9p: unify paths in v9fs_vfs_lookup() (500e2ab6) · Commits · e / devices / android_kernel_xiaomi_nabu

fs/9p/vfs_inode.c

+15 −20

Original line number	Diff line number	Diff line
		@@ -823,28 +823,21 @@ struct dentry v9fs_vfs_lookup(struct inode dir, struct dentry *dentry,
		if (IS_ERR(dfid))
		return ERR_CAST(dfid);

		name = dentry->d_name.name;
		fid = p9_client_walk(dfid, 1, &name, 1);
		if (IS_ERR(fid)) {
		if (fid == ERR_PTR(-ENOENT)) {
		d_add(dentry, NULL);
		return NULL;
		}
		return ERR_CAST(fid);
		}
		/*
		* Make sure we don't use a wrong inode due to parallel
		* unlink. For cached mode create calls request for new
		* inode. But with cache disabled, lookup should do this.
		*/
		if (v9ses->cache == CACHE_LOOSE \|\| v9ses->cache == CACHE_FSCACHE)
		name = dentry->d_name.name;
		fid = p9_client_walk(dfid, 1, &name, 1);
		if (fid == ERR_PTR(-ENOENT))
		inode = NULL;
		else if (IS_ERR(fid))
		inode = ERR_CAST(fid);
		else if (v9ses->cache == CACHE_LOOSE \|\| v9ses->cache == CACHE_FSCACHE)
		inode = v9fs_get_inode_from_fid(v9ses, fid, dir->i_sb);
		else
		inode = v9fs_get_new_inode_from_fid(v9ses, fid, dir->i_sb);
		if (IS_ERR(inode)) {
		p9_client_clunk(fid);
		return ERR_CAST(inode);
		}
		/*
		* If we had a rename on the server and a parallel lookup
		* for the new name, then make sure we instantiate with
		@@ -853,12 +846,14 @@ struct dentry v9fs_vfs_lookup(struct inode dir, struct dentry *dentry,
		* k/b.
		*/
		res = d_splice_alias(inode, dentry);
		if (!IS_ERR(fid)) {
		if (!res)
		v9fs_fid_add(dentry, fid);
		else if (!IS_ERR(res))
		v9fs_fid_add(res, fid);
		else
		p9_client_clunk(fid);
		}
		return res;
		}