diff options
Diffstat (limited to 'init/do_mounts.c')
| -rw-r--r-- | init/do_mounts.c | 45 |
1 files changed, 37 insertions, 8 deletions
diff --git a/init/do_mounts.c b/init/do_mounts.c index 0f6e1d985a3b..2974c8b3b351 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -325,17 +325,19 @@ static void __init get_fs_names(char *page) static int __init do_mount_root(char *name, char *fs, int flags, void *data) { + struct super_block *s; int err = sys_mount(name, "/root", fs, flags, data); if (err) return err; sys_chdir((const char __user __force *)"/root"); - ROOT_DEV = current->fs->pwd.mnt->mnt_sb->s_dev; + s = current->fs->pwd.dentry->d_sb; + ROOT_DEV = s->s_dev; printk(KERN_INFO "VFS: Mounted root (%s filesystem)%s on device %u:%u.\n", - current->fs->pwd.mnt->mnt_sb->s_type->name, - current->fs->pwd.mnt->mnt_sb->s_flags & MS_RDONLY ? - " readonly" : "", MAJOR(ROOT_DEV), MINOR(ROOT_DEV)); + s->s_type->name, + s->s_flags & MS_RDONLY ? " readonly" : "", + MAJOR(ROOT_DEV), MINOR(ROOT_DEV)); return 0; } @@ -398,15 +400,42 @@ out: } #ifdef CONFIG_ROOT_NFS + +#define NFSROOT_TIMEOUT_MIN 5 +#define NFSROOT_TIMEOUT_MAX 30 +#define NFSROOT_RETRY_MAX 5 + static int __init mount_nfs_root(void) { char *root_dev, *root_data; + unsigned int timeout; + int try, err; - if (nfs_root_data(&root_dev, &root_data) != 0) - return 0; - if (do_mount_root(root_dev, "nfs", root_mountflags, root_data) != 0) + err = nfs_root_data(&root_dev, &root_data); + if (err != 0) return 0; - return 1; + + /* + * The server or network may not be ready, so try several + * times. Stop after a few tries in case the client wants + * to fall back to other boot methods. + */ + timeout = NFSROOT_TIMEOUT_MIN; + for (try = 1; ; try++) { + err = do_mount_root(root_dev, "nfs", + root_mountflags, root_data); + if (err == 0) + return 1; + if (try > NFSROOT_RETRY_MAX) + break; + + /* Wait, in case the server refused us immediately */ + ssleep(timeout); + timeout <<= 1; + if (timeout > NFSROOT_TIMEOUT_MAX) + timeout = NFSROOT_TIMEOUT_MAX; + } + return 0; } #endif |