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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 13:34:45 +0300 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 21:16:10 +0300 |
| commit | 9d5b7c956b09daab955fb2a42447d5d89ff15093 (patch) | |
| tree | f2644590e0952ce528fab32226f96557ad91b459 /arch/sparc/kernel | |
| parent | edf292c76b884a499cc60ad5cdada2663cc39a2f (diff) | |
| download | linux-9d5b7c956b09daab955fb2a42447d5d89ff15093.tar.xz | |
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/sparc/kernel')
| -rw-r--r-- | arch/sparc/kernel/sys_sparc32.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c index 4ba62d676632..4da66aed50b4 100644 --- a/arch/sparc/kernel/sys_sparc32.c +++ b/arch/sparc/kernel/sys_sparc32.c @@ -225,7 +225,7 @@ long compat_sys_fadvise64(int fd, unsigned long offlo, compat_size_t len, int advice) { - return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); + return ksys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); } long compat_sys_fadvise64_64(int fd, @@ -233,10 +233,10 @@ long compat_sys_fadvise64_64(int fd, unsigned long lenhi, unsigned long lenlo, int advice) { - return sys_fadvise64_64(fd, - (offhi << 32) | offlo, - (lenhi << 32) | lenlo, - advice); + return ksys_fadvise64_64(fd, + (offhi << 32) | offlo, + (lenhi << 32) | lenlo, + advice); } long sys32_sync_file_range(unsigned int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, unsigned int flags) |