55 lines
1.5 KiB
Diff
55 lines
1.5 KiB
Diff
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From 769671c6aeef3359498100f0ef31975706d99fca Mon Sep 17 00:00:00 2001
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From: Chris Mason <chris.mason@oracle.com>
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Date: Mon, 6 Feb 2012 05:06:18 -0500
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Subject: [PATCH 03/18] Allow extent_buffers to use more ram
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This changes free_some_buffers (called each time we allocate an extent
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buffer) to allow a higher hard limit on the number of extent buffers
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in use.
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Signed-off-by: Chris Mason <chris.mason@oracle.com>
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---
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extent_io.c | 10 ++++++----
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1 files changed, 6 insertions(+), 4 deletions(-)
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diff --git a/extent_io.c b/extent_io.c
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index 9990338..ebb35b2 100644
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--- a/extent_io.c
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+++ b/extent_io.c
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@@ -28,7 +28,8 @@
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#include "extent_io.h"
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#include "list.h"
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-u64 cache_max = 1024 * 1024 * 32;
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+u64 cache_soft_max = 1024 * 1024 * 256;
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+u64 cache_hard_max = 1 * 1024 * 1024 * 1024;
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void extent_io_tree_init(struct extent_io_tree *tree)
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{
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@@ -540,18 +541,19 @@ static int free_some_buffers(struct extent_io_tree *tree)
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struct extent_buffer *eb;
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struct list_head *node, *next;
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- if (tree->cache_size < cache_max)
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+ if (tree->cache_size < cache_soft_max)
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return 0;
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+
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list_for_each_safe(node, next, &tree->lru) {
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eb = list_entry(node, struct extent_buffer, lru);
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if (eb->refs == 1) {
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free_extent_buffer(eb);
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- if (tree->cache_size < cache_max)
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+ if (tree->cache_size < cache_hard_max)
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break;
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} else {
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list_move_tail(&eb->lru, &tree->lru);
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}
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- if (nrscan++ > 64)
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+ if (nrscan++ > 64 && tree->cache_size < cache_hard_max)
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break;
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}
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return 0;
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--
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1.7.6.233.gd79bc
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