From: Sage Weil <sage@newdream.net>
Date: Thu, 21 Aug 2008 19:58:12 +0000 (-0700)
Subject: kclient: fix snap_rwsem write/read redux
X-Git-Tag: v0.4~187
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=1669fe5ec799e91325f5af921e3c94c61eb549d2;p=ceph.git

kclient: fix snap_rwsem write/read redux
---

diff --git a/src/kernel/caps.c b/src/kernel/caps.c
index 0f32f99d60a..266a6c076a2 100644
--- a/src/kernel/caps.c
+++ b/src/kernel/caps.c
@@ -450,7 +450,7 @@ first:
 ack:
 		/* take snap_rwsem before session mutex */
 		if (!took_snap_rwsem) {
-			if (down_write_trylock(&mdsc->snap_rwsem) == 0) {
+			if (down_read_trylock(&mdsc->snap_rwsem) == 0) {
 				dout(10, "inverting snap/in locks on %p\n",
 				     inode);
 				spin_unlock(&inode->i_lock);