summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kernel
diff options
context:
space:
mode:
authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-11 11:34:45 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:16:10 +0200
commit9d5b7c956b09daab955fb2a42447d5d89ff15093 (patch)
treef2644590e0952ce528fab32226f96557ad91b459 /arch/powerpc/kernel
parentedf292c76b884a499cc60ad5cdada2663cc39a2f (diff)
downloadlinux-9d5b7c956b09daab955fb2a42447d5d89ff15093.tar.bz2
mm: add ksys_fadvise64_64() helper; remove in-kernel call to sys_fadvise64_64()
Using the ksys_fadvise64_64() helper allows us to avoid the in-kernel calls to the sys_fadvise64_64() syscall. The ksys_ prefix denotes that this function is meant as a drop-in replacement for the syscall. In particular, it uses the same calling convention as ksys_fadvise64_64(). Some compat stubs called sys_fadvise64(), which then just passed through the arguments to sys_fadvise64_64(). Get rid of this indirection, and call ksys_fadvise64_64() directly. This patch is part of a series which removes in-kernel calls to syscalls. On this basis, the syscall entry path can be streamlined. For details, see http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-mm@kvack.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/sys_ppc32.c4
-rw-r--r--arch/powerpc/kernel/syscalls.c4
2 files changed, 4 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index 68f11e1065f8..0b95fa13307f 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -113,8 +113,8 @@ asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long h
long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
size_t len, int advice)
{
- return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
- advice);
+ return ksys_fadvise64_64(fd, (u64)offset_high << 32 | offset_low, len,
+ advice);
}
asmlinkage long compat_sys_sync_file_range2(int fd, unsigned int flags,
diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c
index a877bf8269fe..ecb981eea74b 100644
--- a/arch/powerpc/kernel/syscalls.c
+++ b/arch/powerpc/kernel/syscalls.c
@@ -119,8 +119,8 @@ long ppc64_personality(unsigned long personality)
long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
u32 len_high, u32 len_low)
{
- return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low,
- (u64)len_high << 32 | len_low, advice);
+ return ksys_fadvise64_64(fd, (u64)offset_high << 32 | offset_low,
+ (u64)len_high << 32 | len_low, advice);
}
long sys_switch_endian(void)