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| author | Sage Weil <sage@newdream.net> | 2011-11-11 09:48:08 -0800 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2011-11-11 09:50:17 -0800 |
| commit | 774ac21da76f5c3018428725074e27a3fd40b128 (patch) | |
| tree | 3c22879278514494e467e651c918994cd6f359d2 /fs/ceph | |
| parent | 15a2015fbc692e1c97d7ce12d96e077f5ae7ea6d (diff) | |
| download | linux-stable-774ac21da76f5c3018428725074e27a3fd40b128.tar.gz linux-stable-774ac21da76f5c3018428725074e27a3fd40b128.tar.bz2 linux-stable-774ac21da76f5c3018428725074e27a3fd40b128.zip | |
ceph: initialize root dentry
Set up d_fsdata on the root dentry. This fixes a NULL pointer dereference
in ceph_d_prune on umount. It also means we can eventually strip out all
of the conditional checks on d_fsdata because it is now set unconditionally
(prior to setting up the d_ops).
Fix the ceph_d_prune debug print while we're here.
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs/ceph')
| -rw-r--r-- | fs/ceph/dir.c | 2 | ||||
| -rw-r--r-- | fs/ceph/super.c | 6 |
2 files changed, 5 insertions, 3 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 2abd0dfad7f8..bca3948e9dbf 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -1143,7 +1143,7 @@ static void ceph_d_prune(struct dentry *dentry) { struct ceph_dentry_info *di; - dout("d_release %p\n", dentry); + dout("ceph_d_prune %p\n", dentry); /* do we have a valid parent? */ if (!dentry->d_parent || IS_ROOT(dentry)) diff --git a/fs/ceph/super.c b/fs/ceph/super.c index a90846fac759..8dc73a594a90 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -638,10 +638,12 @@ static struct dentry *open_root_dentry(struct ceph_fs_client *fsc, if (err == 0) { dout("open_root_inode success\n"); if (ceph_ino(req->r_target_inode) == CEPH_INO_ROOT && - fsc->sb->s_root == NULL) + fsc->sb->s_root == NULL) { root = d_alloc_root(req->r_target_inode); - else + ceph_init_dentry(root); + } else { root = d_obtain_alias(req->r_target_inode); + } req->r_target_inode = NULL; dout("open_root_inode success, root dentry is %p\n", root); } else { |