[PATCH 2/3] writeback: introduce dirty_volatile_interval
Introduce dirty_volatile_interval for the minimal dirty time.
Inodes dirtied less than dirty_volatile_interval will not be
considered for syncing by kupdate-style writeback.
This new parameter will be used in clustered writeback.
The old dirty_expire_interval is still(but less) respected.
Cc: Chris Mason <[EMAIL PROTECTED]>
Cc: Jens Axboe <[EMAIL PROTECTED]>
Cc: David Chinner <[EMAIL PROTECTED]>
Cc: Ken Chen <[EMAIL PROTECTED]>
Cc: Michael Rubin <[EMAIL PROTECTED]>
Cc: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Fengguang Wu <[EMAIL PROTECTED]>
---
include/linux/writeback.h |1 +
kernel/sysctl.c |7 +++
mm/page-writeback.c |5 +
3 files changed, 13 insertions(+)
--- linux-2.6.23-rc3-mm1.orig/include/linux/writeback.h
+++ linux-2.6.23-rc3-mm1/include/linux/writeback.h
@@ -101,6 +101,7 @@ extern int dirty_background_ratio;
extern int vm_dirty_ratio;
extern int dirty_writeback_interval;
extern int dirty_expire_interval;
+extern int dirty_volatile_interval;
extern int block_dump;
extern int laptop_mode;
--- linux-2.6.23-rc3-mm1.orig/mm/page-writeback.c
+++ linux-2.6.23-rc3-mm1/mm/page-writeback.c
@@ -85,6 +85,11 @@ int dirty_writeback_interval = 5 * HZ;
int dirty_expire_interval = 30 * HZ;
/*
+ * The shortest number of jiffies for which data should remain dirty
+ */
+int dirty_volatile_interval = 5 * HZ;
+
+/*
* Flag that makes the machine dump writes/reads and block dirtyings.
*/
int block_dump;
--- linux-2.6.23-rc3-mm1.orig/kernel/sysctl.c
+++ linux-2.6.23-rc3-mm1/kernel/sysctl.c
@@ -837,6 +837,13 @@ static struct ctl_table vm_table[] = {
.proc_handler = _dointvec_userhz_jiffies,
},
{
+ .procname = "dirty_volatile_centisecs",
+ .data = _volatile_interval,
+ .maxlen = sizeof(dirty_volatile_interval),
+ .mode = 0644,
+ .proc_handler = _dointvec_userhz_jiffies,
+ },
+ {
.ctl_name = VM_NR_PDFLUSH_THREADS,
.procname = "nr_pdflush_threads",
.data = _pdflush_threads,
--
-
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[PATCH 2/3] writeback: introduce dirty_volatile_interval
Introduce dirty_volatile_interval for the minimal dirty time.
Inodes dirtied less than dirty_volatile_interval will not be
considered for syncing by kupdate-style writeback.
This new parameter will be used in clustered writeback.
The old dirty_expire_interval is still(but less) respected.
Cc: Chris Mason [EMAIL PROTECTED]
Cc: Jens Axboe [EMAIL PROTECTED]
Cc: David Chinner [EMAIL PROTECTED]
Cc: Ken Chen [EMAIL PROTECTED]
Cc: Michael Rubin [EMAIL PROTECTED]
Cc: Andrew Morton [EMAIL PROTECTED]
Signed-off-by: Fengguang Wu [EMAIL PROTECTED]
---
include/linux/writeback.h |1 +
kernel/sysctl.c |7 +++
mm/page-writeback.c |5 +
3 files changed, 13 insertions(+)
--- linux-2.6.23-rc3-mm1.orig/include/linux/writeback.h
+++ linux-2.6.23-rc3-mm1/include/linux/writeback.h
@@ -101,6 +101,7 @@ extern int dirty_background_ratio;
extern int vm_dirty_ratio;
extern int dirty_writeback_interval;
extern int dirty_expire_interval;
+extern int dirty_volatile_interval;
extern int block_dump;
extern int laptop_mode;
--- linux-2.6.23-rc3-mm1.orig/mm/page-writeback.c
+++ linux-2.6.23-rc3-mm1/mm/page-writeback.c
@@ -85,6 +85,11 @@ int dirty_writeback_interval = 5 * HZ;
int dirty_expire_interval = 30 * HZ;
/*
+ * The shortest number of jiffies for which data should remain dirty
+ */
+int dirty_volatile_interval = 5 * HZ;
+
+/*
* Flag that makes the machine dump writes/reads and block dirtyings.
*/
int block_dump;
--- linux-2.6.23-rc3-mm1.orig/kernel/sysctl.c
+++ linux-2.6.23-rc3-mm1/kernel/sysctl.c
@@ -837,6 +837,13 @@ static struct ctl_table vm_table[] = {
.proc_handler = proc_dointvec_userhz_jiffies,
},
{
+ .procname = dirty_volatile_centisecs,
+ .data = dirty_volatile_interval,
+ .maxlen = sizeof(dirty_volatile_interval),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_userhz_jiffies,
+ },
+ {
.ctl_name = VM_NR_PDFLUSH_THREADS,
.procname = nr_pdflush_threads,
.data = nr_pdflush_threads,
--
-
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the body of a message to [EMAIL PROTECTED]
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Please read the FAQ at http://www.tux.org/lkml/
