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author | David Woodhouse <dwmw2@infradead.org> | 2007-06-27 14:10:09 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-06-28 11:38:30 -0700 |
commit | edd5cd4a9424f22b0fa08bef5e299d41befd5622 (patch) | |
tree | dba461b19b066c862a2c4e443b2deb9443bc78c5 /include/linux/syscalls.h | |
parent | 2f4d4da8f82c2598b8713f4a01f360f3751d90be (diff) | |
download | op-kernel-dev-edd5cd4a9424f22b0fa08bef5e299d41befd5622.zip op-kernel-dev-edd5cd4a9424f22b0fa08bef5e299d41befd5622.tar.gz |
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/linux/syscalls.h')
-rw-r--r-- | include/linux/syscalls.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index b02070e..83d0ec1 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -598,6 +598,8 @@ asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags); asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes, unsigned int flags); +asmlinkage long sys_sync_file_range2(int fd, unsigned int flags, + loff_t offset, loff_t nbytes); asmlinkage long sys_get_robust_list(int pid, struct robust_list_head __user * __user *head_ptr, size_t __user *len_ptr); |