From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 71FA21E4B2; Wed, 21 Feb 2024 13:30:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708522243; cv=none; b=R0SlthOjwSKwKB74umAul6P7gxtfkZQdlJuzPr+PcOIKci94nYSZ9ZwMQTkVkAzPiRhD3CVzQNHfJLxq55yXm6KBSRJwc9YvoW5yzqkad3nDJdcJQgZScvLgMPu2rRAx3Xy1PrfugXgajYMFWHW/TO8y+lHsNExfLY2+BMgZ9L8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708522243; c=relaxed/simple; bh=g1XQjC6g1OWN7Jwa5jpHFBFHjj3bYwM9kT56e9PkyNk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hoDxbVe4UKMkLmyfzTrQXbtgoKf0Q++vwH//P8wIZdWNqAO+ypXj8Qvgd6EccwKdrfCZHxyFIfY+lTJjq2pPO+BOyfxPtqgR9XjuV4b6ycxSeuU9rpYy2f290yvq5dYZNgMl/gfx1Dftx9iKcP76vBBlfbzn50/i9AGNOsen3d4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=G8Gj0Jis; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="G8Gj0Jis" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9FE2AC433C7; Wed, 21 Feb 2024 13:30:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1708522243; bh=g1XQjC6g1OWN7Jwa5jpHFBFHjj3bYwM9kT56e9PkyNk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=G8Gj0JisYculX3Vb+eYx+QCoTnCFcxx1nLSSHIEMyBt5FCx9/1FYn7Aeltm1rhnb9 nUomIisAVgdAbQ/dzVPQ3UoZ6EvHWidDmIIm9PDwx2nCiV9CcsLpiO8QownfyGrBgk 10DY+2P3TeseDa9r0dazfU4jcC6ZmUdqnxaIrkcA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Chuck Lever , Sasha Levin Subject: [PATCH 5.15 112/476] NFSD: Add documenting comment for nfsd4_release_lockowner() Date: Wed, 21 Feb 2024 14:02:43 +0100 Message-ID: <20240221130012.115637097@linuxfoundation.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240221130007.738356493@linuxfoundation.org> References: <20240221130007.738356493@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chuck Lever [ Upstream commit 043862b09cc00273e35e6c3a6389957953a34207 ] And return explicit nfserr values that match what is documented in the new comment / API contract. Signed-off-by: Chuck Lever Stable-dep-of: edcf9725150e ("nfsd: fix RELEASE_LOCKOWNER") Signed-off-by: Sasha Levin --- fs/nfsd/nfs4state.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 798063b9b96f..f8533299db1c 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -7284,6 +7284,23 @@ check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner) return status; } +/** + * nfsd4_release_lockowner - process NFSv4.0 RELEASE_LOCKOWNER operations + * @rqstp: RPC transaction + * @cstate: NFSv4 COMPOUND state + * @u: RELEASE_LOCKOWNER arguments + * + * The lockowner's so_count is bumped when a lock record is added + * or when copying a conflicting lock. The latter case is brief, + * but can lead to fleeting false positives when looking for + * locks-in-use. + * + * Return values: + * %nfs_ok: lockowner released or not found + * %nfserr_locks_held: lockowner still in use + * %nfserr_stale_clientid: clientid no longer active + * %nfserr_expired: clientid not recognized + */ __be32 nfsd4_release_lockowner(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, @@ -7310,7 +7327,7 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, lo = find_lockowner_str_locked(clp, &rlockowner->rl_owner); if (!lo) { spin_unlock(&clp->cl_lock); - return status; + return nfs_ok; } if (atomic_read(&lo->lo_owner.so_count) != 2) { spin_unlock(&clp->cl_lock); @@ -7326,11 +7343,11 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp, put_ol_stateid_locked(stp, &reaplist); } spin_unlock(&clp->cl_lock); + free_ol_stateid_reaplist(&reaplist); remove_blocked_locks(lo); nfs4_put_stateowner(&lo->lo_owner); - - return status; + return nfs_ok; } static inline struct nfs4_client_reclaim * -- 2.43.0