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>

1 files changed, 3 insertions, 0 deletions

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;