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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-19 19:38:31 +0300
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 21:16:09 +0300
commit36028d5dd71175c332ab634e089e16dbdfe3812b (patch)
treed25084dfe2fe7c0a070cad40333a365af076695c /arch/mips/kernel/linux32.c
parentdf260e21e6cd5d2dfc1fe9b6a3bbf747e72b3bed (diff)
downloadlinux-36028d5dd71175c332ab634e089e16dbdfe3812b.tar.xz
fs: add ksys_p{read,write}64() helpers; remove in-kernel calls to syscalls
Using the ksys_p{read,write}64() wrappers allows us to get rid of in-kernel calls to the sys_pread64() and sys_pwrite64() syscalls. 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 sys_p{read,write}64(). 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: Al Viro <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'arch/mips/kernel/linux32.c')
-rw-r--r--arch/mips/kernel/linux32.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 58e7dd27f106..91e85e2f8aa5 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -105,13 +105,13 @@ SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high,
SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count,
unsigned long, unused, unsigned long, a4, unsigned long, a5)
{
- return sys_pread64(fd, buf, count, merge_64(a4, a5));
+ return ksys_pread64(fd, buf, count, merge_64(a4, a5));
}
SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf,
size_t, count, u32, unused, u64, a4, u64, a5)
{
- return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
+ return ksys_pwrite64(fd, buf, count, merge_64(a4, a5));
}
SYSCALL_DEFINE1(32_personality, unsigned long, personality)