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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-11 13:34:40 +0300
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 21:15:48 +0300
commit3a18ef5c1b3935cb05888fc37964321f7bd6231d (patch)
tree2a20ac61be97ab384ecbf94b30a608f4b6c9162c /init
parent312db1aa1dc7bff133d95c92efcc5e42b57cefa6 (diff)
downloadlinux-3a18ef5c1b3935cb05888fc37964321f7bd6231d.tar.xz
fs: add ksys_umount() helper; remove in-kernel call to sys_umount()
Using this helper allows us to avoid the in-kernel call to the sys_umount() 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_umount(). In the near future, the only fs-external caller of ksys_umount() should be converted to call do_umount() directly. Then, ksys_umount() can be moved within sys_umount() again. 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>
Diffstat (limited to 'init')
-rw-r--r--init/do_mounts_initrd.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index 7868a6039fb4..1c4da8353332 100644
--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -105,7 +105,7 @@ static void __init handle_initrd(void)
else
printk("failed\n");
printk(KERN_NOTICE "Unmounting old root\n");
- sys_umount("/old", MNT_DETACH);
+ ksys_umount("/old", MNT_DETACH);
printk(KERN_NOTICE "Trying to free ramdisk memory ... ");
if (fd < 0) {
error = fd;