]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM
authorDavid Woodhouse <dwmw2@infradead.org>
Wed, 27 Jun 2007 21:10:09 +0000 (14:10 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Thu, 28 Jun 2007 18:38:30 +0000 (11:38 -0700)
commitedd5cd4a9424f22b0fa08bef5e299d41befd5622
treedba461b19b066c862a2c4e443b2deb9443bc78c5
parent2f4d4da8f82c2598b8713f4a01f360f3751d90be
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 <dwmw2@infradead.org>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/arm/kernel/calls.S
arch/arm/kernel/sys_arm.c
arch/powerpc/kernel/sys_ppc32.c
fs/sync.c
include/asm-arm/unistd.h
include/asm-powerpc/systbl.h
include/asm-powerpc/unistd.h
include/linux/syscalls.h
scripts/checksyscalls.sh