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Thorsten Knabe 2a2361228c um: ubd: Fix for processes stuck in D state forever 
Starting with Linux 3.12 processes get stuck in D state forever in
UserModeLinux under sync heavy workloads. This bug was introduced by
commit 805f11a0d5 (um: ubd: Add REQ_FLUSH suppport).
Fix bug by adding a check if FLUSH request was successfully submitted to
the I/O thread and keeping the FLUSH request on the request queue on
submission failures.

Fixes: 805f11a0d5 (um: ubd: Add REQ_FLUSH suppport)
Signed-off-by: Thorsten Knabe <linux@thorsten-knabe.de>
Cc: stable@kernel.org # >= 3.12
Signed-off-by: Richard Weinberger <richard@nod.at>
 		2014-10-13 21:45:55 +02:00
..
alpha alpha: use Kbuild logic to include <asm-generic/sections.h> 2014-10-09 22:26:03 -04:00
arc
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arm Merge branch 'akpm' (fixes from Andrew Morton) 2014-10-09 22:26:14 -04:00
arm64 Merge branch 'akpm' (fixes from Andrew Morton) 2014-10-09 22:26:14 -04:00
avr32
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blackfin Merge branch 'for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2014-10-10 07:23:11 -04:00
c6x
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cris cris: use Kbuild logic to include <asm-generic/sections.h> 2014-10-09 22:25:45 -04:00
frv frv: remove deprecated IRQF_DISABLED 2014-10-09 22:26:03 -04:00
hexagon
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ia64 PCI changes for the v3.18 merge window: 2014-10-09 15:03:49 -04:00
m32r m32r: remove deprecated IRQF_DISABLED 2014-10-09 22:25:46 -04:00
m68k m68k: call find_vma with the mmap_sem held in sys_cacheflush() 2014-10-09 22:26:02 -04:00
metag
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microblaze Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-09 06:30:57 -04:00
mips Merge branch 'akpm' (fixes from Andrew Morton) 2014-10-09 22:26:14 -04:00
mn10300 mn10300: use Kbuild logic to include <asm-generic/sections.h> 2014-10-09 22:25:45 -04:00
openrisc Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-09 06:42:04 -04:00
parisc Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-09 06:30:57 -04:00
powerpc Merge branch 'akpm' (fixes from Andrew Morton) 2014-10-09 22:26:14 -04:00
s390 nosave: consolidate __nosave_{begin,end} in <asm/sections.h> 2014-10-09 22:26:04 -04:00
score score: use Kbuild logic to include <asm-generic/sections.h> 2014-10-09 22:25:46 -04:00
sh Merge branch 'akpm' (fixes from Andrew Morton) 2014-10-09 22:26:14 -04:00
sparc nosave: consolidate __nosave_{begin,end} in <asm/sections.h> 2014-10-09 22:26:04 -04:00
tile Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-09 06:30:57 -04:00
um um: ubd: Fix for processes stuck in D state forever 2014-10-13 21:45:55 +02:00
unicore32 nosave: consolidate __nosave_{begin,end} in <asm/sections.h> 2014-10-09 22:26:04 -04:00
x86 um: remove csum_partial_copy_generic_i386 to clean up exception table 2014-10-13 17:15:02 +02:00
xtensa Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-09 06:30:57 -04:00
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