From: Li Wang <liwang@ubuntukylin.com>
Date: Wed, 27 Nov 2013 14:28:13 +0000 (+0800)
Subject: ceph: Clean up if error occurred in finish_read()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f36132a75aafd0086aeb0eacf348654138d56b49;p=deliverable%2Flinux.git

ceph: Clean up if error occurred in finish_read()

Clean up if error occurred rather than going through normal process

Signed-off-by: Li Wang <liwang@ubuntukylin.com>
Signed-off-by: Yunchuan Wen <yunchuanwen@ubuntukylin.com>
Signed-off-by: Sage Weil <sage@inktank.com>
---

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index ec3ba43b9faa..c346b8479f99 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -256,6 +256,8 @@ static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg)
 	for (i = 0; i < num_pages; i++) {
 		struct page *page = osd_data->pages[i];
 
+		if (rc < 0)
+			goto unlock;
 		if (bytes < (int)PAGE_CACHE_SIZE) {
 			/* zero (remainder of) page */
 			int s = bytes < 0 ? 0 : bytes;
@@ -266,6 +268,7 @@ static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg)
 		flush_dcache_page(page);
 		SetPageUptodate(page);
 		ceph_readpage_to_fscache(inode, page);
+unlock:
 		unlock_page(page);
 		page_cache_release(page);
 		bytes -= PAGE_CACHE_SIZE;