On Mon, Jul 19, 2010 at 04:04:12PM -0700, Srinivas Eeda wrote:
> This patch fixes two problems in dlm_run_purgelist
>
> 1. If a lockres is found to be in use, dlm_run_purgelist keeps trying to purge
> the same lockres instead of trying the next lockres.
>
> 2. When a lockres is found unused, dlm_run_purgelist releases lockres spinlock
> before setting DLM_LOCK_RES_DROPPING_REF and calls dlm_purge_lockres.
> spinlock is reacquired but in this window lockres can get reused. This leads
> to BUG.
>
> This patch modifies dlm_run_purgelist to skip lockres if it's in use and purge
> next lockres. It also sets DLM_LOCK_RES_DROPPING_REF before releasing the
> lockres spinlock protecting it from getting reused.
>
> Signed-off-by: Srinivas Eeda <srinivas.e...@oracle.com>
> Acked-by: Sunil Mushran <sunil.mush...@oracle.com>
This patch is now in the fixes branch of ocfs2.git.
Joel
--
"To fall in love is to create a religion that has a fallible god."
-Jorge Luis Borges
Joel Becker
Consulting Software Developer
Oracle
E-mail: joel.bec...@oracle.com
Phone: (650) 506-8127
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