Kernel

rcu: make rcu_read_lock_bh_held() allow for disabled BH
Paul E. McKenney wrote: Disabling BH can stand in for rcu_read_lock_bh(), and this patch updates rcu_read_lock_bh_held() to allow for this. In order to avoid include-file hell, this function is moved out of line to kernel/rcupdate.c. Reported-by: Arnd Bergmann <arnd(a)arndb.de> Reported-by: Eric Dumaz... 16 Mar 2010 02:26

[PATCH 3/5] tmpfs: handle MPOL_LOCAL mount option properly
commit 71fe804b6d5 (mempolicy: use struct mempolicy pointer in shmem_sb_info) added mpol=local mount option. but its feature is broken since it was born. because such code always return 1 (i.e. mount failure). This patch fixes it. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro(a)jp.fujitsu.com> Cc: Ravikiran T... 16 Mar 2010 02:26

[PATCH 2/5] tmpfs: mpol=bind:0 don't cause mount error.
Currently, following mount operation cause mount error. % mount -t tmpfs -ompol=bind:0 none /tmp Because commit 71fe804b6d5 (mempolicy: use struct mempolicy pointer in shmem_sb_info) corrupted MPOL_BIND parse code. This patch restore the needed one. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro(a)jp.fujits... 16 Mar 2010 02:26

[PATCH 5/5] doc: add the documentation for mpol=local
commit 3f226aa1c (mempolicy: support mpol=local tmpfs mount option) added new mpol=local mount option. but it didn't add a documentation. This patch does it. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro(a)jp.fujitsu.com> Cc: Ravikiran Thirumalai <kiran(a)scalex86.org> Cc: Christoph Lameter <cl(a)linux-foundation.... 16 Mar 2010 02:26

Enhance perf to collect KVM guest os statistics from host side
On 03/16/2010 07:27 AM, Zhang, Yanmin wrote: From: Zhang, Yanmin<yanmin_zhang(a)linux.intel.com> Based on the discussion in KVM community, I worked out the patch to support perf to collect guest os statistics from host side. This patch is implemented with Ingo, Peter and some other guys' kind help. Yang Sh... 23 Mar 2010 21:45

+ tmpfs-fix-oops-on-remounts-with-mpol=default.patch added to -mm tree
> ------------------------------------------------------ Subject: tmpfs: fix oops on remounts with mpol=default From: Ravikiran G Thirumalai <kiran(a)scalex86.org> Fix an 'oops' when a tmpfs mount point is remounted with the 'default' mempolicy. Upon remounting a tmpfs mount point with 'mpol=defaul... 16 Mar 2010 02:26

[PATCH] staging:cx25821: fixes coding styles issues in cx25821-gpio.c This patch is to the cx25821-gpio.c file that fixes up warning and error found by the checkpatch.pl tool Signed-off-by: sai <tsg321@gmail.com>
From: sai <sai(a)sai-desktop.(none)> --- drivers/staging/cx25821/cx25821-gpio.c | 26 +++++++++++++------------- 1 files changed, 13 insertions(+), 13 deletions(-) diff --git a/drivers/staging/cx25821/cx25821-gpio.c b/drivers/staging/cx25821/cx25821-gpio.c index e8a37b4..cefa091 100644 --- a/drivers/staging/... 16 Mar 2010 01:20

[PATCH] Remove GENHD_FL_DRIVERFS
This flag is not used, so best discarded. Signed-off-by: NeilBrown <neilb(a)suse.de> -- Hi Jens, I came across this recently - these are the only two occurances of "GENHD_FL_DRIVERFS" in the kernel, so it cannot be needed. NeilBrown diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 83881df..a82... 16 Mar 2010 00:06

powerpc/perf_events: Implement perf_arch_fetch_caller_regs for powerpc
On Mon, Mar 15, 2010 at 10:04:54PM +0100, Frederic Weisbecker wrote: On Mon, Mar 15, 2010 at 04:46:15PM +1100, Paul Mackerras wrote: 14.99% perf [kernel.kallsyms] [k] ._raw_spin_lock | --- ._raw_spin_lock | ... 16 Mar 2010 00:06

[RFC]cfq-iosched: fix a kbuild regression
Alex Shi reported a kbuild regression which is about 10% performance lost. He bisected to this commit: 3dde36ddea3e07dd025c4c1ba47edec91606fec0. The reason is cfqq_close() can't find close cooperator. If we store the seek distance to the value before the commit like below, the regression fully goes away. If this is... 16 Mar 2010 00:06