Because xattrs can be over a page in size, we need to handle possible
krealloc errors to avoid warnings

The warning:
   WARNING: CPU: 1 PID: 20255 at mm/page_alloc.c:3446
                 get_page_from_freelist+0x100b/0x1690

is caused when sizes larger that a page are allocated with the
__GFP_NOFAIL flag option.  We encounter this error now because attr
values can be up to 64k in size.  So we cannot use __GFP_NOFAIL, and
we need to handle the error code if the allocation fails.

Signed-off-by: Allison Henderson <redacted>
---
 fs/xfs/xfs_log_recover.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 97f3130..295a5c6 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c

@@ -2061,7 +2061,10 @@ xlog_recover_add_to_cont_trans(
 	old_ptr = item->ri_buf[item->ri_cnt-1].i_addr;
 	old_len = item->ri_buf[item->ri_cnt-1].i_len;
 
-	ptr = krealloc(old_ptr, len + old_len, GFP_KERNEL | __GFP_NOFAIL);
+	ptr = krealloc(old_ptr, len + old_len, GFP_KERNEL);
+	if (ptr == NULL)
+		return -ENOMEM;
+
 	memcpy(&ptr[old_len], dp, len);
 	item->ri_buf[item->ri_cnt-1].i_len += len;
 	item->ri_buf[item->ri_cnt-1].i_addr = ptr;

-- 
2.7.4