[PATCH] NFS: Mark expected switch fall-throughs

From: Gustavo A. R. Silva
Date: Tue Jul 31 2018 - 22:18:49 EST

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In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Warning level 2 was used: -Wimplicit-fallthrough=2

Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
---
fs/nfs/blocklayout/blocklayout.c | 1 +
fs/nfs/nfs3acl.c | 2 ++
fs/nfs/nfs4file.c | 1 +
fs/nfs/nfs4idmap.c | 2 ++
fs/nfs/nfs4proc.c | 8 ++++++++
fs/nfs/nfs4state.c | 6 ++++++
fs/nfs/pagelist.c | 1 +
7 files changed, 21 insertions(+)

diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index 9619016..a981733 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -753,6 +753,7 @@ bl_alloc_lseg(struct pnfs_layout_hdr *lo, struct nfs4_layoutget_res *lgr,
case -ENODEV:
/* Our extent block devices are unavailable */
set_bit(NFS_LSEG_UNAVAILABLE, &lseg->pls_flags);
+ /* Fall through */
case 0:
return lseg;
default:
diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c
index 7173a4e..9fce185 100644
--- a/fs/nfs/nfs3acl.c
+++ b/fs/nfs/nfs3acl.c
@@ -108,6 +108,7 @@ struct posix_acl *nfs3_get_acl(struct inode *inode, int type)
case -EPROTONOSUPPORT:
dprintk("NFS_V3_ACL extension not supported; disabling\n");
server->caps &= ~NFS_CAP_ACLS;
+ /* fall through */
case -ENOTSUPP:
status = -EOPNOTSUPP;
default:
@@ -229,6 +230,7 @@ static int __nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
dprintk("NFS_V3_ACL SETACL RPC not supported"
"(will not retry)\n");
server->caps &= ~NFS_CAP_ACLS;
+ /* fall through */
case -ENOTSUPP:
status = -EOPNOTSUPP;
}
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 6b3b372..6c03d6b 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -149,6 +149,7 @@ static loff_t nfs4_file_llseek(struct file *filep, loff_t offset, int whence)
ret = nfs42_proc_llseek(filep, offset, whence);
if (ret != -ENOTSUPP)
return ret;
+ /* Fall through */
default:
return nfs_file_llseek(filep, offset, whence);
}
diff --git a/fs/nfs/nfs4idmap.c b/fs/nfs/nfs4idmap.c
index cf72169..3f23b68 100644
--- a/fs/nfs/nfs4idmap.c
+++ b/fs/nfs/nfs4idmap.c
@@ -506,6 +506,7 @@ static int nfs_idmap_prepare_message(char *desc, struct idmap *idmap,
switch (token) {
case Opt_find_uid:
im->im_type = IDMAP_TYPE_USER;
+ /* Fall through */
case Opt_find_gid:
im->im_conv = IDMAP_CONV_NAMETOID;
ret = match_strlcpy(im->im_name, &substr, IDMAP_NAMESZ);
@@ -513,6 +514,7 @@ static int nfs_idmap_prepare_message(char *desc, struct idmap *idmap,

case Opt_find_user:
im->im_type = IDMAP_TYPE_USER;
+ /* Fall through */
case Opt_find_group:
im->im_conv = IDMAP_CONV_IDTONAME;
ret = match_int(&substr, &im->im_id);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 981c1cb..bed38b9 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -449,6 +449,7 @@ static int nfs4_do_handle_exception(struct nfs_server *server,
stateid);
goto wait_on_recovery;
}
+ /* Fall through */
case -NFS4ERR_OPENMODE:
if (inode) {
int err;
@@ -501,8 +502,10 @@ static int nfs4_do_handle_exception(struct nfs_server *server,
ret = -EBUSY;
break;
}
+ /* Fall through */
case -NFS4ERR_DELAY:
nfs_inc_server_stats(server, NFSIOS_DELAY);
+ /* Fall through */
case -NFS4ERR_GRACE:
case -NFS4ERR_LAYOUTTRYLATER:
case -NFS4ERR_RECALLCONFLICT:
@@ -1361,6 +1364,7 @@ static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode,
case NFS4_OPEN_CLAIM_PREVIOUS:
if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
break;
+ /* Fall through */
default:
return 0;
}
@@ -2130,6 +2134,7 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx,
err = nfs4_open_recover_helper(opendata, FMODE_WRITE);
if (err)
break;
+ /* Fall through */
case FMODE_READ:
err = nfs4_open_recover_helper(opendata, FMODE_READ);
}
@@ -2259,6 +2264,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0];
+ /* Fall through */
case NFS4_OPEN_CLAIM_FH:
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
}
@@ -6221,11 +6227,13 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
if (nfs4_update_lock_stateid(calldata->lsp,
&calldata->res.stateid))
break;
+ /* Fall through */
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_EXPIRED:
nfs4_free_revoked_stateid(calldata->server,
&calldata->arg.stateid,
task->tk_msg.rpc_cred);
+ /* Fall through */
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_STALE_STATEID:
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 2bf2eaa..f1b27e8 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1525,6 +1525,7 @@ static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_
default:
pr_err("NFS: %s: unhandled error %d\n",
__func__, status);
+ /* Fall through */
case -ENOMEM:
case -NFS4ERR_DENIED:
case -NFS4ERR_RECLAIM_BAD:
@@ -1597,6 +1598,7 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
default:
printk(KERN_ERR "NFS: %s: unhandled error %d\n",
__func__, status);
+ /* Fall through */
case -ENOENT:
case -ENOMEM:
case -EACCES:
@@ -1608,6 +1610,7 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
break;
case -EAGAIN:
ssleep(1);
+ /* Fall through */
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_OLD_STATEID:
@@ -2190,9 +2193,11 @@ int nfs4_discover_server_trunking(struct nfs_client *clp,
case -ETIMEDOUT:
if (clnt->cl_softrtry)
break;
+ /* Fall through */
case -NFS4ERR_DELAY:
case -EAGAIN:
ssleep(1);
+ /* Fall through */
case -NFS4ERR_STALE_CLIENTID:
dprintk("NFS: %s after status %d, retrying\n",
__func__, status);
@@ -2204,6 +2209,7 @@ int nfs4_discover_server_trunking(struct nfs_client *clp,
}
if (clnt->cl_auth->au_flavor == RPC_AUTH_UNIX)
break;
+ /* Fall through */
case -NFS4ERR_CLID_INUSE:
case -NFS4ERR_WRONGSEC:
/* No point in retrying if we already used RPC_AUTH_UNIX */
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 67d19cd..bb5476a 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -561,6 +561,7 @@ static void nfs_pgio_rpcsetup(struct nfs_pgio_header *hdr,
case FLUSH_COND_STABLE:
if (nfs_reqs_to_commit(cinfo))
break;
+ /* fall through */
default:
hdr->args.stable = NFS_FILE_SYNC;
}
--
2.7.4

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