From b33a514a6d06e78194c4f1efaec11fde2de676c0 Mon Sep 17 00:00:00 2001
From: Josef Bacik <josef@redhat.com>
Date: Mon, 8 Aug 2011 12:50:18 -0400
Subject: [PATCH] Btrfs: kill unused parts of block_rsv
The priority and refill_used flags are not used anymore, and neither is the
usage counter, so just remove them from btrfs_block_rsv.
Signed-off-by: Josef Bacik <josef@redhat.com>
---
fs/btrfs/ctree.h | 3 ---
fs/btrfs/extent-tree.c | 23 ++++++-----------------
fs/btrfs/relocation.c | 2 --
3 files changed, 6 insertions(+), 22 deletions(-)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index c5ceba4078cce..58a06dea4791b 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -774,9 +774,6 @@ struct btrfs_block_rsv {
u64 reserved;
struct btrfs_space_info *space_info;
spinlock_t lock;
- atomic_t usage;
- unsigned int priority:8;
- unsigned int refill_used:1;
unsigned int full:1;
};
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 30c0558eae845..5395cc6392708 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3659,8 +3659,6 @@ void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv)
{
memset(rsv, 0, sizeof(*rsv));
spin_lock_init(&rsv->lock);
- atomic_set(&rsv->usage, 1);
- rsv->priority = 6;
}
struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root)
@@ -3681,10 +3679,8 @@ struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root)
void btrfs_free_block_rsv(struct btrfs_root *root,
struct btrfs_block_rsv *rsv)
{
- if (rsv && atomic_dec_and_test(&rsv->usage)) {
- btrfs_block_rsv_release(root, rsv, (u64)-1);
- kfree(rsv);
- }
+ btrfs_block_rsv_release(root, rsv, (u64)-1);
+ kfree(rsv);
}
int btrfs_block_rsv_add(struct btrfs_trans_handle *trans,
@@ -3734,13 +3730,10 @@ int btrfs_block_rsv_check(struct btrfs_trans_handle *trans,
if (!ret)
return 0;
- if (block_rsv->refill_used) {
- ret = reserve_metadata_bytes(trans, root, block_rsv,
- num_bytes, 0);
- if (!ret) {
- block_rsv_add_bytes(block_rsv, num_bytes, 0);
- return 0;
- }
+ ret = reserve_metadata_bytes(trans, root, block_rsv, num_bytes, 0);
+ if (!ret) {
+ block_rsv_add_bytes(block_rsv, num_bytes, 0);
+ return 0;
}
if (commit_trans) {
@@ -3859,16 +3852,12 @@ static void init_global_block_rsv(struct btrfs_fs_info *fs_info)
space_info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_SYSTEM);
fs_info->chunk_block_rsv.space_info = space_info;
- fs_info->chunk_block_rsv.priority = 10;
space_info = __find_space_info(fs_info, BTRFS_BLOCK_GROUP_METADATA);
fs_info->global_block_rsv.space_info = space_info;
- fs_info->global_block_rsv.priority = 10;
- fs_info->global_block_rsv.refill_used = 1;
fs_info->delalloc_block_rsv.space_info = space_info;
fs_info->trans_block_rsv.space_info = space_info;
fs_info->empty_block_rsv.space_info = space_info;
- fs_info->empty_block_rsv.priority = 10;
fs_info->extent_root->block_rsv = &fs_info->global_block_rsv;
fs_info->csum_root->block_rsv = &fs_info->global_block_rsv;
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 545b04358249a..aeaed99e9cfea 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3650,8 +3650,6 @@ int prepare_to_relocate(struct reloc_control *rc)
if (ret)
return ret;
- rc->block_rsv->refill_used = 1;
-
memset(&rc->cluster, 0, sizeof(rc->cluster));
rc->search_start = rc->block_group->key.objectid;
rc->extents_found = 0;
--
2.39.5