GFS2: Set GFP_NOFS when allocating page on write

We need to ensure that we always set GFP_NOFS in this one
particular case when allocating pages for write.

Reported-by: Fabio M. Di Nitto <fdinitto@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index 6e4ea36..4ddab67 100644 (file)
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -675,6 +675,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
                goto out_trans_fail;
 
        error = -ENOMEM;
+       flags |= AOP_FLAG_NOFS;
        page = grab_cache_page_write_begin(mapping, index, flags);
        *pagep = page;
        if (unlikely(!page))