fs: add dirtytime_expire_seconds sysctl
authorTheodore Ts'o <tytso@mit.edu>
Tue, 17 Mar 2015 16:23:32 +0000 (12:23 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Tue, 17 Mar 2015 16:23:32 +0000 (12:23 -0400)
commit1efff914afac8a965ad63817ecf8861a927c2ace
treed7b582a4811e957a7dc6abd26629694276e19e2d
parenta2f4870697a5bcf4a87073ec6b32dd2928c1211d
fs: add dirtytime_expire_seconds sysctl

Add a tuning knob so we can adjust the dirtytime expiration timeout,
which is very useful for testing lazytime.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
fs/fs-writeback.c
include/linux/writeback.h
kernel/sysctl.c