treewide: Use fallthrough pseudo-keyword

Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

9 files changed, 17 insertions, 17 deletions

diff --git a/fs/nfsd/blocklayout.c b/fs/nfsd/blocklayout.c
index 9bbaa671c079..311e5ce80cfc 100644
--- a/fs/nfsd/blocklayout.c
+++ b/fs/nfsd/blocklayout.c
@@ -83,13 +83,13 @@ nfsd4_block_proc_layoutget(struct inode *inode, const struct svc_fh *fhp,
 			bex->soff = iomap.addr;
 			break;
 		}
-		/*FALLTHRU*/
+		fallthrough;
 	case IOMAP_HOLE:
 		if (seg->iomode == IOMODE_READ) {
 			bex->es = PNFS_BLOCK_NONE_DATA;
 			break;
 		}
-		/*FALLTHRU*/
+		fallthrough;
 	case IOMAP_DELALLOC:
 	default:
 		WARN(1, "pnfsd: filesystem returned %d extent\n", iomap.type);
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/nfs4layouts.c b/fs/nfsd/nfs4layouts.c
index e12409eca7cc..a97873f2d22b 100644
--- a/fs/nfsd/nfs4layouts.c
+++ b/fs/nfsd/nfs4layouts.c
@@ -681,7 +681,7 @@ nfsd4_cb_layout_done(struct nfsd4_callback *cb, struct rpc_task *task)
 			rpc_delay(task, HZ/100); /* 10 mili-seconds */
 			return 0;
 		}
-		/* Fallthrough */
+		fallthrough;
 	default:
 		/*
 		 * Unknown error or non-responding client, we'll need to fence.
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..49a604b1c6a6 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;
@@ -4532,7 +4532,7 @@ static int nfsd4_cb_recall_done(struct nfsd4_callback *cb,
 			rpc_delay(task, 2 * HZ);
 			return 0;
 		}
-		/*FALLTHRU*/
+		fallthrough;
 	default:
 		return 1;
 	}
@@ -5652,7 +5652,7 @@ static __be32 nfsd4_validate_stateid(struct nfs4_client *cl, stateid_t *stateid)
 		break;
 	default:
 		printk("unknown stateid type %x\n", s->sc_type);
-		/* Fallthrough */
+		fallthrough;
 	case NFS4_CLOSED_STID:
 	case NFS4_CLOSED_DELEG_STID:
 		status = nfserr_bad_stateid;
@@ -6742,7 +6742,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		case NFS4_READW_LT:
 			if (nfsd4_has_session(cstate))
 				fl_flags |= FL_SLEEP;
-			/* Fallthrough */
+			fallthrough;
 		case NFS4_READ_LT:
 			spin_lock(&fp->fi_lock);
 			nf = find_readable_file_locked(fp);
@@ -6754,7 +6754,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		case NFS4_WRITEW_LT:
 			if (nfsd4_has_session(cstate))
 				fl_flags |= FL_SLEEP;
-			/* Fallthrough */
+			fallthrough;
 		case NFS4_WRITE_LT:
 			spin_lock(&fp->fi_lock);
 			nf = find_writeable_file_locked(fp);
@@ -6816,7 +6816,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 		break;
 	case FILE_LOCK_DEFERRED:
 		nbl = NULL;
-		/* Fallthrough */
+		fallthrough;
 	case -EAGAIN:		/* conflock holds conflicting lock */
 		status = nfserr_denied;
 		dprintk("NFSD: nfsd4_lock: conflicting lock found!\n");
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 37bc8f5f4514..c81dbbad8792 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -459,7 +459,7 @@ static bool fsid_type_ok_for_exp(u8 fsid_type, struct svc_export *exp)
 	case FSID_DEV:
 		if (!old_valid_dev(exp_sb(exp)->s_dev))
 			return false;
-		/* FALL THROUGH */
+		fallthrough;
 	case FSID_MAJOR_MINOR:
 	case FSID_ENCODE_DEV:
 		return exp_sb(exp)->s_type->fs_flags & FS_REQUIRES_DEV;
@@ -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/nfsproc.c b/fs/nfsd/nfsproc.c
index 543bbe0a556e..6e0b066480c5 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -314,7 +314,7 @@ nfsd_proc_create(struct svc_rqst *rqstp)
 					rdev = inode->i_rdev;
 					attr->ia_valid |= ATTR_SIZE;
 
-					/* FALLTHROUGH */
+					fallthrough;
 				case S_IFIFO:
 					/* this is probably a permission check..
 					 * at least IRIX implements perm checking on
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index b603dfcdd361..f7f6473578af 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -221,7 +221,7 @@ int nfsd_vers(struct nfsd_net *nn, int vers, enum vers_op change)
 	case NFSD_TEST:
 		if (nn->nfsd_versions)
 			return nn->nfsd_versions[vers];
-		/* Fallthrough */
+		fallthrough;
 	case NFSD_AVAIL:
 		return nfsd_support_version(vers);
 	}
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;
 		}