Kernel

[PATCH 0/4 -tip] delay documentation and checkpatch additions
This patchset depends on: commit 22b8f15c2f7130bb0386f548428df2ffd4e81903 Author: Patrick Pannuto <ppannuto(a)codeaurora.org> Date: Mon Jul 19 15:09:26 2010 -0700 timer: Added usleep[_range] timer on tip/master The series first introduces some documentation explaining the various linux delay mechanis... 27 Jul 2010 19:29

arm: msm: Add System MMU support.
On Tue, 2010-07-27 at 15:41 -0700, Stepan Moskovchenko wrote: +/* Copyright (c) 2010, Code Aurora Forum. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistr... 4 Aug 2010 06:00

[PATCH 3/4] Checkpatch: prefer usleep_range over usleep
In (almost) every case, usleep_range is better than usleep, as the precise (ish) wakeup - more accurately the extra interrupt - from usleep is unnecessary. usleep_range gives a much better chance of coalescing processor wakeups. Signed-off-by: Patrick Pannuto <ppannuto(a)codeaurora.org> --- scripts/checkpatch... 27 Jul 2010 19:29

mmotm 2010-07-27-14-56 uploaded
The mm-of-the-moment snapshot 2010-07-27-14-56 has been uploaded to http://userweb.kernel.org/~akpm/mmotm/ and will soon be available at git://zen-kernel.org/kernel/mmotm.git It contains the following patches against 2.6.35-rc6: origin.patch dynamic-debug-move-ddebug_remove_module-down-into-free_m... 27 Jul 2010 19:29

dvb: siano: free spinlock before schedule()
On 07/27/2010 08:42 PM, Kulikov Vasiliy wrote: Calling schedule() holding spinlock with disables irqs is improper. As spinlock protects list coredev->buffers, it can be unlocked untill wakeup. This bug was introduced in a9349315f65cd6a16e8fab1f6cf0fd40f379c4db. Signed-off-by: Kulikov Vasiliy <segooon(a)gm... 8 Aug 2010 13:24

[RFC PATCH 3/5] Btrfs: 3 new ioctls related to hot data features
From: Ben Chociej <bcchocie(a)us.ibm.com> BTRFS_IOC_GET_HEAT_INFO: return a struct containing the various metrics collected in btrfs_freq_data structs, and also return a calculated data temperature based on those metrics. Optionally, retrieve the temperature from the hot data hash list instead of recalculating it. ... 27 Jul 2010 18:23

[RFC PATCH 4/5] Btrfs: Add debugfs interface for hot data stats
From: Ben Chociej <bcchocie(a)us.ibm.com> Adds a ./btrfs_data/<device_name>/ directory in the debugfs directory for each volume. The directory contains two files. The first, `inode_data', contains the heat information for inodes that have been brought into the hot data map structures. The second, `range_data', con... 27 Jul 2010 18:23

[RFC PATCH 5/5] Btrfs: Add hooks to enable hot data tracking
From: Ben Chociej <bcchocie(a)us.ibm.com> Miscellaneous features that enable hot data tracking features, open the door for future hot data migration to faster media, and generally make the hot data functions a bit more friendly. ctree.h: Add the root hot_inode_tree and heat hashlists. Defines some mount options ... 27 Jul 2010 18:23

[RFC PATCH 1/5] Btrfs: Add experimental hot data hash list index
From: Ben Chociej <bcchocie(a)us.ibm.com> Adds a hash table structure to efficiently lookup the data temperature of a file. Also adds a function to calculate that temperature based on some metrics kept in custom frequency data structs. Signed-off-by: Ben Chociej <bcchocie(a)us.ibm.com> Signed-off-by: Matt Lupfer <... 27 Jul 2010 18:23

[RFC PATCH 0/5] Btrfs: Add hot data tracking functionality
INTRODUCTION: This patch series adds experimental support for tracking data temperature in Btrfs. Essentially, this means maintaining some key stats (like number of reads/writes, last read/write time, frequency of reads/writes), then distilling those numbers down to a single "temperature" value that reflects wha... 27 Jul 2010 18:23