diff options
Diffstat (limited to 'fs/autofs4')
| -rw-r--r-- | fs/autofs4/dev-ioctl.c | 5 | ||||
| -rw-r--r-- | fs/autofs4/expire.c | 19 |
2 files changed, 18 insertions, 6 deletions
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c index 625abf5422e2..33bf8cbfd051 100644 --- a/fs/autofs4/dev-ioctl.c +++ b/fs/autofs4/dev-ioctl.c @@ -128,9 +128,10 @@ static inline void free_dev_ioctl(struct autofs_dev_ioctl *param) */ static int validate_dev_ioctl(int cmd, struct autofs_dev_ioctl *param) { - int err = -EINVAL; + int err; - if (check_dev_ioctl_version(cmd, param)) { + err = check_dev_ioctl_version(cmd, param); + if (err) { AUTOFS_WARN("invalid device control module version " "supplied for cmd(0x%08x)", cmd); goto out; diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index cde2f8e8935a..4b6fb3f628c0 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -56,12 +56,23 @@ static int autofs4_mount_busy(struct vfsmount *mnt, struct dentry *dentry) mntget(mnt); dget(dentry); - if (!autofs4_follow_mount(&mnt, &dentry)) + if (!follow_down(&mnt, &dentry)) goto done; - /* This is an autofs submount, we can't expire it */ - if (is_autofs4_dentry(dentry)) - goto done; + if (is_autofs4_dentry(dentry)) { + struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb); + + /* This is an autofs submount, we can't expire it */ + if (sbi->type == AUTOFS_TYPE_INDIRECT) + goto done; + + /* + * Otherwise it's an offset mount and we need to check + * if we can umount its mount, if there is one. + */ + if (!d_mountpoint(dentry)) + goto done; + } /* Update the expiry counter if fs is busy */ if (!may_umount_tree(mnt)) { |