tree 56384beb7863c1f338f2b66b509bf58eea5a99c2
parent c16fa4f2ad19908a47c63d8fa436a1178438c7e7
author Al Viro <viro@zeniv.linux.org.uk> 1328550327 -0500
committer Al Viro <viro@zeniv.linux.org.uk> 1332293372 -0400

vfs: check i_nlink limits in vfs_{mkdir,rename_dir,link}

New field of struct super_block - ->s_max_links.  Maximal allowed
value of ->i_nlink or 0; in the latter case all checks still need
to be done in ->link/->mkdir/->rename instances.  Note that this
limit applies both to directoris and to non-directories.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>