init: add an init_mount helper
Like do_mount, but takes a kernel pointer for the destination path.
Switch over the mounts in the init code and devtmpfs to it, which
just happen to work due to the implicit set_fs(KERNEL_DS) during early
init right now.
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/init/do_mounts.c b/init/do_mounts.c
index a7f22cf..83db87b 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -395,16 +395,16 @@ static int __init do_mount_root(const char *name, const char *fs,
int ret;
if (data) {
- /* do_mount() requires a full page as fifth argument */
+ /* init_mount() requires a full page as fifth argument */
p = alloc_page(GFP_KERNEL);
if (!p)
return -ENOMEM;
data_page = page_address(p);
- /* zero-pad. do_mount() will make sure it's terminated */
+ /* zero-pad. init_mount() will make sure it's terminated */
strncpy(data_page, data, PAGE_SIZE);
}
- ret = do_mount(name, "/root", fs, flags, data_page);
+ ret = init_mount(name, "/root", fs, flags, data_page);
if (ret)
goto out;
@@ -628,7 +628,7 @@ void __init prepare_namespace(void)
mount_root();
out:
devtmpfs_mount();
- do_mount(".", "/", NULL, MS_MOVE, NULL);
+ init_mount(".", "/", NULL, MS_MOVE, NULL);
ksys_chroot(".");
}