From: Jeff Layton <jlayton@redhat.com>
Date: Tue, 26 Jul 2011 17:33:16 +0000 (-0400)
Subject: vfs: document locking requirements for d_move, __d_move and d_materialise_unique
X-Git-Tag: v3.1-rc1~147^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c46c887744b330795eba55fdb96343c36d481765;p=pandora-kernel.git

vfs: document locking requirements for d_move, __d_move and d_materialise_unique

Adding a comment to d_materialise_unique per Al's request...

d_move and __d_move have some pretty substantial locking requirements,
but they are not clearly documented. Add some comments spelling them
out. Also, document the requirement for the i_mutex of the parent in
d_materialise_unique.

Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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