[Ocfs2-devel] configfs: Q: item leak in a failing configfs_attach_group()?
Joel Becker
Joel.Becker at oracle.com
Tue Jun 24 10:10:51 PDT 2008
On Tue, Jun 24, 2008 at 04:16:49PM +0200, Louis Rilling wrote:
> Hi,
>
> I'd like an opinion on the following scenario:
>
> process 1: process 2:
> configfs_mkdir("A")
> attach_group("A")
> attach_item("A")
> d_instantiate("A")
> populate_groups("A")
> mutex_lock("A")
> attach_group("A/B")
> attach_item("A")
> d_instantiate("A/B")
> mkdir("A/B/C")
> do_path_lookup("A/B/C", LOOKUP_PARENT)
This has to sleep until
configfs_mkdir("A") finishes.
It's waiting on A->d_parent's
i_mutex, which is held by
sys_mkdirat().
Joel
--
"Sometimes one pays most for the things one gets for nothing."
- Albert Einstein
Joel Becker
Principal Software Developer
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127
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