X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=fs%2Fceph%2Fdir.c;h=4248307fea909c6f1555758e536a3f733ad5f95d;hb=aefa441b150279dd8d25658e018898a3fe9a6769;hp=e729b79812b4eb60bc02d55be0489e9c32f47297;hpb=b3f4ef0bf21da37e4dfc1cdfa0288ba39186fb56;p=firefly-linux-kernel-4.4.55.git

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index e729b79812b4..4248307fea90 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -49,9 +49,9 @@ int ceph_init_dentry(struct dentry *dentry)
 		goto out_unlock;
 	}
 
-	if (ceph_snap(dentry->d_parent->d_inode) == CEPH_NOSNAP)
+	if (ceph_snap(d_inode(dentry->d_parent)) == CEPH_NOSNAP)
 		d_set_d_op(dentry, &ceph_dentry_ops);
-	else if (ceph_snap(dentry->d_parent->d_inode) == CEPH_SNAPDIR)
+	else if (ceph_snap(d_inode(dentry->d_parent)) == CEPH_SNAPDIR)
 		d_set_d_op(dentry, &ceph_snapdir_dentry_ops);
 	else
 		d_set_d_op(dentry, &ceph_snap_dentry_ops);
@@ -77,7 +77,7 @@ struct inode *ceph_get_dentry_parent_inode(struct dentry *dentry)
 
 	spin_lock(&dentry->d_lock);
 	if (!IS_ROOT(dentry)) {
-		inode = dentry->d_parent->d_inode;
+		inode = d_inode(dentry->d_parent);
 		ihold(inode);
 	}
 	spin_unlock(&dentry->d_lock);
@@ -122,7 +122,7 @@ static int __dcache_readdir(struct file *file,  struct dir_context *ctx,
 {
 	struct ceph_file_info *fi = file->private_data;
 	struct dentry *parent = file->f_path.dentry;
-	struct inode *dir = parent->d_inode;
+	struct inode *dir = d_inode(parent);
 	struct list_head *p;
 	struct dentry *dentry, *last;
 	struct ceph_dentry_info *di;
@@ -161,15 +161,15 @@ more:
 		}
 		spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
 		if (di->lease_shared_gen == shared_gen &&
-		    !d_unhashed(dentry) && dentry->d_inode &&
-		    ceph_snap(dentry->d_inode) != CEPH_SNAPDIR &&
-		    ceph_ino(dentry->d_inode) != CEPH_INO_CEPH &&
+		    !d_unhashed(dentry) && d_really_is_positive(dentry) &&
+		    ceph_snap(d_inode(dentry)) != CEPH_SNAPDIR &&
+		    ceph_ino(d_inode(dentry)) != CEPH_INO_CEPH &&
 		    fpos_cmp(ctx->pos, di->offset) <= 0)
 			break;
 		dout(" skipping %p %pd at %llu (%llu)%s%s\n", dentry,
 		     dentry, di->offset,
 		     ctx->pos, d_unhashed(dentry) ? " unhashed" : "",
-		     !dentry->d_inode ? " null" : "");
+		     !d_inode(dentry) ? " null" : "");
 		spin_unlock(&dentry->d_lock);
 		p = p->prev;
 		dentry = list_entry(p, struct dentry, d_child);
@@ -189,11 +189,11 @@ more:
 	}
 
 	dout(" %llu (%llu) dentry %p %pd %p\n", di->offset, ctx->pos,
-	     dentry, dentry, dentry->d_inode);
+	     dentry, dentry, d_inode(dentry));
 	if (!dir_emit(ctx, dentry->d_name.name,
 		      dentry->d_name.len,
-		      ceph_translate_ino(dentry->d_sb, dentry->d_inode->i_ino),
-		      dentry->d_inode->i_mode >> 12)) {
+		      ceph_translate_ino(dentry->d_sb, d_inode(dentry)->i_ino),
+		      d_inode(dentry)->i_mode >> 12)) {
 		if (last) {
 			/* remember our position */
 			fi->dentry = last;
@@ -543,7 +543,7 @@ int ceph_handle_snapdir(struct ceph_mds_request *req,
 			struct dentry *dentry, int err)
 {
 	struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb);
-	struct inode *parent = dentry->d_parent->d_inode; /* we hold i_mutex */
+	struct inode *parent = d_inode(dentry->d_parent); /* we hold i_mutex */
 
 	/* .snap dir? */
 	if (err == -ENOENT &&
@@ -579,8 +579,8 @@ struct dentry *ceph_finish_lookup(struct ceph_mds_request *req,
 		err = 0;
 		if (!req->r_reply_info.head->is_dentry) {
 			dout("ENOENT and no trace, dentry %p inode %p\n",
-			     dentry, dentry->d_inode);
-			if (dentry->d_inode) {
+			     dentry, d_inode(dentry));
+			if (d_really_is_positive(dentry)) {
 				d_drop(dentry);
 				err = -ENOENT;
 			} else {
@@ -627,7 +627,7 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
 		return ERR_PTR(err);
 
