Messages in this thread Patch in this message | | | Date | Tue, 16 Jul 2013 16:45:39 -0700 (PDT) | From | Rob Landley <> | Subject | [PATCH 5/5] initmpfs v2: Use initramfs if rootfstype= or root= specified. |
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From: Rob Landley <rob@landley.net>
Command line option rootfstype=ramfs to obtain old initramfs behavior, and use ramfs instead of tmpfs for stub when root= defined (for cosmetic reasons).
Signed-off-by: Rob Landley <rob@landley.net> ---
init/do_mounts.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)
--- initold/init/do_mounts.c 2013-06-29 13:27:00.485256840 -0500 +++ initwork/init/do_mounts.c 2013-06-29 13:34:17.925275072 -0500 @@ -591,16 +591,20 @@ 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(1, &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 = { @@ -616,9 +620,12 @@ 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)
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