if (dentry->d_fsdata)
return 0;
- di = kmem_cache_alloc(ceph_dentry_cachep, GFP_KERNEL | __GFP_ZERO);
+ di = kmem_cache_zalloc(ceph_dentry_cachep, GFP_KERNEL);
if (!di)
return -ENOMEM; /* oh well */
return 0;
}
-struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry)
-{
- struct inode *inode = NULL;
-
- if (!dentry)
- return NULL;
-
- spin_lock(&dentry->d_lock);
- if (!IS_ROOT(dentry)) {
- inode = d_inode(dentry->d_parent);
- ihold(inode);
- }
- spin_unlock(&dentry->d_lock);
- return inode;
-}
-
-
/*
* for readdir, we encode the directory frag and offset within that
* frag into f_pos.
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
int op;
+ int mask;
int err;
dout("lookup %p dentry %p '%pd'\n",
return ERR_CAST(req);
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
- /* we only need inode linkage */
- req->r_args.getattr.mask = cpu_to_le32(CEPH_STAT_CAP_INODE);
+
+ mask = CEPH_STAT_CAP_INODE | CEPH_CAP_AUTH_SHARED;
+ if (ceph_security_xattr_wanted(dir))
+ mask |= CEPH_CAP_XATTR_SHARED;
+ req->r_args.getattr.mask = cpu_to_le32(mask);
+
req->r_locked_dir = dir;
err = ceph_mdsc_do_request(mdsc, NULL, req);
err = ceph_handle_snapdir(req, dentry, err);
static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
{
int valid = 0;
+ struct dentry *parent;
struct inode *dir;
if (flags & LOOKUP_RCU)
dout("d_revalidate %p '%pd' inode %p offset %lld\n", dentry,
dentry, d_inode(dentry), ceph_dentry(dentry)->offset);
- dir = ceph_get_dentry_parent_inode(dentry);
+ parent = dget_parent(dentry);
+ dir = d_inode(parent);
/* always trust cached snapped dentries, snapdir dentry */
if (ceph_snap(dir) != CEPH_NOSNAP) {
valid = 1;
}
+ if (!valid) {
+ struct ceph_mds_client *mdsc =
+ ceph_sb_to_client(dir->i_sb)->mdsc;
+ struct ceph_mds_request *req;
+ int op, mask, err;
+
+ op = ceph_snap(dir) == CEPH_SNAPDIR ?
+ CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_LOOKUP;
+ req = ceph_mdsc_create_request(mdsc, op, USE_ANY_MDS);
+ if (!IS_ERR(req)) {
+ req->r_dentry = dget(dentry);
+ req->r_num_caps = 2;
+
+ mask = CEPH_STAT_CAP_INODE | CEPH_CAP_AUTH_SHARED;
+ if (ceph_security_xattr_wanted(dir))
+ mask |= CEPH_CAP_XATTR_SHARED;
+ req->r_args.getattr.mask = mask;
+
+ req->r_locked_dir = dir;
+ err = ceph_mdsc_do_request(mdsc, NULL, req);
+ if (err == 0 || err == -ENOENT) {
+ if (dentry == req->r_dentry) {
+ valid = !d_unhashed(dentry);
+ } else {
+ d_invalidate(req->r_dentry);
+ err = -EAGAIN;
+ }
+ }
+ ceph_mdsc_put_request(req);
+ dout("d_revalidate %p lookup result=%d\n",
+ dentry, err);
+ }
+ }
+
dout("d_revalidate %p %s\n", dentry, valid ? "valid" : "invalid");
if (valid) {
ceph_dentry_lru_touch(dentry);
} else {
ceph_dir_clear_complete(dir);
}
- iput(dir);
+
+ dput(parent);
return valid;
}