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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-19 17:38:31 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:16:09 +0200
commit36028d5dd71175c332ab634e089e16dbdfe3812b (patch)
treed25084dfe2fe7c0a070cad40333a365af076695c /arch/parisc
parentdf260e21e6cd5d2dfc1fe9b6a3bbf747e72b3bed (diff)
downloadlinux-36028d5dd71175c332ab634e089e16dbdfe3812b.tar.bz2
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/parisc')
-rw-r--r--arch/parisc/kernel/sys_parisc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index 3377a00163c3..4f47e8379854 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -333,13 +333,13 @@ asmlinkage long parisc_ftruncate64(unsigned int fd,
asmlinkage ssize_t parisc_pread64(unsigned int fd, char __user *buf, size_t count,
unsigned int high, unsigned int low)
{
- return sys_pread64(fd, buf, count, (loff_t)high << 32 | low);
+ return ksys_pread64(fd, buf, count, (loff_t)high << 32 | low);
}
asmlinkage ssize_t parisc_pwrite64(unsigned int fd, const char __user *buf,
size_t count, unsigned int high, unsigned int low)
{
- return sys_pwrite64(fd, buf, count, (loff_t)high << 32 | low);
+ return ksys_pwrite64(fd, buf, count, (loff_t)high << 32 | low);
}
asmlinkage ssize_t parisc_readahead(int fd, unsigned int high, unsigned int low,