---

yaml
---
r: 296525
b: refs/heads/master
c: 0cdf9e6
h: refs/heads/master
i:
  296523: b3dfd15
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e36b13cceb46136d849aeee06b4907ad3570ba78
+refs/heads/master: 0cdf9e60189a87356a865a96dbafc2240af5c91d

trunk/net/ceph/messenger.c

@@ -61,7 +61,6 @@ static char addr_str[ADDR_STR_COUNT][MAX_ADDR_STR_LEN];
 static atomic_t addr_str_seq = ATOMIC_INIT(0);
 
 static struct page *zero_page;		/* used in certain error cases */
-static void *zero_page_address;		/* kernel virtual addr of zero_page */
 
 const char *ceph_pr_addr(const struct sockaddr_storage *ss)
 {
@@ -111,9 +110,6 @@ void _ceph_msgr_exit(void)
 		ceph_msgr_wq = NULL;
 	}
 
-	BUG_ON(zero_page_address == NULL);
-	zero_page_address = NULL;
-
 	BUG_ON(zero_page == NULL);
 	kunmap(zero_page);
 	page_cache_release(zero_page);
@@ -126,9 +122,6 @@ int ceph_msgr_init(void)
 	zero_page = ZERO_PAGE(0);
 	page_cache_get(zero_page);
 
-	BUG_ON(zero_page_address != NULL);
-	zero_page_address = kmap(zero_page);
-
 	ceph_msgr_wq = alloc_workqueue("ceph-msgr", WQ_NON_REENTRANT, 0);
 	if (ceph_msgr_wq)
 		return 0;
@@ -889,7 +882,7 @@ static int write_partial_msg_pages(struct ceph_connection *con)
 		} else {
 			page = zero_page;
 			if (do_datacrc)
-				kaddr = zero_page_address;
+				kaddr = kmap(page);
 		}
 		len = min_t(int, max_write - con->out_msg_pos.page_pos,
 			    total_max_write);
@@ -908,7 +901,7 @@ static int write_partial_msg_pages(struct ceph_connection *con)
 				      con->out_msg_pos.page_pos + page_shift,
 				      len, 1);
 
-		if (do_datacrc && kaddr != zero_page_address)
+		if (do_datacrc)
 			kunmap(page);
 
 		if (ret <= 0)