Btrfs: remove bytes argument from do_chunk_alloc
Josef Bacik [Wed, 12 Sep 2012 18:08:47 +0000 (14:08 -0400)]
Everybody is just making stuff up, and it's just used to see if we really do
need to alloc a chunk, and since we do this when we already know we really
do it's just a waste of space.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>

fs/btrfs/extent-tree.c

index 254fd32..0bc83b3 100644 (file)
@@ -94,8 +94,8 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
                                     u64 flags, struct btrfs_disk_key *key,
                                     int level, struct btrfs_key *ins);
 static int do_chunk_alloc(struct btrfs_trans_handle *trans,
-                         struct btrfs_root *extent_root, u64 alloc_bytes,
-                         u64 flags, int force);
+                         struct btrfs_root *extent_root, u64 flags,
+                         int force);
 static int find_next_key(struct btrfs_path *path, int level,
                         struct btrfs_key *key);
 static void dump_space_info(struct btrfs_space_info *info, u64 bytes,
@@ -3404,7 +3404,6 @@ alloc:
                                return PTR_ERR(trans);
 
                        ret = do_chunk_alloc(trans, root->fs_info->extent_root,
-                                            bytes + 2 * 1024 * 1024,
                                             alloc_target,
                                             CHUNK_ALLOC_NO_FORCE);
                        btrfs_end_transaction(trans, root);
@@ -3486,8 +3485,7 @@ static void force_metadata_allocation(struct btrfs_fs_info *info)
 }
 
 static int should_alloc_chunk(struct btrfs_root *root,
-                             struct btrfs_space_info *sinfo, u64 alloc_bytes,
-                             int force)
+                             struct btrfs_space_info *sinfo, int force)
 {
        struct btrfs_block_rsv *global_rsv = &root->fs_info->global_block_rsv;
        u64 num_bytes = sinfo->total_bytes - sinfo->bytes_readonly;
@@ -3518,7 +3516,7 @@ static int should_alloc_chunk(struct btrfs_root *root,
                        return 1;
        }
 
-       if (num_allocated + alloc_bytes < div_factor(num_bytes, 8))
+       if (num_allocated + 2 * 1024 * 1024 < div_factor(num_bytes, 8))
                return 0;
        return 1;
 }
@@ -3568,8 +3566,7 @@ static void check_system_chunk(struct btrfs_trans_handle *trans,
 }
 
 static int do_chunk_alloc(struct btrfs_trans_handle *trans,
-                         struct btrfs_root *extent_root, u64 alloc_bytes,
-                         u64 flags, int force)
+                         struct btrfs_root *extent_root, u64 flags, int force)
 {
        struct btrfs_space_info *space_info;
        struct btrfs_fs_info *fs_info = extent_root->fs_info;
@@ -3593,7 +3590,7 @@ again:
                return 0;
        }
 
-       if (!should_alloc_chunk(extent_root, space_info, alloc_bytes, force)) {
+       if (!should_alloc_chunk(extent_root, space_info, force)) {
                spin_unlock(&space_info->lock);
                return 0;
        } else if (space_info->chunk_alloc) {
@@ -3869,7 +3866,6 @@ static int flush_space(struct btrfs_root *root,
                        break;
                }
                ret = do_chunk_alloc(trans, root->fs_info->extent_root,
-                                    num_bytes,
                                     btrfs_get_alloc_profile(root, 0),
                                     CHUNK_ALLOC_NO_FORCE);
                btrfs_end_transaction(trans, root);
@@ -5868,8 +5864,7 @@ loop:
                index = 0;
                loop++;
                if (loop == LOOP_ALLOC_CHUNK) {
-                       ret = do_chunk_alloc(trans, root, num_bytes +
-                                            2 * 1024 * 1024, data,
+                       ret = do_chunk_alloc(trans, root, data,
                                             CHUNK_ALLOC_FORCE);
                        /*
                         * Do not bail out on ENOSPC since we
@@ -7269,7 +7264,7 @@ int btrfs_set_block_group_ro(struct btrfs_root *root,
 
        alloc_flags = update_block_group_flags(root, cache->flags);
        if (alloc_flags != cache->flags) {
-               ret = do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags,
+               ret = do_chunk_alloc(trans, root, alloc_flags,
                                     CHUNK_ALLOC_FORCE);
                if (ret < 0)
                        goto out;
@@ -7279,7 +7274,7 @@ int btrfs_set_block_group_ro(struct btrfs_root *root,
        if (!ret)
                goto out;
        alloc_flags = get_alloc_profile(root, cache->space_info->flags);
-       ret = do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags,
+       ret = do_chunk_alloc(trans, root, alloc_flags,
                             CHUNK_ALLOC_FORCE);
        if (ret < 0)
                goto out;
@@ -7293,7 +7288,7 @@ int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans,
                            struct btrfs_root *root, u64 type)
 {
        u64 alloc_flags = get_alloc_profile(root, type);
-       return do_chunk_alloc(trans, root, 2 * 1024 * 1024, alloc_flags,
+       return do_chunk_alloc(trans, root, alloc_flags,
                              CHUNK_ALLOC_FORCE);
 }