David Rientjes 022a41db8a mm, show_mem: suppress page counts in non-blockable contexts ... commit 4b59e6c473 upstream. On large systems with a lot of memory, walking all RAM to determine page types may take a half second or even more. In non-blockable contexts, the page allocator will emit a page allocation failure warning unless __GFP_NOWARN is specified. In such contexts, irqs are typically disabled and such a lengthy delay may even result in NMI watchdog timeouts. To fix this, suppress the page walk in such contexts when printing the page allocation failure warning. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mgorman@suse.de> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Dave Hansen <dave@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Xishi Qiu <qiuxishi@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-10-13 15:42:49 -07:00
..
boot	Kbuild: centralize MKIMAGE and cmd_uimage definitions	2012-03-26 15:49:20 +02:00
configs	unicore32: add KBUILD_DEFCONFIG with unicore32_defconfig (old debug_defconfig)	2011-06-09 16:24:42 +08:00
include	Merge branch 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping	2012-04-04 17:13:43 -07:00
kernel	Disintegrate and delete asm/system.h	2012-03-28 15:58:21 -07:00
lib	unicore32: fix build error for find bitops	2011-11-15 17:13:14 +08:00
mm	mm, show_mem: suppress page counts in non-blockable contexts	2013-10-13 15:42:49 -07:00
.gitignore
Kconfig	lib: move GENERIC_IOMAP to lib/Kconfig	2011-11-24 22:21:19 +02:00
Kconfig.debug	unicore32: drop unused Kconfig symbols	2011-11-15 17:13:18 +08:00
Makefile	unicore32: using generic-y format for one line asm-generic files	2011-06-09 16:29:52 +08:00