From edd5cd4a9424f22b0fa08bef5e299d41befd5622 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Wed, 27 Jun 2007 14:10:09 -0700 Subject: Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM Not all the world is an i386. Many architectures need 64-bit arguments to be aligned in suitable pairs of registers, and the original sys_sync_file_range(int, loff_t, loff_t, int) was therefore wasting an argument register for padding after the first integer. Since we don't normally have more than 6 arguments for system calls, that left no room for the final argument on some architectures. Fix this by introducing sys_sync_file_range2(int, int, loff_t, loff_t) which all fits nicely. In fact, ARM already had that, but called it sys_arm_sync_file_range. Move it to fs/sync.c and rename it, then implement the needed compatibility routine. And stop the missing syscall check from bitching about the absence of sys_sync_file_range() if we've implemented sys_sync_file_range2() instead. Tested on PPC32 and with 32-bit and 64-bit userspace on PPC64. Signed-off-by: David Woodhouse Acked-by: Russell King Cc: Arnd Bergmann Cc: Paul Mackerras Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-arm/unistd.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-arm') diff --git a/include/asm-arm/unistd.h b/include/asm-arm/unistd.h index 250d7f145ac..bfdbebebdc1 100644 --- a/include/asm-arm/unistd.h +++ b/include/asm-arm/unistd.h @@ -367,6 +367,7 @@ #define __NR_get_robust_list (__NR_SYSCALL_BASE+339) #define __NR_splice (__NR_SYSCALL_BASE+340) #define __NR_arm_sync_file_range (__NR_SYSCALL_BASE+341) +#define __NR_sync_file_range2 __NR_arm_sync_file_range #define __NR_tee (__NR_SYSCALL_BASE+342) #define __NR_vmsplice (__NR_SYSCALL_BASE+343) #define __NR_move_pages (__NR_SYSCALL_BASE+344) -- cgit v1.2.3