Kernel

writeback: try more writeback as long as something was written
On Thu, Jul 22, 2010 at 01:09:33PM +0800, Wu Fengguang wrote: writeback_inodes_wb()/__writeback_inodes_sb() are not agressive in that they only populate b_io when necessary at entrance time. When the queued set of inodes are all synced, they just return, possibly with wbc.nr_to_write > 0. For kupdate... 26 Jul 2010 07:16

hw-breakpoints, kgdb, x86: add a flag topassDIE_DEBUG notification
Frederic Weisbecker wrote: On Fri, Jul 23, 2010 at 10:49:20AM -0500, Jason Wessel wrote: On 07/23/2010 09:07 AM, Frederic Weisbecker wrote: On Fri, Jul 23, 2010 at 08:19:54AM -0500, Jason Wessel wrote: On 07/23/2010 08:04 AM, Frederic Weisbecker wrote: The patch may or may not... 26 Jul 2010 07:16

sysrq: don't hold the sysrq_key_table_lock during the handler
On Mon, Jul 26, 2010 at 05:54:02PM +0800, Xiaotian Feng wrote: sysrq_key_table_lock is used to protect the sysrq_key_table, make sure we get/replace the right operation for the sysrq. But in __handle_sysrq, kernel will hold this lock and disable irqs until we finished op_p->handler(). This may cause false p... 27 Jul 2010 20:35

writeback: the kupdate expire timestamp should be a moving target
On Thu, Jul 22, 2010 at 01:09:30PM +0800, Wu Fengguang wrote: Dynamicly compute the dirty expire timestamp at queue_io() time. Also remove writeback_control.older_than_this which is no longer used. writeback_control.older_than_this used to be determined at entrance to the kupdate writeback work. This _s... 26 Jul 2010 07:16

writeback: sync expired inodes first in background writeback
On Thu, Jul 22, 2010 at 01:09:32PM +0800, Wu Fengguang wrote: A background flush work may run for ever. So it's reasonable for it to mimic the kupdate behavior of syncing old/expired inodes first. The policy is - enqueue all newly expired inodes at each queue_io() time - retry with halfed expire inte... 27 Jul 2010 06:14

linux-next: build failure after merge of the final tree (xen tree related)
On Mon, 26 Jul 2010, Stephen Rothwell wrote: Hi all, After merging the final tree, today's linux-next build (i386 defconfig) failed like this: arch/x86/built-in.o: In function `init_hypervisor_platform': (.init.text+0x3ca4): undefined reference to `x86_hyper_xen_hvm' arch/x86/built-in.o: In fu... 26 Jul 2010 20:29

writeback: pass writeback_control down to move_expired_inodes()
On Thu, Jul 22, 2010 at 01:09:29PM +0800, Wu Fengguang wrote: This is to prepare for moving the dirty expire policy to move_expired_inodes(). No behavior change. Signed-off-by: Wu Fengguang <fengguang.wu(a)intel.com> Can't see any problem. Acked-by: Mel Gorman <mel(a)csn.ul.ie> -- Mel Gorman Part-t... 26 Jul 2010 07:16

vmscan: convert direct reclaim tracepoint to DEFINE_TRACE
On Mon, Jul 26, 2010 at 8:33 AM, KOSAKI Motohiro <kosaki.motohiro(a)jp.fujitsu.com> wrote: Mel Gorman recently added some vmscan tracepoints. Unfortunately they are covered only global reclaim. But we want to trace memcg reclaim too. Thus, this patch convert them to DEFINE_TRACE macro. it help to reuse tr... 26 Jul 2010 07:16

kexec: increase max of kexec segments and use dynamic allocation
On 07/25/10 10:54, Eric W. Biederman wrote: huang ying<huang.ying.caritas(a)gmail.com> writes: On Thu, Jul 22, 2010 at 3:08 PM, Eric W. Biederman <ebiederm(a)xmission.com> wrote: Cong Wang<amwang(a)redhat.com> writes: On 07/22/10 14:28, Eric W. Biederman wrote: Amerigo Wang<amwang(a)redh... 26 Jul 2010 06:12

[PATCH] drop_monitor: use genl_register_family_with_ops()
Signed-off-by: Changli Gao <xiaosuo(a)gmail.com> ---- net/core/drop_monitor.c | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-) diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c index 646ef3b..bdb0e96 100644 --- a/net/core/drop_monitor.c +++ b/net/core/drop_monitor.c @@ -3... 26 Jul 2010 06:12