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Btrfs: fix callers of btrfs_block_rsv_migrate

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So btrfs_block_rsv_migrate just unconditionally calls block_rsv_migrate_bytes.
Not only this but it unconditionally changes the size of the block_rsv.  This
isn't a bug strictly speaking, but it makes truncate block rsv's look funny
because every time we migrate bytes over its size grows, even though we only
want it to be a specific size.  So collapse this into one function that takes an
update_size argument and make truncate and evict not update the size for
consistency sake.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik
2016-03-25 13:25:48 -04:00
committed by David Sterba
parent e40edf2da4
commit 25d609f86d
6 changed files with 18 additions and 25 deletions
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7
fs/btrfs/inode.c
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@@ -5264,7 +5264,7 @@ void btrfs_evict_inode(struct inode *inode)
if (steal_from_global) {
if (!btrfs_check_space_for_delayed_refs(trans, root))
ret = btrfs_block_rsv_migrate(global_rsv, rsv,
min_size);
min_size, 0);
else
ret = -ENOSPC;
}
@@ -9116,7 +9116,7 @@ static int btrfs_truncate(struct inode *inode)
/* Migrate the slack space for the truncate to our reserve */
ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv, rsv,
min_size);
min_size, 0);
BUG_ON(ret);
/*
@@ -9156,7 +9156,7 @@ static int btrfs_truncate(struct inode *inode)
}
ret = btrfs_block_rsv_migrate(&root->fs_info->trans_block_rsv,
rsv, min_size);
rsv, min_size, 0);
BUG_ON(ret); /* shouldn't happen */
trans->block_rsv = rsv;
}
@@ -9177,7 +9177,6 @@ static int btrfs_truncate(struct inode *inode)
ret = btrfs_end_transaction(trans, root);
btrfs_btree_balance_dirty(root);
}
out:
btrfs_free_block_rsv(root, rsv);