linux-ext4 - [PATCH] Allow extents equal to max

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Date:	Mon, 30 May 2016 13:23:47 -0500
From:	Jun He <jhe@...wisc.edu>
To:	linux-ext4@...r.kernel.org
Cc:	tytso@....edu, Jun He <jhe@...wisc.edu>
Subject: [PATCH] Allow extents equal to max_zeroout to be zero-ed

Just to be consistent with the rest of the code: if size == max_zeroout,
then allow it to be zero-ed.

Signed-off-by: Jun He <jhe@...wisc.edu>
---
 fs/ext4/extents.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 2a2eef9..dc0b04c 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -3609,7 +3609,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
 				goto out;
 			split_map.m_lblk = map->m_lblk;
 			split_map.m_len = allocated;
-		} else if (map->m_lblk - ee_block + map->m_len < max_zeroout) {
+		} else if (map->m_lblk - ee_block + map->m_len <= max_zeroout) {
 			/* case 2 */
 			if (map->m_lblk != ee_block) {
 				zero_ex.ee_block = ex->ee_block;
--
1.9.1

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