linux-kernel - [PATCH 5/7] cachefiles: Explicitly cast enumerated type in put

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Message-ID: <154359605275.18703.13154398219288238138.stgit@warthog.procyon.org.uk>
Date:   Fri, 30 Nov 2018 16:40:52 +0000
From:   David Howells <dhowells@...hat.com>
To:     torvalds@...ux-foundation.org
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Nathan Chancellor <natechancellor@...il.com>,
        dhowells@...hat.com, linux-cachefs@...hat.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 5/7] cachefiles: Explicitly cast enumerated type in
 put_object

From: Nathan Chancellor <natechancellor@...il.com>

Clang warns when one enumerated type is implicitly converted to another.

fs/cachefiles/namei.c:247:50: warning: implicit conversion from
enumeration type 'enum cachefiles_obj_ref_trace' to different
enumeration type 'enum fscache_obj_ref_trace' [-Wenum-conversion]
        cache->cache.ops->put_object(&xobject->fscache,
cachefiles_obj_put_wait_retry);

Silence this warning by explicitly casting to fscache_obj_ref_trace,
which is also done in put_object.

Reported-by: Nick Desaulniers <ndesaulniers@...gle.com>
Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
Signed-off-by: David Howells <dhowells@...hat.com>
---

 fs/cachefiles/namei.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
index 95983c744164..5ab411d4bc59 100644
--- a/fs/cachefiles/namei.c
+++ b/fs/cachefiles/namei.c
@@ -244,11 +244,13 @@ static int cachefiles_mark_object_active(struct cachefiles_cache *cache,
 
 	ASSERT(!test_bit(CACHEFILES_OBJECT_ACTIVE, &xobject->flags));
 
-	cache->cache.ops->put_object(&xobject->fscache, cachefiles_obj_put_wait_retry);
+	cache->cache.ops->put_object(&xobject->fscache,
+		(enum fscache_obj_ref_trace)cachefiles_obj_put_wait_retry);
 	goto try_again;
 
 requeue:
-	cache->cache.ops->put_object(&xobject->fscache, cachefiles_obj_put_wait_timeo);
+	cache->cache.ops->put_object(&xobject->fscache,
+		(enum fscache_obj_ref_trace)cachefiles_obj_put_wait_timeo);
 	_leave(" = -ETIMEDOUT");
 	return -ETIMEDOUT;
 }