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    Subject[PATCH 13/17] Unionfs: use dget_parent in revalidation code
    Date
    Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
    ---
    fs/unionfs/dentry.c | 13 ++++---------
    1 files changed, 4 insertions(+), 9 deletions(-)

    diff --git a/fs/unionfs/dentry.c b/fs/unionfs/dentry.c
    index a956b94..f8f65e1 100644
    --- a/fs/unionfs/dentry.c
    +++ b/fs/unionfs/dentry.c
    @@ -410,15 +410,10 @@ bool __unionfs_d_revalidate_chain(struct dentry *dentry, struct nameidata *nd,
    goto out;
    }

    - /*
    - * lock all dentries in chain, in child to parent order.
    - * if failed, then sleep for a little, then retry.
    - */
    - dtmp = dentry->d_parent;
    - for (i = chain_len-1; i >= 0; i--) {
    - chain[i] = dget(dtmp);
    - dtmp = dtmp->d_parent;
    - }
    + /* grab all dentries in chain, in child to parent order */
    + dtmp = dentry;
    + for (i = chain_len-1; i >= 0; i--)
    + dtmp = chain[i] = dget_parent(dtmp);

    /*
    * call __unionfs_d_revalidate_one() on each dentry, but in parent
    --
    1.5.2.2


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