Michal Hocko f91e8d6d76 sparc: clarify __GFP_NOFAIL allocation ... Commit 920c3ed741 ("[SPARC64]: Add basic infrastructure for MD add/remove notification") has added __GFP_NOFAIL for the allocation request but it hasn't mentioned why is this strict requirement really needed. The code was handling an allocation failure and propagated it properly up the callchain so it is not clear why it is needed. Dave has clarified the intention when I tried to remove the flag as not being necessary: : It is a serious failure. : : If we miss an MDESC update due to this allocation failure, the update : is not an event which gets retransmitted so we will lose the updated : machine description forever. : : We really need this allocation to succeed. So add a comment to clarify the nofail flag and get rid of the failure check because __GFP_NOFAIL allocation doesn't fail. Signed-off-by: Michal Hocko <mhocko@suse.cz> Cc: David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Dave Chinner <david@fromorbit.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Mel Gorman <mgorman@suse.de> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: "David S. Miller" <davem@davemloft.net> Cc: Vipul Pandya <vipul@chelsio.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-04-14 16:49:04 -07:00
..
boot	sparc: Add "install" target	2014-08-04 20:45:59 -07:00
configs	sparc: Set CONFIG_NET=y in defconfigs	2014-09-24 13:38:30 -04:00
crypto	crypto: sparc64/md5 - fix module description	2015-01-13 22:30:48 +11:00
include	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-04-13 10:27:28 -07:00
kernel	sparc: clarify __GFP_NOFAIL allocation	2015-04-14 16:49:04 -07:00
lib	sparc64: Fix several bugs in memmove().	2015-03-23 09:22:10 -07:00
math-emu	arch/sparc/math-emu/math_32.c: drop stray break operator	2014-08-04 20:29:06 -07:00
mm	sparc: Fix /proc/kcore	2015-03-18 19:15:28 -07:00
net	module: remove mod arg from module_free, rename module_memfree().	2015-01-20 11:38:33 +10:30
oprofile
power	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc	2014-10-11 20:36:34 -04:00
prom	sparc64: Fix register corruption in top-most kernel stack frame during boot.	2014-10-24 09:52:49 -07:00
Kbuild	sparc64: Add SHA1 driver making use of the 'sha1' instruction.	2012-08-20 15:08:49 -07:00
Kconfig	sparc: expose number of page table levels	2015-04-14 16:49:02 -07:00
Kconfig.debug
Makefile	sparc: Add "install" target	2014-08-04 20:45:59 -07:00