KAMEZAWA Hiroyuki 887032670d cgroup avoid permanent sleep at rmdir ... After commit ec64f51545 ("cgroup: fix frequent -EBUSY at rmdir"), cgroup's rmdir (especially against memcg) doesn't return -EBUSY by temporary ref counts. That commit expects all refs after pre_destroy() is temporary but...it wasn't. Then, rmdir can wait permanently. This patch tries to fix that and change followings. - set CGRP_WAIT_ON_RMDIR flag before pre_destroy(). - clear CGRP_WAIT_ON_RMDIR flag when the subsys finds racy case. if there are sleeping ones, wakes them up. - rmdir() sleeps only when CGRP_WAIT_ON_RMDIR flag is set. Tested-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Reported-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Reviewed-by: Paul Menage <menage@google.com> Acked-by: Balbir Sigh <balbir@linux.vnet.ibm.com> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-07-29 19:10:35 -07:00
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acpi	Merge branch 'bjorn-notify' into release	2009-06-24 01:22:20 -04:00
asm-generic	mm: Pass virtual address to [__]p{te,ud,md}_free_tlb()	2009-07-27 12:10:38 -07:00
crypto
drm	Merge branch 'drm-radeon-kms' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6	2009-07-29 12:31:59 -07:00
keys
linux	cgroup avoid permanent sleep at rmdir	2009-07-29 19:10:35 -07:00
math-emu
media	V4L/DVB (12283): gspca - sn9c20x: New subdriver for sn9c201 and sn9c202 bridges.	2009-07-24 14:03:30 -03:00
mtd	Kill jffs2-user.h	2009-06-05 17:31:38 +01:00
net	NET: ROSE: Don't use static buffer.	2009-07-26 19:11:14 -07:00
pcmcia
rdma
rxrpc
scsi	sd, sr: fix Driver 'sd' needs updating message	2009-06-21 12:01:27 -05:00
sound	Merge branch 'topic/pcm-jiffies-check' into for-linus	2009-06-10 07:26:41 +02:00
trace	Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-07-14 18:34:32 -07:00
video	fbdev: s1d13xxxfb: add accelerated bitblt functions	2009-06-16 19:48:00 -07:00
xen
Kbuild	[SCSI] FC Pass Thru support	2009-06-12 14:20:05 -05:00