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David Hildenbrand b3c395ef55 mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 
In general, non-atomic variants of user access functions must not sleep
if pagefaults are disabled.

Let's update all relevant comments in uaccess code. This also reflects
the might_sleep() checks in might_fault().

Reviewed-and-tested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: David.Laight@ACULAB.COM
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: airlied@linux.ie
Cc: akpm@linux-foundation.org
Cc: benh@kernel.crashing.org
Cc: bigeasy@linutronix.de
Cc: borntraeger@de.ibm.com
Cc: daniel.vetter@intel.com
Cc: heiko.carstens@de.ibm.com
Cc: herbert@gondor.apana.org.au
Cc: hocko@suse.cz
Cc: hughd@google.com
Cc: mst@redhat.com
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: schwidefsky@de.ibm.com
Cc: yang.shi@windriver.com
Link: http://lkml.kernel.org/r/1431359540-32227-4-git-send-email-dahi@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-05-19 08:39:14 +02:00
..
alpha alpha: forward declare struct pt_regs in processor.h 2015-04-17 09:03:53 -04:00
arc ARC: inline cache flush toggle helpers 2015-05-11 11:21:41 +05:30
arm ARM: SoC fixes for 4.1-rc3 2015-05-16 15:33:25 -07:00
arm64 ARM: SoC fixes for 4.1-rc3 2015-05-16 15:33:25 -07:00
avr32 mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 2015-05-19 08:39:14 +02:00
blackfin blackfin updates for Linux 4.1 2015-04-24 07:58:07 -07:00
c6x C6X Fixes for v4.1 2015-04-16 18:48:55 -04:00
cris CRIS changes for 4.1 2015-04-26 13:31:05 -07:00
frv Devicetree updates for 4.1: 2015-04-24 08:46:18 -07:00
hexagon mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 2015-05-19 08:39:14 +02:00
ia64 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-26 17:22:07 -07:00
m32r mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 2015-05-19 08:39:14 +02:00
m68k sched/preempt: Merge preempt_mask.h into preempt.h 2015-05-19 08:39:11 +02:00
metag Metag architecture changes for v4.1 2015-04-24 07:56:50 -07:00
microblaze mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 2015-05-19 08:39:14 +02:00
mips mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 2015-05-19 08:39:14 +02:00
mn10300 Devicetree updates for 4.1: 2015-04-24 08:46:18 -07:00
nios2 nios2 update for v4.1-rc1 2015-04-24 07:59:07 -07:00
openrisc Merge branch 'akpm' (patches from Andrew) 2015-04-15 16:39:15 -07:00
parisc parisc,metag: Fix crashes due to stack randomization on stack-grows-upwards architectures 2015-05-12 22:03:44 +02:00
powerpc powerpc/powernv: Restore non-volatile CRs after nap 2015-05-01 16:55:11 +10:00
s390 mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 2015-05-19 08:39:14 +02:00
score mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 2015-05-19 08:39:14 +02:00
sh Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2015-04-24 09:49:37 -07:00
sparc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 2015-04-21 23:21:34 -07:00
tile mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 2015-05-19 08:39:14 +02:00
um Merge branch 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc 2015-04-15 13:53:55 -07:00
unicore32 Merge branch 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc 2015-04-15 13:53:55 -07:00
x86 mm/uaccess, mm/fault: Clarify that uaccess may only sleep if pagefaults are enabled 2015-05-19 08:39:14 +02:00
xtensa Xtensa changes and fixes for 4.1 2015-04-17 15:32:30 -04:00
.gitignore
Kconfig powerpc updates for 4.1 2015-04-16 13:53:32 -05:00