The patch below does not apply to the 3.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From e1ee60fd89670da61b0a4bda59f8ffb2b8abea63 Mon Sep 17 00:00:00 2001
From: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
Date: Tue, 27 May 2014 12:48:55 -0400
Subject: [PATCH] ext4: fix ZERO_RANGE test failure in data journalling
xfstests generic/091 is failing when mounting ext4 with data=journal.
I think that this regression is same problem that occurred prior to collapse
range issue. So ZERO RANGE also need to call ext4_force_commit as
collapse range.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
Signed-off-by: Ashish Sangwan <a.sangwan@xxxxxxxxxxx>
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 5bbe425640da..4da228a0e6d0 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4741,6 +4741,13 @@ static long ext4_zero_range(struct file *file, loff_t offset,
if (!S_ISREG(inode->i_mode))
return -EINVAL;
+ /* Call ext4_force_commit to flush all data in case of data=journal. */
+ if (ext4_should_journal_data(inode)) {
+ ret = ext4_force_commit(inode->i_sb);
+ if (ret)
+ return ret;
+ }
+
/*
* Write out all dirty pages to avoid race conditions
* Then release them.
--
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