writeback: disable periodic old data writeback for !dirty_writeback_centisecs

Browse source

commit 69b62d01ec upstream.

Prior to 2.6.32, setting /proc/sys/vm/dirty_writeback_centisecs disabled
periodic dirty writeback from kupdate. This got broken and now causes
excessive sys CPU usage if set to zero, as we'll keep beating on
schedule().

Reported-by: Justin Maggard <jmaggard10@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

...

This commit is contained in:

Jens Axboe 2010-05-17 12:51:03 +02:00 • committed by Greg Kroah-Hartman

parent e0d3a4aeaf

commit ff021ea1d8

1 changed files with 12 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

14

fs/fs-writeback.c

View file