summaryrefslogtreecommitdiffstats
path: root/net/ceph/messenger.c
diff options
context:
space:
mode:
authorIngo Molnar <mingo@kernel.org>2014-06-06 07:55:06 +0200
committerIngo Molnar <mingo@kernel.org>2014-06-06 07:55:06 +0200
commitec00010972a0971b2c1da4fbe4e5c7d8ed1ecb05 (patch)
treec28975d7daf6d8a3aa23afe8f42837b71105b269 /net/ceph/messenger.c
parent8c6e549a447c51f4f8c0ba7f1e444469f75a354a (diff)
parente041e328c4b41e1db79bfe5ba9992c2ed771ad19 (diff)
downloadop-kernel-dev-ec00010972a0971b2c1da4fbe4e5c7d8ed1ecb05.zip
op-kernel-dev-ec00010972a0971b2c1da4fbe4e5c7d8ed1ecb05.tar.gz
Merge branch 'perf/urgent' into perf/core, to resolve conflict and to prepare for new patches
Conflicts: arch/x86/kernel/traps.c Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/ceph/messenger.c')
-rw-r--r--net/ceph/messenger.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index dac7f9b..1948d59 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -557,7 +557,7 @@ static int ceph_tcp_sendmsg(struct socket *sock, struct kvec *iov,
return r;
}
-static int ceph_tcp_sendpage(struct socket *sock, struct page *page,
+static int __ceph_tcp_sendpage(struct socket *sock, struct page *page,
int offset, size_t size, bool more)
{
int flags = MSG_DONTWAIT | MSG_NOSIGNAL | (more ? MSG_MORE : MSG_EOR);
@@ -570,6 +570,24 @@ static int ceph_tcp_sendpage(struct socket *sock, struct page *page,
return ret;
}
+static int ceph_tcp_sendpage(struct socket *sock, struct page *page,
+ int offset, size_t size, bool more)
+{
+ int ret;
+ struct kvec iov;
+
+ /* sendpage cannot properly handle pages with page_count == 0,
+ * we need to fallback to sendmsg if that's the case */
+ if (page_count(page) >= 1)
+ return __ceph_tcp_sendpage(sock, page, offset, size, more);
+
+ iov.iov_base = kmap(page) + offset;
+ iov.iov_len = size;
+ ret = ceph_tcp_sendmsg(sock, &iov, 1, size, more);
+ kunmap(page);
+
+ return ret;
+}
/*
* Shutdown/close the socket for the given connection.
OpenPOWER on IntegriCloud