From: Theodore Ts'o <tytso@mit.edu>
Date: Mon, 11 Apr 2011 02:30:07 +0000 (-0400)
Subject: ext4: fix data corruption regression by reverting commit 6de9843dab3f
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c8205636029fc869278c55b7336053b3e7ae3ef4;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

ext4: fix data corruption regression by reverting commit 6de9843dab3f

Revert commit 6de9843dab3f2a1d4d66d80aa9e5782f80977d20, since it
caused a data corruption regression with BitTorrent downloads.  Thanks
to Damien for discovering and bisecting to find the problem commit.

https://bugzilla.kernel.org/show_bug.cgi?id=32972

Reported-by: Damien Grassart <damien@grassart.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 5560f78690a..9c8cf811d93 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2502,6 +2502,7 @@ static int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
 		 * for partial write.
 		 */
 		set_buffer_new(bh);
+		set_buffer_mapped(bh);
 	}
 	return 0;
 }