rbd: don't over-allocate space for object prefix
authorAlex Elder <elder@inktank.com>
Fri, 24 Aug 2012 04:22:06 +0000 (23:22 -0500)
committerAlex Elder <elder@inktank.com>
Mon, 1 Oct 2012 19:30:49 +0000 (14:30 -0500)
commit58c17b0e1b2278824aedc5d1201f6a43a38d6a48
treea924fc7450e712bec4ca519d6d8bf8314cb7b3f6
parent1f7ba3311530993801d6877889efff0382bcd641
rbd: don't over-allocate space for object prefix

In rbd_header_from_disk() the object prefix buffer is sized based on
the maximum size it's block_name equivalent on disk could be.

Instead, only allocate enough to hold null-terminated string from
the on-disk header--or the maximum size of no NUL is found.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>
drivers/block/rbd.c