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| author |   David Woodhouse <dwmw2@infradead.org> | 2007-06-27 14:10:09 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-06-28 11:38:30 -0700 |
| commit | edd5cd4a9424f22b0fa08bef5e299d41befd5622 (patch) | |
| tree | dba461b19b066c862a2c4e443b2deb9443bc78c5 /include/asm-powerpc | |
| parent | serial: clear proper MPSC interrupt cause bits (diff) | |
| download | linux-dev-edd5cd4a9424f22b0fa08bef5e299d41befd5622.tar.xz linux-dev-edd5cd4a9424f22b0fa08bef5e299d41befd5622.zip | |
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>
Diffstat (limited to 'include/asm-powerpc')
| -rw-r--r-- | include/asm-powerpc/systbl.h | 1 | ||||
| -rw-r--r-- | include/asm-powerpc/unistd.h | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/asm-powerpc/systbl.h b/include/asm-powerpc/systbl.h index 700ca5928741..1cc3f9cb6f4e 100644 --- a/include/asm-powerpc/systbl.h +++ b/include/asm-powerpc/systbl.h @@ -311,3 +311,4 @@ COMPAT_SYS_SPU(utimensat) COMPAT_SYS_SPU(signalfd) COMPAT_SYS_SPU(timerfd) SYSCALL_SPU(eventfd) +COMPAT_SYS_SPU(sync_file_range2) diff --git a/include/asm-powerpc/unistd.h b/include/asm-powerpc/unistd.h index e3c28dc31abf..f71c6061f1ec 100644 --- a/include/asm-powerpc/unistd.h +++ b/include/asm-powerpc/unistd.h @@ -330,10 +330,11 @@ #define __NR_signalfd 305 #define __NR_timerfd 306 #define __NR_eventfd 307 +#define __NR_sync_file_range2 308 #ifdef __KERNEL__ -#define __NR_syscalls 308 +#define __NR_syscalls 309 #define __NR__exit __NR_exit #define NR_syscalls __NR_syscalls |