From: Jan Kara <jack@suse.cz>
Date: Wed, 10 Aug 2016 14:42:53 +0000 (+0200)
Subject: ext2: Return BH_New buffers for zeroed blocks
X-Git-Tag: v4.14-rc1~1761^2~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e568df6b84ff05a22467503afc11bee7a6ba0700;p=platform%2Fkernel%2Flinux-rpi.git

ext2: Return BH_New buffers for zeroed blocks

So far we did not return BH_New buffers from ext2_get_blocks() when we
allocated and zeroed-out a block for DAX inode to avoid racy zeroing in
DAX code. This zeroing is gone these days so we can remove the
workaround.

Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 0093ea2..f073bfc 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -751,9 +751,8 @@ static int ext2_get_blocks(struct inode *inode,
 			mutex_unlock(&ei->truncate_mutex);
 			goto cleanup;
 		}
-	} else {
-		*new = true;
 	}
+	*new = true;
 
 	ext2_splice_branch(inode, iblock, partial, indirect_blks, count);
 	mutex_unlock(&ei->truncate_mutex);