| commit | ea441d1104cf1efb471fa81bc91e9fd1e6ae29fd | [log] [tgz] |
|---|---|---|
| author | Al Viro <viro@zeniv.linux.org.uk> | Wed Nov 16 21:43:59 2011 -0500 |
| committer | Al Viro <viro@zeniv.linux.org.uk> | Wed Nov 16 22:00:34 2011 -0500 |
| tree | 32b7c4f7c78af47936a604e3f4e13e8e61f834a0 | |
| parent | c13344958780b4046305ee6235d686c846535529 [diff] |
new helper: mount_subtree() 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: Al Viro <viro@zeniv.linux.org.uk>