On 07/09/2015 02:39 PM, Tejun Heo wrote:
During 4.2-rc1 merge window, e48453c386f3 ("block, cgroup: implement policy-specific per-blkcg data") got merged. It had several bugs and a322baad1003 ("block/blk-cgroup.c: free per-blkcg data when freeing the blkcg") fixed one of them but there are still a couple remaining.* blkcg_policy[] iteration during css_alloc isn't protected. * Lazy allocation scheme is broken and policy data may be missing or an old policy data may get reused by the wrong policy. This patchset contains the following four patches to fix the above issues. 0001-blkcg-allow-blkcg_pol_mutex-to-be-grabbed-from-cgrou.patch 0002-blkcg-blkcg_css_alloc-should-grab-blkcg_pol_mutex-wh.patch 0003-blkcg-implement-all_blkcgs-list.patch 0004-blkcg-fix-blkcg_policy_data-allocation-bug.patch 0001 and 0003 are prep patches. 0002 and 0004 are the fixes. This patchset is on top of block/for-linus a322baad1003 ("block/blk-cgroup.c: free per-blkcg data when freeing the blkcg") and available in the following git branch. git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-blkcg-cpd-fixes diffstat follows, thanks.
Applied, thanks Tejun. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
