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authorJens Axboe <jens.axboe@oracle.com>2010-05-17 14:51:03 +0400
committerJens Axboe <jens.axboe@oracle.com>2010-05-17 14:51:03 +0400
commit69b62d01ec44fe0d505d89917392347732135a4d (patch)
treeda40561f3d87ee1073e92ca925ed3ed36708a1d7 /fs/sync.c
parent2395e463fefd4aa8b784787e926e9b84e216d14f (diff)
downloadlinux-69b62d01ec44fe0d505d89917392347732135a4d.tar.xz
writeback: disable periodic old data writeback for !dirty_writeback_centisecs
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(). Cc: stable@kernel.org Reported-by: Justin Maggard <jmaggard10@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs/sync.c')
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