linux-ext4 - [PATCH] ext4: return FIEMAP_EXTENT_UNKNOWN if an extent is delayed allocations

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Date:	Thu, 06 Jun 2013 21:31:49 +0800
From:	Jeff Liu <jeff.liu@...cle.com>
To:	linux-ext4@...r.kernel.org
CC:	tytso@....edu
Subject: [PATCH] ext4: return FIEMAP_EXTENT_UNKNOWN if an extent is delayed
 allocations

From: Jie Liu <jeff.liu@...cle.com>

Return the FIEMAP_EXTENT_UNKNOWN flag as well except the
FIEMAP_EXTENT_DELALLOC because the data location of an
delayed allocation extent is unknown.

Signed-off-by: Jie Liu <jeff.liu@...cle.com>
---
 fs/ext4/extents.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index bc0f191..47e17b1 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2125,7 +2125,8 @@ static int ext4_fill_fiemap_extents(struct inode *inode,
 		next_del = ext4_find_delayed_extent(inode, &es);
 		if (!exists && next_del) {
 			exists = 1;
-			flags |= FIEMAP_EXTENT_DELALLOC;
+			flags |= (FIEMAP_EXTENT_DELALLOC |
+				  FIEMAP_EXTENT_UNKNOWN);
 		}
 		up_read(&EXT4_I(inode)->i_data_sem);
 
-- 
1.7.9.5
--
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