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authorYan, Zheng <zheng.z.yan@intel.com>2014-03-01 23:09:05 +0800
committerYan, Zheng <zheng.z.yan@intel.com>2014-04-03 10:33:53 +0800
commit8996f4f23db735f0f3bab34352188b1ab21d7d7f (patch)
treecc9d5da9af62a94511ca6e08a8642ac0843b9f9b /fs/ceph/export.c
parent9017c2ec78c730fb3ecd703d44e4a9061de2ba52 (diff)
ceph: fix ceph_fh_to_parent()
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@intel.com> Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'fs/ceph/export.c')
-rw-r--r--fs/ceph/export.c42
1 files changed, 9 insertions, 33 deletions
diff --git a/fs/ceph/export.c b/fs/ceph/export.c
index 9c28b6abe885..eb66408ff236 100644
--- a/fs/ceph/export.c
+++ b/fs/ceph/export.c
@@ -181,48 +181,24 @@ 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, NULL, cfh->ino);
+ if (IS_ERR(dentry) && PTR_ERR(dentry) == -ENOENT)
+ dentry = __fh_to_dentry(sb, cfh->parent_ino);
return dentry;
}