linux-kernel - [ 019/100] Btrfs: copy everything if weve created an inline extent

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Date:	Tue, 12 Mar 2013 15:31:04 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Josef Bacik <jbacik@...ionio.com>
Subject: [ 019/100] Btrfs: copy everything if weve created an inline extent

3.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Josef Bacik <jbacik@...ionio.com>

commit bdc20e67e82cfc4901d3a5a0d79104b0e2296d83 upstream.

I noticed while looking into a tree logging bug that we aren't logging inline
extents properly.  Since this requires copying and it shouldn't happen too often
just force us to copy everything for the inode into the tree log when we have an
inline extent.  With this patch we have valid data after a crash when we write
an inline extent.  Thanks,

Signed-off-by: Josef Bacik <jbacik@...ionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/btrfs/inode.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -265,6 +265,7 @@ static noinline int cow_file_range_inlin
 		return 1;
 	}
 
+	set_bit(BTRFS_INODE_NEEDS_FULL_SYNC, &BTRFS_I(inode)->runtime_flags);
 	btrfs_delalloc_release_metadata(inode, end + 1 - start);
 	btrfs_drop_extent_cache(inode, start, aligned_end - 1, 0);
 	return 0;


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