When working on the RISC-V port I noticed that F_SETLK64 was being defined on our 64-bit platform, despite our port being so new that we've only ever had the 64-bit file ops. Since there's not compat layer for these, this causes fcntl to bail out.
It turns out that one of the ways in with F_SETLK64 was being defined (there's some more in glibc, but that's a whole different story... :)) is the result of CONFIG_64BIT showing up in this user-visible header. <asm-generic/bitsperlong.h> confirms this isn't sane, so I replaced it with a __BITS_PER_LONG check. Signed-off-by: Palmer Dabbelt <pal...@dabbelt.com> Reviewed-by: Andrew Waterman <water...@eecs.berkeley.edu> Reviewed-by: Albert Ou <a...@eecs.berkeley.edu> Reviewed-by: Arnd Bergmann <a...@arndb.de> --- include/uapi/asm-generic/fcntl.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h index e063eff..14a5c82 100644 --- a/include/uapi/asm-generic/fcntl.h +++ b/include/uapi/asm-generic/fcntl.h @@ -1,6 +1,7 @@ #ifndef _ASM_GENERIC_FCNTL_H #define _ASM_GENERIC_FCNTL_H +#include <asm/bitsperlong.h> #include <linux/types.h> /* @@ -115,7 +116,7 @@ #define F_GETSIG 11 /* for sockets. */ #endif -#ifndef CONFIG_64BIT +#if (__BITS_PER_LONG == 32) #ifndef F_GETLK64 #define F_GETLK64 12 /* using 'struct flock64' */ #define F_SETLK64 13 -- 2.4.10 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/