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author | Chris Wright <chrisw@sous-sol.org> | 2010-08-11 03:02:55 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-11 17:59:18 +0200 |
commit | b7300b78d1a87625975a799a109a2f98d77757c8 (patch) | |
tree | 8cf263c09daf725ee701b0acd7ad700c530a5f08 /init/Kconfig | |
parent | cgroups: save space for the terminator (diff) | |
download | linux-b7300b78d1a87625975a799a109a2f98d77757c8.tar.xz linux-b7300b78d1a87625975a799a109a2f98d77757c8.zip |
blkdev: cgroup whitelist permission fix
The cgroup device whitelist code gets confused when trying to grant
permission to a disk partition that is not currently open. Part of
blkdev_open() includes __blkdev_get() on the whole disk.
Basically, the only ways to reliably allow a cgroup access to a partition
on a block device when using the whitelist are to 1) also give it access
to the whole block device or 2) make sure the partition is already open in
a different context.
The patch avoids the cgroup check for the whole disk case when opening a
partition.
Addresses https://bugzilla.redhat.com/show_bug.cgi?id=589662
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Acked-by: Serge E. Hallyn <serue@us.ibm.com>
Tested-by: Serge E. Hallyn <serue@us.ibm.com>
Reported-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: "Daniel P. Berrange" <berrange@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'init/Kconfig')
0 files changed, 0 insertions, 0 deletions