Messages in this thread | | | Date | Sat, 27 Feb 2016 00:52:46 -0800 | From | Christoph Hellwig <> | Subject | Re: [RFC V2 PATCH] kernfs: create raw version kernfs_path_len and kernfs_path |
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On Fri, Feb 26, 2016 at 01:47:39PM -0800, Yang Shi wrote: > commit 5634cc2aa9aebc77bc862992e7805469dcf83dac ("writeback: update writeback > tracepoints to report cgroup") made writeback tracepoints report cgroup > writeback, but it may trigger the below bug on -rt kernel since kernfs_path > and kernfs_path_len are called by tracepoints, which acquire sleeping lock.
Sounds like the tracepoints simplify shouldn't try to do this path generation at all..
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