follow_dotdot(): be lazy about changing nd->path
Change nd->path only after the loop is done and only in case we hadn't
ended up finding ourselves in root. Same for NO_XDEV check.
That separates the "check how far back do we need to go through the
mount stack" logics from the rest of .. traversal.
NOTE: path_get/path_put introduced here are temporary. They will
go away later in the series.
Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
parent
efe772d6
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