[Ocfs2-devel] [PATCH] ocfs2: Hold ip_lock when set/clear flags for indexed dir.
Joel Becker
Joel.Becker at oracle.com
Thu Dec 16 00:41:38 PST 2010
On Wed, Dec 15, 2010 at 04:30:00PM +0800, Tao Ma wrote:
> From: Tao Ma <boyu.mt at taobao.com>
>
> When we set/clear the dyn_features for an inode we hold the ip_lock.
> So do it when we set/clear OCFS2_INDEXED_DIR_FL also.
>
> Signed-off-by: Tao Ma <boyu.mt at taobao.com>
This is now in the fixes branch of ocfs2.git.
Joel
> ---
> fs/ocfs2/dir.c | 4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
> index c49f6de..d417b3f 100644
> --- a/fs/ocfs2/dir.c
> +++ b/fs/ocfs2/dir.c
> @@ -2461,8 +2461,10 @@ static int ocfs2_dx_dir_attach_index(struct ocfs2_super *osb,
>
> di->i_dx_root = cpu_to_le64(dr_blkno);
>
> + spin_lock(&OCFS2_I(dir)->ip_lock);
> OCFS2_I(dir)->ip_dyn_features |= OCFS2_INDEXED_DIR_FL;
> di->i_dyn_features = cpu_to_le16(OCFS2_I(dir)->ip_dyn_features);
> + spin_unlock(&OCFS2_I(dir)->ip_lock);
>
> ocfs2_journal_dirty(handle, di_bh);
>
> @@ -4466,8 +4468,10 @@ static int ocfs2_dx_dir_remove_index(struct inode *dir,
> goto out_commit;
> }
>
> + spin_lock(&OCFS2_I(dir)->ip_lock);
> OCFS2_I(dir)->ip_dyn_features &= ~OCFS2_INDEXED_DIR_FL;
> di->i_dyn_features = cpu_to_le16(OCFS2_I(dir)->ip_dyn_features);
> + spin_unlock(&OCFS2_I(dir)->ip_lock);
> di->i_dx_root = cpu_to_le64(0ULL);
>
> ocfs2_journal_dirty(handle, di_bh);
> --
> 1.7.0.4
>
--
"Here's something to think about: How come you never see a headline
like ``Psychic Wins Lottery''?"
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Joel Becker
Senior Development Manager
Oracle
E-mail: joel.becker at oracle.com
Phone: (650) 506-8127
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