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| author | Steven Rostedt <rostedt@goodmis.org> | 2011-02-08 12:39:54 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-02-16 13:35:08 +0100 |
| commit | 48228f7b470a74b6469a250d2977a13128d8fe96 (patch) | |
| tree | 1ed8f82ffef779ccf665f68c1fcf302d34d09826 /fs/jbd | |
| parent | a3ec4a603faf4244e275bf11b467aad092dfbd8a (diff) | |
| download | blackbird-op-linux-48228f7b470a74b6469a250d2977a13128d8fe96.tar.gz blackbird-op-linux-48228f7b470a74b6469a250d2977a13128d8fe96.zip | |
lockdep/timers: Explain in detail the locking problems del_timer_sync() may cause
Twice I had to explain the output about why lockdep gives an error with
locks in IRQ context and with del_timer_sync(). Might as well write it
up and place it in the comments above the code in del_timer_sync().
Perhaps the next time this lockdep dump triggers people will understand
the issues.
It is a ticky issue and very subtle, explaining it in detail in the code
may help others understand the issue when they stumble upon the bug
again.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1297186794.23343.19.camel@gandalf.stny.rr.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/jbd')
0 files changed, 0 insertions, 0 deletions
