Hi Jens, After merging the block tree, today's linux-next build (x86_64 allmodconfig) produced this warning: drivers/md/md.c: In function 'mddev_put': drivers/md/md.c:543:1: warning: the frame size of 2080 bytes is larger than 2048 bytes [-Wframe-larger-than=] } ^ This is caused because CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL is now switched on. Hopefully Kees (cc'd) can procide some guidance on how to eliminate this warning. -- Cheers, Stephen Rothwell