ceph: don't SetPageError on writepage errors

We already mark the mapping in that case, and doing this can cause
false positives to occur at fsync time, as well as spurious read
errors.
Signed-off-by: NJeff Layton <jlayton@kernel.org>
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

fs/ceph/addr.c

@@ -573,7 +573,7 @@ static u64 get_writepages_data_length(struct inode *inode,
 /*
  * Write a single page, but leave the page locked.
  *
- * If we get a write error, set the page error bit, but still adjust the
+ * If we get a write error, mark the mapping for error, but still adjust the
  * dirty page accounting (i.e., page is no longer dirty).
  */
 static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
@@ -648,7 +648,6 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
 			fsc->blacklisted = true;
 		dout("writepage setting page/mapping error %d %p\n",
 		     err, page);
-		SetPageError(page);
 		mapping_set_error(&inode->i_data, err);
 		wbc->pages_skipped++;
 	} else {