diff options
| author |   Alex Elder <elder@dreamhost.com> | 2012-02-15 07:43:55 -0600 |
|---|---|---|
| committer | Alex Elder <elder@dreamhost.com> | 2012-03-22 10:47:51 -0500 |
| commit | 84495f496170a73ed79667b7fbf91947b7f47c87 (patch) | |
| tree | c36204466b0dc85b39c187f78275c3b25925b15c /net | |
| parent | libceph: small refactor in write_partial_kvec() (diff) | |
| download | linux-dev-84495f496170a73ed79667b7fbf91947b7f47c87.tar.xz linux-dev-84495f496170a73ed79667b7fbf91947b7f47c87.zip | |
libceph: some simple changes
Nothing too big here.
- define the size of the buffer used for consuming ignored
incoming data using a symbolic constant
- simplify the condition determining whether to unmap the page
in write_partial_msg_pages(): do it for crc but not if the
page is the zero page
Signed-off-by: Alex Elder <elder@dreamhost.com>
Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ceph/messenger.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index e8f236e87f38..1a22975945da 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -38,6 +38,11 @@ static char tag_keepalive = CEPH_MSGR_TAG_KEEPALIVE; static struct lock_class_key socket_class; #endif +/* + * When skipping (ignoring) a block of input we read it into a "skip + * buffer," which is this many bytes in size. + */ +#define SKIP_BUF_SIZE 1024 static void queue_con(struct ceph_connection *con); static void con_work(struct work_struct *); @@ -892,8 +897,7 @@ static int write_partial_msg_pages(struct ceph_connection *con) MSG_DONTWAIT | MSG_NOSIGNAL | MSG_MORE); - if (do_crc && - (msg->pages || msg->pagelist || msg->bio || in_trail)) + if (do_crc && kaddr != zero_page_address) kunmap(page); if (ret == -EAGAIN) @@ -1982,8 +1986,9 @@ more: * * FIXME: there must be a better way to do this! */ - static char buf[1024]; - int skip = min(1024, -con->in_base_pos); + static char buf[SKIP_BUF_SIZE]; + int skip = min((int) sizeof (buf), -con->in_base_pos); + dout("skipping %d / %d bytes\n", skip, -con->in_base_pos); ret = ceph_tcp_recvmsg(con->sock, buf, skip); if (ret <= 0) |