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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2019-11-27 22:24:14 +0300 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2019-12-12 16:50:03 +0300 |
| commit | d4440aac83d12f87df9bcc51e992b9c28c7f4fa5 (patch) | |
| tree | 0069801b93c9061d8b1ecc1a271c5c4168deab8e /init | |
| parent | 5e787dbf659fe77d56215be74044f85e01b3920f (diff) | |
| download | linux-d4440aac83d12f87df9bcc51e992b9c28c7f4fa5.tar.xz | |
initrd: use do_mount() instead of ksys_mount()
All three calls to ksys_mount() in initrd-related kernel code can
be switched over to do_mount():
- the first and third arguments are const strings in the kernel,
and do not need to be copied over from userspace;
- the fifth argument is NULL, and therefore no page needs to be,
copied over from userspace;
- the second and fourth argument are passed through anyway.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'init')
| -rw-r--r-- | init/do_mounts_initrd.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c index a9c6cc56f505..3bf7b74153ab 100644 --- a/init/do_mounts_initrd.c +++ b/init/do_mounts_initrd.c @@ -54,7 +54,7 @@ static int init_linuxrc(struct subprocess_info *info, struct cred *new) ksys_dup(0); /* move initrd over / and chdir/chroot in initrd root */ ksys_chdir("/root"); - ksys_mount(".", "/", NULL, MS_MOVE, NULL); + do_mount(".", "/", NULL, MS_MOVE, NULL); ksys_chroot("."); ksys_setsid(); return 0; @@ -89,7 +89,7 @@ static void __init handle_initrd(void) current->flags &= ~PF_FREEZER_SKIP; /* move initrd to rootfs' /old */ - ksys_mount("..", ".", NULL, MS_MOVE, NULL); + do_mount("..", ".", NULL, MS_MOVE, NULL); /* switch root and cwd back to / of rootfs */ ksys_chroot(".."); @@ -103,7 +103,7 @@ static void __init handle_initrd(void) mount_root(); printk(KERN_NOTICE "Trying to move old root to /initrd ... "); - error = ksys_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL); + error = do_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL); if (!error) printk("okay\n"); else { |