btrfs: migrate the block-rsv code to block-rsv.c

This moves everything out of extent-tree.c to block-rsv.c.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 0 insertions, 246 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index eefdad883be8..668a61724e89 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4368,57 +4368,6 @@ static struct btrfs_block_rsv *get_block_rsv(
 	return block_rsv;
 }
 
-int btrfs_block_rsv_use_bytes(struct btrfs_block_rsv *block_rsv, u64 num_bytes)
-{
-	int ret = -ENOSPC;
-	spin_lock(&block_rsv->lock);
-	if (block_rsv->reserved >= num_bytes) {
-		block_rsv->reserved -= num_bytes;
-		if (block_rsv->reserved < block_rsv->size)
-			block_rsv->full = 0;
-		ret = 0;
-	}
-	spin_unlock(&block_rsv->lock);
-	return ret;
-}
-
-void btrfs_block_rsv_add_bytes(struct btrfs_block_rsv *block_rsv,
-			       u64 num_bytes, bool update_size)
-{
-	spin_lock(&block_rsv->lock);
-	block_rsv->reserved += num_bytes;
-	if (update_size)
-		block_rsv->size += num_bytes;
-	else if (block_rsv->reserved >= block_rsv->size)
-		block_rsv->full = 1;
-	spin_unlock(&block_rsv->lock);
-}
-
-int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info,
-			     struct btrfs_block_rsv *dest, u64 num_bytes,
-			     int min_factor)
-{
-	struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv;
-	u64 min_bytes;
-
-	if (global_rsv->space_info != dest->space_info)
-		return -ENOSPC;
-
-	spin_lock(&global_rsv->lock);
-	min_bytes = div_factor(global_rsv->size, min_factor);
-	if (global_rsv->reserved < min_bytes + num_bytes) {
-		spin_unlock(&global_rsv->lock);
-		return -ENOSPC;
-	}
-	global_rsv->reserved -= num_bytes;
-	if (global_rsv->reserved < global_rsv->size)
-		global_rsv->full = 0;
-	spin_unlock(&global_rsv->lock);
-
-	btrfs_block_rsv_add_bytes(dest, num_bytes, true);
-	return 0;
-}
-
 /**
  * btrfs_migrate_to_delayed_refs_rsv - transfer bytes to our delayed refs rsv.
  * @fs_info - the fs info for our fs.
@@ -4503,201 +4452,6 @@ int btrfs_delayed_refs_rsv_refill(struct btrfs_fs_info *fs_info,
 	return 0;
 }
 
