Re: [PATCH] nfsd: Convert to use the preferred fallthrough macro

From: Chuck Lever
Date: Wed Aug 19 2020 - 08:57:53 EST




> On Aug 19, 2020, at 5:26 AM, Miaohe Lin <linmiaohe@xxxxxxxxxx> wrote:
>
> Convert the uses of fallthrough comments to fallthrough macro.

The patch description would be more helpful if it referenced the
commit that added the fallthrough macro to the kernel, or a
permanent mailing list link that described its appropriate usage.

Thanks!

> Signed-off-by: Hongxiang Lou <louhongxiang@xxxxxxxxxx>
> Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
> ---
> 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
>

--
Chuck Lever