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authorTheodore Ts'o <tytso@mit.edu>2015-03-17 12:23:32 -0400
committerTheodore Ts'o <tytso@mit.edu>2015-03-17 12:23:32 -0400
commit1efff914afac8a965ad63817ecf8861a927c2ace (patch)
treed7b582a4811e957a7dc6abd26629694276e19e2d /include/linux/writeback.h
parenta2f4870697a5bcf4a87073ec6b32dd2928c1211d (diff)
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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>
Diffstat (limited to 'include/linux/writeback.h')
-rw-r--r--include/linux/writeback.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 00048339c23e..b2dd371ec0ca 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -130,6 +130,7 @@ extern int vm_dirty_ratio;
extern unsigned long vm_dirty_bytes;
extern unsigned int dirty_writeback_interval;
extern unsigned int dirty_expire_interval;
+extern unsigned int dirtytime_expire_interval;
extern int vm_highmem_is_dirtyable;
extern int block_dump;
extern int laptop_mode;
@@ -146,6 +147,8 @@ extern int dirty_ratio_handler(struct ctl_table *table, int write,
extern int dirty_bytes_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
+int dirtytime_interval_handler(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos);
struct ctl_table;
int dirty_writeback_centisecs_handler(struct ctl_table *, int,