 	/* can we conclude ENOENT locally? */
-	if (dentry->d_inode == NULL) {
+	if (d_really_is_negative(dentry)) {
 		struct ceph_inode_info *ci = ceph_inode(dir);
 		struct ceph_dentry_info *di = ceph_dentry(dentry);
 
@@ -734,7 +734,7 @@ static int ceph_mknod(struct inode *dir, struct dentry *dentry,
 	ceph_mdsc_put_request(req);
 out:
 	if (!err)
-		ceph_init_inode_acls(dentry->d_inode, &acls);
+		ceph_init_inode_acls(d_inode(dentry), &acls);
 	else
 		d_drop(dentry);
 	ceph_release_acls_info(&acls);
@@ -835,7 +835,7 @@ static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 	ceph_mdsc_put_request(req);
 out:
 	if (!err)
-		ceph_init_inode_acls(dentry->d_inode, &acls);
+		ceph_init_inode_acls(d_inode(dentry), &acls);
 	else
 		d_drop(dentry);
 	ceph_release_acls_info(&acls);
@@ -872,8 +872,8 @@ static int ceph_link(struct dentry *old_dentry, struct inode *dir,
 	if (err) {
 		d_drop(dentry);
 	} else if (!req->r_reply_info.head->is_dentry) {
-		ihold(old_dentry->d_inode);
-		d_instantiate(dentry, old_dentry->d_inode);
+		ihold(d_inode(old_dentry));
+		d_instantiate(dentry, d_inode(old_dentry));
 	}
 	ceph_mdsc_put_request(req);
 	return err;
@@ -906,7 +906,7 @@ static int ceph_unlink(struct inode *dir, struct dentry *dentry)
 {
 	struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
 	struct ceph_mds_client *mdsc = fsc->mdsc;
-	struct inode *inode = dentry->d_inode;
+	struct inode *inode = d_inode(dentry);
 	struct ceph_mds_request *req;
 	int err = -EROFS;
 	int op;
@@ -975,8 +975,8 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry,
 	req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
 	/* release LINK_RDCACHE on source inode (mds will lock it) */
 	req->r_old_inode_drop = CEPH_CAP_LINK_SHARED;
-	if (new_dentry->d_inode)
-		req->r_inode_drop = drop_caps_for_unlink(new_dentry->d_inode);
+	if (d_really_is_positive(new_dentry))
+		req->r_inode_drop = drop_caps_for_unlink(d_inode(new_dentry));
 	err = ceph_mdsc_do_request(mdsc, old_dir, req);
 	if (!err && !req->r_reply_info.head->is_dentry) {
 		/*
@@ -1042,7 +1042,7 @@ static int dentry_lease_is_valid(struct dentry *dentry)
 			if (di->lease_renew_after &&
 			    time_after(jiffies, di->lease_renew_after)) {
 				/* we should renew */
-				dir = dentry->d_parent->d_inode;
+				dir = d_inode(dentry->d_parent);
 				session = ceph_get_mds_session(s);
 				seq = di->lease_seq;
 				di->lease_renew_after = 0;
@@ -1092,22 +1092,22 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
 		return -ECHILD;
 
 	dout("d_revalidate %p '%pd' inode %p offset %lld\n", dentry,
-	     dentry, dentry->d_inode, ceph_dentry(dentry)->offset);
+	     dentry, d_inode(dentry), ceph_dentry(dentry)->offset);
 
 	dir = ceph_get_dentry_parent_inode(dentry);
 
 	/* always trust cached snapped dentries, snapdir dentry */
 	if (ceph_snap(dir) != CEPH_NOSNAP) {
 		dout("d_revalidate %p '%pd' inode %p is SNAPPED\n", dentry,
-		     dentry, dentry->d_inode);
+		     dentry, d_inode(dentry));
 		valid = 1;
-	} else if (dentry->d_inode &&
-		   ceph_snap(dentry->d_inode) == CEPH_SNAPDIR) {
+	} else if (d_really_is_positive(dentry) &&
+		   ceph_snap(d_inode(dentry)) == CEPH_SNAPDIR) {
 		valid = 1;
 	} else if (dentry_lease_is_valid(dentry) ||
 		   dir_lease_is_valid(dir, dentry)) {
-		if (dentry->d_inode)
-			valid = ceph_is_any_caps(dentry->d_inode);
+		if (d_really_is_positive(dentry))
+			valid = ceph_is_any_caps(d_inode(dentry));
 		else
 			valid = 1;
 	}
@@ -1169,7 +1169,7 @@ static void ceph_d_prune(struct dentry *dentry)
 	 * we hold d_lock, so d_parent is stable, and d_fsdata is never
 	 * cleared until d_release
 	 */
-	ceph_dir_clear_complete(dentry->d_parent->d_inode);
+	ceph_dir_clear_complete(d_inode(dentry->d_parent));
 }
 
 /*