On Wed, 10 Sep 2014, Xiubo Li wrote: > C mm/compaction.o > mm/compaction.c: In function isolate_freepages_block: > mm/compaction.c:364:37: warning: flags may be used uninitialized in > this function [-Wmaybe-uninitialized] > && compact_unlock_should_abort(&cc->zone->lock, flags, > ^ > In file included from include/linux/irqflags.h:15:0, > from ./arch/arm/include/asm/bitops.h:27, > from include/linux/bitops.h:33, > from include/linux/kernel.h:10, > from include/linux/list.h:8, > from include/linux/preempt.h:10, > from include/linux/spinlock.h:50, > from include/linux/swap.h:4, > from mm/compaction.c:10: > mm/compaction.c: In function isolate_migratepages_block: > ./arch/arm/include/asm/irqflags.h:152:2: warning: flags may be used > uninitialized in this function [-Wmaybe-uninitialized] > asm volatile( > ^ > mm/compaction.c:576:16: note: flags as declared here > unsigned long flags; > ^ > > Signed-off-by: Xiubo Li <Li.Xiubo@xxxxxxxxxxxxx> Arnd Bergmann already sent a patch for this to use uninitialized_var() privately but it didn't get cc'd to any mailing list, sorry. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>