commit dabdb6408cb801644fa613c7432da012640b348c
author Josef Bacik <josef@redhat.com> Mon Aug 08 12:50:18 2011 -0400
committer Josef Bacik <josef@redhat.com> Wed Oct 19 15:12:34 2011 -0400
tree 846978b48af90315b14bf984d0b0a55a962eff6b
parent 6ab60601d518d563ca1a47eaa399096e69d3b64a

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

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index c5ceba4..58a06de 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -774,9 +774,6 @@
 	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;
 };
 

fs/btrfs/extent-tree.c

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 30c0558..5395cc6 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3659,8 +3659,6 @@
 {
 	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 @@
 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 @@
 	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 @@
 
 	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;

fs/btrfs/relocation.c

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 545b043..aeaed99 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3650,8 +3650,6 @@
 	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;