fs: add ksys_getdents64() helper; remove in-kernel calls to sys_getdents64()
Using this helper allows us to avoid the in-kernel calls to the
sys_getdents64() 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 sys_getdents64().
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: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
diff --git a/init/initramfs.c b/init/initramfs.c
index 5f2ff1d..13643c4 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -579,7 +579,7 @@
}
dirp = buf;
- num = sys_getdents64(fd, dirp, BUF_SIZE);
+ num = ksys_getdents64(fd, dirp, BUF_SIZE);
while (num > 0) {
while (num > 0) {
struct kstat st;
@@ -599,7 +599,7 @@
}
dirp = buf;
memset(buf, 0, BUF_SIZE);
- num = sys_getdents64(fd, dirp, BUF_SIZE);
+ num = ksys_getdents64(fd, dirp, BUF_SIZE);
}
ksys_close(fd);