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| author | Arnd Bergmann <arnd@arndb.de> | 2021-11-05 13:35:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-06 13:30:32 -0700 |
| commit | d1cef29adc22938d778b4652af34e72facd8184b (patch) | |
| tree | 6bd37848305b1de4d3a560248dcb4858f83c2a9b /fs/posix_acl.c | |
| parent | c7c14a369de936957946b3843aae050d92451472 (diff) | |
| download | lwn-d1cef29adc22938d778b4652af34e72facd8184b.tar.gz lwn-d1cef29adc22938d778b4652af34e72facd8184b.zip | |
fs/posix_acl.c: avoid -Wempty-body warning
The fallthrough comment for an ignored cmpxchg() return value produces a
harmless warning with 'make W=1':
fs/posix_acl.c: In function 'get_acl':
fs/posix_acl.c:127:36: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
127 | /* fall through */ ;
| ^
Simplify it as a step towards a clean W=1 build. As all architectures
define cmpxchg() as a statement expression these days, it is no longer
necessary to evaluate its return code, and the if() can just be droped.
Link: https://lkml.kernel.org/r/20210927102410.1863853-1-arnd@kernel.org
Link: https://lore.kernel.org/all/20210322132103.qiun2rjilnlgztxe@wittgenstein/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: James Morris <jamorris@linux.microsoft.com>
Cc: Serge Hallyn <serge@hallyn.com>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/posix_acl.c')
| -rw-r--r-- | fs/posix_acl.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/posix_acl.c b/fs/posix_acl.c index f5c25f580dd9..9323a854a60a 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -134,8 +134,7 @@ struct posix_acl *get_acl(struct inode *inode, int type) * to just call ->get_acl to fetch the ACL ourself. (This is going to * be an unlikely race.) */ - if (cmpxchg(p, ACL_NOT_CACHED, sentinel) != ACL_NOT_CACHED) - /* fall through */ ; + cmpxchg(p, ACL_NOT_CACHED, sentinel); /* * Normally, the ACL returned by ->get_acl will be cached. |