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| author | Rob Landley <rob@landley.net> | 2013-09-11 14:26:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-11 15:59:38 -0700 |
| commit | 6e19eded3684dc184181093af3bff2ff440f5b53 (patch) | |
| tree | f88bf08f0897703bb0d07020e4f921494bd7a434 /init | |
| parent | 16203a7a9422315bc929461503e3a046459ea5ff (diff) | |
| download | linux-exynos-6e19eded3684dc184181093af3bff2ff440f5b53.tar.gz linux-exynos-6e19eded3684dc184181093af3bff2ff440f5b53.tar.bz2 linux-exynos-6e19eded3684dc184181093af3bff2ff440f5b53.zip | |
initmpfs: use initramfs if rootfstype= or root= specified
Command line option rootfstype=ramfs to obtain old initramfs behavior, and
use ramfs instead of tmpfs for stub when root= defined (for cosmetic
reasons).
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Rob Landley <rob@landley.net>
Cc: Jeff Layton <jlayton@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jim Cromie <jim.cromie@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init')
| -rw-r--r-- | init/do_mounts.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/init/do_mounts.c b/init/do_mounts.c index e27908b949d4..a51cddc2ff8c 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -591,16 +591,20 @@ out: sys_chroot("."); } +static bool is_tmpfs; static struct dentry *rootfs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { static unsigned long once; + void *fill = ramfs_fill_super; if (test_and_set_bit(0, &once)) return ERR_PTR(-ENODEV); - return mount_nodev(fs_type, flags, data, - IS_ENABLED(CONFIG_TMPFS) ? shmem_fill_super : ramfs_fill_super); + if (IS_ENABLED(CONFIG_TMPFS) && is_tmpfs) + fill = shmem_fill_super; + + return mount_nodev(fs_type, flags, data, fill); } static struct file_system_type rootfs_fs_type = { @@ -616,10 +620,13 @@ int __init init_rootfs(void) if (err) return err; - if (IS_ENABLED(CONFIG_TMPFS)) + if (IS_ENABLED(CONFIG_TMPFS) && !saved_root_name[0] && + (!root_fs_names || strstr(root_fs_names, "tmpfs"))) { err = shmem_init(); - else + is_tmpfs = true; + } else { err = init_ramfs_fs(); + } if (err) unregister_filesystem(&rootfs_fs_type); |