2c5c7c6753
- rebuild extent records - fix block group accounting - reset csums for rescue nodatasum mount - prune corrupt extent allocation tree blocks - device scanning fixes for dm and multipath - initrd support: move btrfs device scan after block device setup - documentation updates - add csize for file commpressed size - updated restore utility OBS-URL: https://build.opensuse.org/package/show/filesystems/btrfsprogs?expand=0&rev=118
55 lines
1.5 KiB
Diff
55 lines
1.5 KiB
Diff
From 769671c6aeef3359498100f0ef31975706d99fca Mon Sep 17 00:00:00 2001
|
|
From: Chris Mason <chris.mason@oracle.com>
|
|
Date: Mon, 6 Feb 2012 05:06:18 -0500
|
|
Subject: [PATCH 03/18] Allow extent_buffers to use more ram
|
|
|
|
This changes free_some_buffers (called each time we allocate an extent
|
|
buffer) to allow a higher hard limit on the number of extent buffers
|
|
in use.
|
|
|
|
Signed-off-by: Chris Mason <chris.mason@oracle.com>
|
|
---
|
|
extent_io.c | 10 ++++++----
|
|
1 files changed, 6 insertions(+), 4 deletions(-)
|
|
|
|
diff --git a/extent_io.c b/extent_io.c
|
|
index 9990338..ebb35b2 100644
|
|
--- a/extent_io.c
|
|
+++ b/extent_io.c
|
|
@@ -28,7 +28,8 @@
|
|
#include "extent_io.h"
|
|
#include "list.h"
|
|
|
|
-u64 cache_max = 1024 * 1024 * 32;
|
|
+u64 cache_soft_max = 1024 * 1024 * 256;
|
|
+u64 cache_hard_max = 1 * 1024 * 1024 * 1024;
|
|
|
|
void extent_io_tree_init(struct extent_io_tree *tree)
|
|
{
|
|
@@ -540,18 +541,19 @@ static int free_some_buffers(struct extent_io_tree *tree)
|
|
struct extent_buffer *eb;
|
|
struct list_head *node, *next;
|
|
|
|
- if (tree->cache_size < cache_max)
|
|
+ if (tree->cache_size < cache_soft_max)
|
|
return 0;
|
|
+
|
|
list_for_each_safe(node, next, &tree->lru) {
|
|
eb = list_entry(node, struct extent_buffer, lru);
|
|
if (eb->refs == 1) {
|
|
free_extent_buffer(eb);
|
|
- if (tree->cache_size < cache_max)
|
|
+ if (tree->cache_size < cache_hard_max)
|
|
break;
|
|
} else {
|
|
list_move_tail(&eb->lru, &tree->lru);
|
|
}
|
|
- if (nrscan++ > 64)
|
|
+ if (nrscan++ > 64 && tree->cache_size < cache_hard_max)
|
|
break;
|
|
}
|
|
return 0;
|
|
--
|
|
1.7.6.233.gd79bc
|
|
|