Paul E. McKenney a26ac2455f rcu: move TREE_RCU from softirq to kthread ... If RCU priority boosting is to be meaningful, callback invocation must be boosted in addition to preempted RCU readers. Otherwise, in presence of CPU real-time threads, the grace period ends, but the callbacks don't get invoked. If the callbacks don't get invoked, the associated memory doesn't get freed, so the system is still subject to OOM. But it is not reasonable to priority-boost RCU_SOFTIRQ, so this commit moves the callback invocations to a kthread, which can be boosted easily. Also add comments and properly synchronized all accesses to rcu_cpu_kthread_task, as suggested by Lai Jiangshan. Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>		2011-05-05 23:16:54 -07:00
..
caching	Fix common misspellings	2011-03-31 11:26:23 -03:00
configfs	Fix common misspellings	2011-03-31 11:26:23 -03:00
nfs	NFSv4.1: lseg documentation	2011-03-11 15:38:43 -05:00
pohmelfs	Fix common misspellings	2011-03-31 11:26:23 -03:00
9p.txt	fs/9p: Add access = client option to opt in acl evaluation.	2010-10-28 09:08:46 -05:00
00-INDEX	smbfs: move to drivers/staging	2010-10-05 09:08:21 -07:00
adfs.txt	adfs: add hexadecimal filetype suffix option	2011-03-22 17:44:17 -07:00
affs.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
afs.txt	AFS: Documentation updates	2009-08-19 10:40:13 -07:00
autofs4-mount-control.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
automount-support.txt
befs.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
bfs.txt	remove mention of CONFIG_KMOD from documentation	2008-07-22 19:24:29 +10:00
btrfs.txt	Btrfs: Add Documentation/filesystem/btrfs.txt, remove old COPYING	2009-01-07 09:54:24 -05:00
ceph.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
cifs.txt
coda.txt
cramfs.txt
debugfs.txt	Document the debugfs API	2009-06-06 10:28:14 -06:00
devpts.txt	Document usage of multiple-instances of devpts	2009-01-02 10:19:36 -08:00
directory-locking	Documentation: Fix up docs still talking about i_sem	2007-05-24 10:16:17 -07:00
dlmfs.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
dnotify_test.c	Documentation/fs/: split txt and source files	2010-03-12 15:52:35 -08:00
dnotify.txt	Documentation/fs/: split txt and source files	2010-03-12 15:52:35 -08:00
ecryptfs.txt	eCryptfs: Move ecryptfs docs into Documentation/filesystems/	2007-07-17 10:23:08 -07:00
exofs.txt	exofs: Add option to mount by osdname	2011-03-15 15:02:51 +02:00
ext2.txt	Doc fix: ext2 can only have 32,000 subdirs, not 32,768	2009-06-18 13:03:44 -07:00
ext3.txt	ext3: make barrier options consistent with ext4	2010-05-21 19:30:41 +02:00
ext4.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
fiemap.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
files.txt	fix f_count description in Documentation/filesystems/files.txt	2008-12-31 18:07:42 -05:00
fuse.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
gfs2-glocks.txt	GFS2: Update docs	2009-05-19 10:23:23 +01:00
gfs2-uevents.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
gfs2.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
hfs.txt
hfsplus.txt	Documentation: document HFSPlus	2007-07-31 15:39:38 -07:00
hpfs.txt	Documentation/: it's -> its where appropriate	2010-04-23 02:09:52 +02:00
inotify.txt
isofs.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
jfs.txt	JFS: document uid, gid, and umask mount options in jfs.txt	2007-03-09 10:27:31 -06:00
Locking	fs: remove inode_lock from iput_final and prune_icache	2011-03-24 21:16:32 -04:00
locks.txt	Documentation: move locks.txt in filesystems/	2007-10-09 18:32:45 -04:00
logfs.txt	fix "seperate" typos in comments	2010-05-10 11:56:30 +02:00
Makefile	Documentation/fs/: split txt and source files	2010-03-12 15:52:35 -08:00
mandatory-locking.txt	locks: add warning about mandatory locking races	2007-10-09 18:32:45 -04:00
ncpfs.txt	ncpfs: remove dead URL from documentation	2009-09-23 07:39:42 -07:00
nilfs2.txt	nilfs2: add nodiscard mount option	2010-07-23 10:02:12 +09:00
ntfs.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
ocfs2.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
omfs.txt	omfs: add filesystem documentation	2008-07-26 12:00:05 -07:00
path-lookup.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
porting	fs: remove inode_lock from iput_final and prune_icache	2011-03-24 21:16:32 -04:00
proc.txt	rcu: move TREE_RCU from softirq to kthread	2011-05-05 23:16:54 -07:00
quota.txt	quota: documentation for sending "below quota" messages via netlink and tiny doc update	2008-08-12 16:07:27 -07:00
ramfs-rootfs-initramfs.txt	Trivial Documentation/filesystems/ramfs-rootfs-initramfs.txt fix	2008-11-30 11:40:56 -08:00
relay.txt	relay: add buffer-only channels; useful for early logging	2008-07-26 12:00:04 -07:00
romfs.txt	Documentation/filesystems/romfs.txt: fixing link to genromfs	2011-02-17 22:04:46 +01:00
seq_file.txt	seq_file: use proc_create() in documentation	2009-12-16 07:20:07 -08:00
sharedsubtree.txt	Documentation: Fix trivial typo in filesystems/sharedsubtree.txt	2010-10-25 21:18:21 -04:00
spufs.txt
squashfs.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
sysfs-pci.txt	PCI: Allow read/write access to sysfs I/O port resources	2010-07-30 09:32:08 -07:00
sysfs-tagging.txt	sysfs-namespaces: add a high-level Documentation file	2010-05-21 09:37:31 -07:00
sysfs.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
sysv-fs.txt
tmpfs.txt	mempolicy: document cpuset interaction with tmpfs mpol mount option	2010-05-25 08:06:57 -07:00
ubifs.txt	UBIFS: do not check data crc by default	2011-03-11 10:52:07 +02:00
udf.txt	udf: implement mode and dmode mounting options	2009-04-02 12:29:50 +02:00
ufs.txt
vfat.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
vfs.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs-delayed-logging-design.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
xfs.txt	xfs: remove obsolete osyncisosync mount option	2010-07-26 13:16:51 -05:00
xip.txt	DOC: update xip method info	2008-11-12 17:17:17 -08:00