Author: hselasky
Date: Wed May 31 21:05:24 2017
New Revision: 319355
URL: https://svnweb.freebsd.org/changeset/base/319355
Log:
Minor code optimisation.
Avoid locking the global CUSE lock when the polling flags are zero.
MFC after: 1 week
Modified:
head/sys/fs/cuse/cuse.c
Modified: head/sys/fs/cuse/cuse.c
==============================================================================
--- head/sys/fs/cuse/cuse.c Wed May 31 19:37:23 2017 (r319354)
+++ head/sys/fs/cuse/cuse.c Wed May 31 21:05:24 2017 (r319355)
@@ -1507,8 +1507,8 @@ cuse_client_kqfilter_poll(struct cdev *dev, struct cus
/* get the latest polling state from the server */
temp = cuse_client_poll(dev, POLLIN | POLLOUT, NULL);
- cuse_lock();
if (temp & (POLLIN | POLLOUT)) {
+ cuse_lock();
if (temp & POLLIN)
pcc->cflags |= CUSE_CLI_KNOTE_NEED_READ;
if (temp & POLLOUT)
@@ -1516,8 +1516,8 @@ cuse_client_kqfilter_poll(struct cdev *dev, struct cus
/* make sure the "knote" gets woken up */
cuse_server_wakeup_locked(pcc->server);
+ cuse_unlock();
}
- cuse_unlock();
}
}
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