From 21924765862a0871908a35cb0e53e2e1c169b888 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 2 Oct 2018 22:57:46 +0200 Subject: SUNRPC: use cmpxchg64() in gss_seq_send64_fetch_and_inc() The newly introduced gss_seq_send64_fetch_and_inc() fails to build on 32-bit architectures: net/sunrpc/auth_gss/gss_krb5_seal.c:144:14: note: in expansion of macro 'cmpxchg' seq_send = cmpxchg(&ctx->seq_send64, old, old + 1); ^~~~~~~ arch/x86/include/asm/cmpxchg.h:128:3: error: call to '__cmpxchg_wrong_size' declared with attribute error: Bad argument size for cmpxchg __cmpxchg_wrong_size(); \ As the message tells us, cmpxchg() cannot be used on 64-bit arguments, that's what cmpxchg64() does. Fixes: 571ed1fd2390 ("SUNRPC: Replace krb5_seq_lock with a lockless scheme") Signed-off-by: Arnd Bergmann Signed-off-by: Trond Myklebust --- net/sunrpc/auth_gss/gss_krb5_seal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/sunrpc') diff --git a/net/sunrpc/auth_gss/gss_krb5_seal.c b/net/sunrpc/auth_gss/gss_krb5_seal.c index 0ffb797b92e5..54e41c01edb7 100644 --- a/net/sunrpc/auth_gss/gss_krb5_seal.c +++ b/net/sunrpc/auth_gss/gss_krb5_seal.c @@ -141,7 +141,7 @@ gss_seq_send64_fetch_and_inc(struct krb5_ctx *ctx) do { old = seq_send; - seq_send = cmpxchg(&ctx->seq_send64, old, old + 1); + seq_send = cmpxchg64(&ctx->seq_send64, old, old + 1); } while (old != seq_send); return seq_send; } -- cgit v1.2.3