>From 779e1322d47a5f28364343446853f24ac145e9ff Mon Sep 17 00:00:00 2001
From: Dmitry Monakhov <dmonakhov@gmail.com>
Date: Fri, 8 Nov 2019 18:08:49 +0300
Subject: [PATCH] ext4: Don't cache clean inline extents
Signed-off-by: Dmitry Monakhov <dmonakhov@gmail.com>
---
fs/ext4/inode.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index abaaf7d..6839ac4 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -45,6 +45,7 @@
#include "xattr.h"
#include "acl.h"
#include "truncate.h"
+#include "ext4_extents.h"
#include <trace/events/ext4.h>
@@ -584,11 +585,13 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
ext4_es_scan_range(inode, &ext4_es_is_delayed, map->m_lblk,
map->m_lblk + map->m_len - 1))
status |= EXTENT_STATUS_DELAYED;
- ret = ext4_es_insert_extent(inode, map->m_lblk,
- map->m_len, map->m_pblk, status);
- if (ret < 0)
- retval = ret;
+ /* Don't cache if there are no external extent blocks */
+ if ((status & EXTENT_STATUS_DELAYED) || ext_depth(inode)) {
+ ret = ext4_es_insert_extent(inode, map->m_lblk,
+ map->m_len, map->m_pblk, status);
+ if (ret < 0)
+ retval = ret;
+ }
}
up_read((&EXT4_I(inode)->i_data_sem));
--
2.7.4