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| author | Chuck Lever <chuck.lever@oracle.com> | 2022-04-29 17:06:21 +0300 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2022-05-23 18:06:29 +0300 |
| commit | 28df0988815f63e2af5e6718193c9f68681ad7ff (patch) | |
| tree | 63b9934813d5d24e8c90c65b396935abb8a722b2 /net/sunrpc/auth_gss/svcauth_gss.c | |
| parent | bb283ca18d1e67c82d22a329c96c9d6036a74790 (diff) | |
| download | linux-28df0988815f63e2af5e6718193c9f68681ad7ff.tar.xz | |
SUNRPC: Use RMW bitops in single-threaded hot paths
I noticed CPU pipeline stalls while using perf.
Once an svc thread is scheduled and executing an RPC, no other
processes will touch svc_rqst::rq_flags. Thus bus-locked atomics are
not needed outside the svc thread scheduler.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/sunrpc/auth_gss/svcauth_gss.c')
| -rw-r--r-- | net/sunrpc/auth_gss/svcauth_gss.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index c2ba9d4cd2c7..bcd74dddbe2d 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -900,7 +900,7 @@ unwrap_integ_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct g * rejecting the server-computed MIC in this somewhat rare case, * do not use splice with the GSS integrity service. */ - clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags); + __clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags); /* Did we already verify the signature on the original pass through? */ if (rqstp->rq_deferred) @@ -972,7 +972,7 @@ unwrap_priv_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct gs int pad, remaining_len, offset; u32 rseqno; - clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags); + __clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags); priv_len = svc_getnl(&buf->head[0]); if (rqstp->rq_deferred) { |