Hi Andrew, After merging the akpm tree, today's linux-next build (x86_64 allmodconfig) produced this warning:
In file included from include/linux/printk.h:6:0, from include/linux/kernel.h:13, from include/linux/list.h:8, from mm/z3fold.c:26: mm/z3fold.c: In function 'init_z3fold': include/linux/kern_levels.h:4:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long unsigned int' [-Wformat=] #define KERN_SOH "\001" /* ASCII Start Of Header */ ^ include/linux/kern_levels.h:10:18: note: in expansion of macro 'KERN_SOH' #define KERN_ERR KERN_SOH "3" /* error conditions */ ^ include/linux/printk.h:292:9: note: in expansion of macro 'KERN_ERR' printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) ^ mm/z3fold.c:887:3: note: in expansion of macro 'pr_err' pr_err("z3fold: z3fold_header size (%d) is bigger than " ^ Introduced by patch "z3fold: don't fail kernel build if z3fold_header is too big" -- Cheers, Stephen Rothwell