From 1b22bad779be7fe07242be04749ec969164528b8 Mon Sep 17 00:00:00 2001
From: Alexandre Oliva <oliva@lsd.ic.unicamp.br>
Date: Wed, 30 Nov 2011 13:43:00 -0500
Subject: [PATCH] Btrfs: start search for new cluster at the beginning
Instead of starting at zero (offset is always zero), request a cluster
starting at search_start, that denotes the beginning of the current
block group.
Signed-off-by: Alexandre Oliva <oliva@lsd.ic.unicamp.br>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
---
fs/btrfs/extent-tree.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index b7e5f6898d07c0..97c12067a4b091 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5301,10 +5301,8 @@ alloc:
spin_lock(&last_ptr->refill_lock);
if (last_ptr->block_group &&
(last_ptr->block_group->ro ||
- !block_group_bits(last_ptr->block_group, data))) {
- offset = 0;
+ !block_group_bits(last_ptr->block_group, data)))
goto refill_cluster;
- }
offset = btrfs_alloc_from_cluster(block_group, last_ptr,
num_bytes, search_start);
@@ -5355,7 +5353,7 @@ refill_cluster:
/* allocate a cluster in this block group */
ret = btrfs_find_space_cluster(trans, root,
block_group, last_ptr,
- offset, num_bytes,
+ search_start, num_bytes,
empty_cluster + empty_size);
if (ret == 0) {
/*
--
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