

Under normal circumstances each device is given a part of the
total write-back cache that relates to its current average
writeout speed in relation to the other devices.

The 'min_ratio' parameter allows assigning a minimum
percentage of the write-back cache to a particular device.
For example, this is useful for providing a minimum QoS.

max_ratio (read-write)

Allows limiting a particular device to use not more than the
given percentage of the write-back cache. This is useful in
situations where we want to avoid one device taking all or
most of the write-back cache. For example in case of an NFS
mount that is prone to get stuck, or a FUSE mount which cannot
be trusted to play fair.
2 changes: 1 addition & 1 deletion trunk/Documentation/DocBook/Makefile
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Expand Up @@ -12,7 +12,7 @@ DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml videobook.xml \
kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \
gadget.xml libata.xml mtdnand.xml librs.xml rapidio.xml \
genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \
mac80211.xml
mac80211.xml debugobjects.xml

###
# The build process is as follows (targets):
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