-static u64 block_rsv_release_bytes(struct btrfs_fs_info *fs_info,
-				    struct btrfs_block_rsv *block_rsv,
-				    struct btrfs_block_rsv *dest, u64 num_bytes,
-				    u64 *qgroup_to_release_ret)
-{
-	struct btrfs_space_info *space_info = block_rsv->space_info;
-	u64 qgroup_to_release = 0;
-	u64 ret;
-
-	spin_lock(&block_rsv->lock);
-	if (num_bytes == (u64)-1) {
-		num_bytes = block_rsv->size;
-		qgroup_to_release = block_rsv->qgroup_rsv_size;
-	}
-	block_rsv->size -= num_bytes;
-	if (block_rsv->reserved >= block_rsv->size) {
-		num_bytes = block_rsv->reserved - block_rsv->size;
-		block_rsv->reserved = block_rsv->size;
-		block_rsv->full = 1;
-	} else {
-		num_bytes = 0;
-	}
-	if (block_rsv->qgroup_rsv_reserved >= block_rsv->qgroup_rsv_size) {
-		qgroup_to_release = block_rsv->qgroup_rsv_reserved -
-				    block_rsv->qgroup_rsv_size;
-		block_rsv->qgroup_rsv_reserved = block_rsv->qgroup_rsv_size;
-	} else {
-		qgroup_to_release = 0;
-	}
-	spin_unlock(&block_rsv->lock);
-
-	ret = num_bytes;
-	if (num_bytes > 0) {
-		if (dest) {
-			spin_lock(&dest->lock);
-			if (!dest->full) {
-				u64 bytes_to_add;
-
-				bytes_to_add = dest->size - dest->reserved;
-				bytes_to_add = min(num_bytes, bytes_to_add);
-				dest->reserved += bytes_to_add;
-				if (dest->reserved >= dest->size)
-					dest->full = 1;
-				num_bytes -= bytes_to_add;
-			}
-			spin_unlock(&dest->lock);
-		}
-		if (num_bytes)
-			btrfs_space_info_add_old_bytes(fs_info, space_info,
-						       num_bytes);
-	}
-	if (qgroup_to_release_ret)
-		*qgroup_to_release_ret = qgroup_to_release;
-	return ret;
-}
-
-int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src,
-			    struct btrfs_block_rsv *dst, u64 num_bytes,
-			    bool update_size)
-{
-	int ret;
-
-	ret = btrfs_block_rsv_use_bytes(src, num_bytes);
-	if (ret)
-		return ret;
-
-	btrfs_block_rsv_add_bytes(dst, num_bytes, update_size);
-	return 0;
-}
-
-void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type)
-{
-	memset(rsv, 0, sizeof(*rsv));
-	spin_lock_init(&rsv->lock);
-	rsv->type = type;
-}
-
-void btrfs_init_metadata_block_rsv(struct btrfs_fs_info *fs_info,
-				   struct btrfs_block_rsv *rsv,
-				   unsigned short type)
-{
-	btrfs_init_block_rsv(rsv, type);
-	rsv->space_info = btrfs_find_space_info(fs_info,
-					    BTRFS_BLOCK_GROUP_METADATA);
-}
-
-struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info,
-					      unsigned short type)
-{
-	struct btrfs_block_rsv *block_rsv;
-
-	block_rsv = kmalloc(sizeof(*block_rsv), GFP_NOFS);
-	if (!block_rsv)
-		return NULL;
-
-	btrfs_init_metadata_block_rsv(fs_info, block_rsv, type);
-	return block_rsv;
-}
-
-void btrfs_free_block_rsv(struct btrfs_fs_info *fs_info,
-			  struct btrfs_block_rsv *rsv)
-{
-	if (!rsv)
-		return;
-	btrfs_block_rsv_release(fs_info, rsv, (u64)-1);
-	kfree(rsv);
-}
-
-int btrfs_block_rsv_add(struct btrfs_root *root,
-			struct btrfs_block_rsv *block_rsv, u64 num_bytes,
-			enum btrfs_reserve_flush_enum flush)
-{
-	int ret;
-
-	if (num_bytes == 0)
-		return 0;
-
-	ret = btrfs_reserve_metadata_bytes(root, block_rsv, num_bytes, flush);
-	if (!ret)
-		btrfs_block_rsv_add_bytes(block_rsv, num_bytes, true);
-
-	return ret;
-}
-
-int btrfs_block_rsv_check(struct btrfs_block_rsv *block_rsv, int min_factor)
-{
-	u64 num_bytes = 0;
-	int ret = -ENOSPC;
-
-	if (!block_rsv)
-		return 0;
-
-	spin_lock(&block_rsv->lock);
-	num_bytes = div_factor(block_rsv->size, min_factor);
-	if (block_rsv->reserved >= num_bytes)
-		ret = 0;
-	spin_unlock(&block_rsv->lock);
-
-	return ret;
-}
-
-int btrfs_block_rsv_refill(struct btrfs_root *root,
-			   struct btrfs_block_rsv *block_rsv, u64 min_reserved,
-			   enum btrfs_reserve_flush_enum flush)
-{
-	u64 num_bytes = 0;
-	int ret = -ENOSPC;
-
-	if (!block_rsv)
-		return 0;
-
-	spin_lock(&block_rsv->lock);
-	num_bytes = min_reserved;
-	if (block_rsv->reserved >= num_bytes)
-		ret = 0;
-	else
-		num_bytes -= block_rsv->reserved;
-	spin_unlock(&block_rsv->lock);
-
-	if (!ret)
-		return 0;
-
-	ret = btrfs_reserve_metadata_bytes(root, block_rsv, num_bytes, flush);
-	if (!ret) {
-		btrfs_block_rsv_add_bytes(block_rsv, num_bytes, false);
-		return 0;
-	}
-
-	return ret;
-}
-
-u64 __btrfs_block_rsv_release(struct btrfs_fs_info *fs_info,
-			      struct btrfs_block_rsv *block_rsv,
-			      u64 num_bytes, u64 *qgroup_to_release)
-{
-	struct btrfs_block_rsv *global_rsv = &fs_info->global_block_rsv;
-	struct btrfs_block_rsv *delayed_rsv = &fs_info->delayed_refs_rsv;
-	struct btrfs_block_rsv *target = NULL;
-
-	/*
-	 * If we are the delayed_rsv then push to the global rsv, otherwise dump
-	 * into the delayed rsv if it is not full.
-	 */
-	if (block_rsv == delayed_rsv)
-		target = global_rsv;
-	else if (block_rsv != global_rsv && !delayed_rsv->full)
-		target = delayed_rsv;
-
-	if (target && block_rsv->space_info != target->space_info)
-		target = NULL;
-
-	return block_rsv_release_bytes(fs_info, block_rsv, target, num_bytes,
-				       qgroup_to_release);
-}
-
 /**
  * btrfs_inode_rsv_release - release any excessive reservation.
  * @inode - the inode we need to release from.