[Ocfs2-devel] [PATCH] ocfs2/dlm: make existing convertion precedent over new lock
Joel Becker
Joel.Becker at oracle.com
Wed Dec 8 10:07:57 PST 2010
On Wed, Dec 08, 2010 at 08:34:39PM +0800, Wengang Wang wrote:
> Make existing convertion precedent over new lock. It makes o2dlm locking more
> like fair locking.
Is this a problem you were solving, or just something you
thought about while reading the code? If it was a problem you ran
into, can you give the details?
Joel
>
> Signed-off-by: Wengang Wang <wen.gang.wang at oracle.com>
> ---
> fs/ocfs2/dlm/dlmlock.c | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c
> index 69cf369..7009292 100644
> --- a/fs/ocfs2/dlm/dlmlock.c
> +++ b/fs/ocfs2/dlm/dlmlock.c
> @@ -106,6 +106,9 @@ static int dlm_can_grant_new_lock(struct dlm_lock_resource *res,
>
> if (!dlm_lock_compatible(tmplock->ml.type, lock->ml.type))
> return 0;
> + if (!dlm_lock_compatible(tmplock->ml.convert_type,
> + lock->ml.type))
> + return 0;
> }
>
> return 1;
> --
> 1.7.2.3
>
>
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> Ocfs2-devel at oss.oracle.com
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--
Life's Little Instruction Book #207
"Swing for the fence."
Joel Becker
Senior Development Manager
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127
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