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    new helper: mount_subtree() · ea441d11
    Al Viro 提交于
    takes vfsmount and relative path, does lookup within that vfsmount
    (possibly triggering automounts) and returns the result as root
    of subtree suitable for return by ->mount() (i.e. a reference to
    dentry and an active reference to its superblock grabbed, superblock
    locked exclusive).
    
    btrfs and nfs switched to it instead of open-coding the sucker.
    Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
    ea441d11
super.c 77.2 KB