ceph_fh_to_parent() returns dentry that corresponds to the 'ino' field
of struct ceph_nfs_confh. This is wrong, it should return dentry that
corresponds to the 'parent_ino' field.
Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx>
---
fs/ceph/export.c | 42 +++++++++---------------------------------
1 file changed, 9 insertions(+), 33 deletions(-)
diff --git a/fs/ceph/export.c b/fs/ceph/export.c
index 3794255..6e611e7 100644
--- a/fs/ceph/export.c
+++ b/fs/ceph/export.c
@@ -174,48 +174,24 @@ struct dentry *ceph_get_parent(struct dentry *child)
}
/*
- * get parent, if possible.
- *
- * FIXME: we could do better by querying the mds to discover the
- * parent.
+ * convert regular fh to parent
*/
static struct dentry *ceph_fh_to_parent(struct super_block *sb,
- struct fid *fid,
+ struct fid *fid,
int fh_len, int fh_type)
{
struct ceph_nfs_confh *cfh = (void *)fid->raw;
- struct ceph_vino vino;
- struct inode *inode;
struct dentry *dentry;
- int err;
- if (fh_type == 1)
- return ERR_PTR(-ESTALE);
+ if (fh_type != FILEID_INO32_GEN_PARENT)
+ return NULL;
if (fh_len < sizeof(*cfh) / 4)
- return ERR_PTR(-ESTALE);
-
- pr_debug("fh_to_parent %llx/%d\n", cfh->parent_ino,
- cfh->parent_name_hash);
-
- vino.ino = cfh->ino;
- vino.snap = CEPH_NOSNAP;
- inode = ceph_find_inode(sb, vino);
- if (!inode)
- return ERR_PTR(-ESTALE);
+ return NULL;
- dentry = d_obtain_alias(inode);
- if (IS_ERR(dentry)) {
- pr_err("fh_to_parent %llx -- inode %p but ENOMEM\n",
- cfh->ino, inode);
- iput(inode);
- return dentry;
- }
- err = ceph_init_dentry(dentry);
- if (err < 0) {
- iput(inode);
- return ERR_PTR(err);
- }
- dout("fh_to_parent %llx %p dentry %p\n", cfh->ino, inode, dentry);
+ dout("fh_to_parent %llx\n", cfh->parent_ino);
+ dentry = __get_parent(sb, cfh->ino);
+ if (IS_ERR(dentry) && PTR_ERR(dentry) == -ENOENT)
+ dentry = __fh_to_dentry(sb, cfh->parent_ino);
return dentry;
}
--
1.8.5.3
--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
