diff options
| author | Sage Weil <sage@inktank.com> | 2012-06-07 22:43:35 +0200 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2012-07-30 18:29:54 +0200 |
| commit | 8842b3be96c376f174ae0d4f282d14728ad5febf (patch) | |
| tree | aa7b7380285d7806c4e2a6a1080a169e379505d3 /fs/ceph | |
| parent | libceph: prevent the race of incoming work during teardown (diff) | |
| download | linux-8842b3be96c376f174ae0d4f282d14728ad5febf.tar.xz linux-8842b3be96c376f174ae0d4f282d14728ad5febf.zip | |
ceph: clean up useless d_parent checks
d_parent is never NULL, and IS_ROOT() is the proper way to check for a
(non-self-referential) parent.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/dir.c | 7 | ||||
| -rw-r--r-- | fs/ceph/mds_client.c | 11 |
2 files changed, 3 insertions, 15 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 3e8094be4604..6a66bd2d4da0 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -51,8 +51,7 @@ int ceph_init_dentry(struct dentry *dentry) goto out_unlock; } - if (dentry->d_parent == NULL || /* nfs fh_to_dentry */ - ceph_snap(dentry->d_parent->d_inode) == CEPH_NOSNAP) + if (ceph_snap(dentry->d_parent->d_inode) == CEPH_NOSNAP) d_set_d_op(dentry, &ceph_dentry_ops); else if (ceph_snap(dentry->d_parent->d_inode) == CEPH_SNAPDIR) d_set_d_op(dentry, &ceph_snapdir_dentry_ops); @@ -79,7 +78,7 @@ struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry) return NULL; spin_lock(&dentry->d_lock); - if (dentry->d_parent) { + if (!IS_ROOT(dentry)) { inode = dentry->d_parent->d_inode; ihold(inode); } @@ -1140,7 +1139,7 @@ static void ceph_d_prune(struct dentry *dentry) dout("ceph_d_prune %p\n", dentry); /* do we have a valid parent? */ - if (!dentry->d_parent || IS_ROOT(dentry)) + if (IS_ROOT(dentry)) return; /* if we are not hashed, we don't affect D_COMPLETE */ diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 5ac6434185ae..418f6a82c90d 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -1469,11 +1469,6 @@ retry: else len += 1 + temp->d_name.len; temp = temp->d_parent; - if (temp == NULL) { - rcu_read_unlock(); - pr_err("build_path corrupt dentry %p\n", dentry); - return ERR_PTR(-EINVAL); - } } rcu_read_unlock(); if (len) @@ -1510,12 +1505,6 @@ retry: if (pos) path[--pos] = '/'; temp = temp->d_parent; - if (temp == NULL) { - rcu_read_unlock(); - pr_err("build_path corrupt dentry\n"); - kfree(path); - return ERR_PTR(-EINVAL); - } } rcu_read_unlock(); if (pos != 0 || read_seqretry(&rename_lock, seq)) { |