linux-kernel - [PATCH v2] nfsd: Convert to use the preferred fallthrough macro

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Date:   Wed, 19 Aug 2020 22:57:18 -0400
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <bfields@...ldses.org>, <chuck.lever@...cle.com>
CC:     <linux-nfs@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH v2] nfsd: Convert to use the preferred fallthrough macro

Convert the uses of fallthrough comments to fallthrough macro. Please see
commit 294f69e662d1 ("compiler_attributes.h: Add 'fallthrough' pseudo
keyword for switch/case use") for detail.

Signed-off-by: Hongxiang Lou <louhongxiang@...wei.com>
Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 fs/nfsd/nfs4callback.c | 2 +-
 fs/nfsd/nfs4proc.c     | 2 +-
 fs/nfsd/nfs4state.c    | 2 +-
 fs/nfsd/nfsfh.c        | 2 +-
 fs/nfsd/vfs.c          | 4 ++--
 5 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 7fbe9840a03e..052be5bf9ef5 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -1119,7 +1119,7 @@ static bool nfsd4_cb_sequence_done(struct rpc_task *task, struct nfsd4_callback
 		break;
 	case -ESERVERFAULT:
 		++session->se_cb_seq_nr;
-		/* Fall through */
+		fallthrough;
 	case 1:
 	case -NFS4ERR_BADSESSION:
 		nfsd4_mark_cb_fault(cb->cb_clp, cb->cb_seq_status);
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index a527da3d8052..eaf50eafa935 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -428,7 +428,7 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 				goto out;
 			open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
 			reclaim = true;
-			/* fall through */
+			fallthrough;
 		case NFS4_OPEN_CLAIM_FH:
 		case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
 			status = do_open_fhandle(rqstp, cstate, open);
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 81ed8e8bab3f..2f77f4b66cbc 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3117,7 +3117,7 @@ nfsd4_exchange_id(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		break;
 	default:				/* checked by xdr code */
 		WARN_ON_ONCE(1);
-		/* fall through */
+		fallthrough;
 	case SP4_SSV:
 		status = nfserr_encr_alg_unsupp;
 		goto out_nolock;
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 37bc8f5f4514..a0a8d27539ae 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -469,7 +469,7 @@ static bool fsid_type_ok_for_exp(u8 fsid_type, struct svc_export *exp)
 	case FSID_UUID16:
 		if (!is_root_export(exp))
 			return false;
-		/* fall through */
+		fallthrough;
 	case FSID_UUID4_INUM:
 	case FSID_UUID16_INUM:
 		return exp->ex_uuid != NULL;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 7d2933b85b65..aba5af9df328 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1456,7 +1456,7 @@ do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
 					*created = true;
 				break;
 			}
-			/* fall through */
+			fallthrough;
 		case NFS4_CREATE_EXCLUSIVE4_1:
 			if (   d_inode(dchild)->i_mtime.tv_sec == v_mtime
 			    && d_inode(dchild)->i_atime.tv_sec == v_atime
@@ -1465,7 +1465,7 @@ do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
 					*created = true;
 				goto set_attr;
 			}
-			/* fall through */
+			fallthrough;
 		case NFS3_CREATE_GUARDED:
 			err = nfserr_exist;
 		}
-- 
2.19.1