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>

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index c5ceba4..58a06de 100644 (file)
--- 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 30c0558..5395cc6 100644 (file)
--- 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 545b043..aeaed99 100644 (file)
--- 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;