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Btrfs: fix a bug on overcommit stuff 

When overcommitting, we should check the sum of pinned space and
bytes for delayed item.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
This commit is contained in:
Liu Bo 2012-02-16 18:34:39 +08:00 committed by David Sterba
parent 9d47c7671d
commit d9b0218f6c
1 changed files with 4 additions and 1 deletions
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5
fs/btrfs/extent-tree.c
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@ -3611,12 +3611,15 @@ static int may_commit_transaction(struct btrfs_root *root,
if (space_info != delayed_rsv->space_info)
return -ENOSPC;
spin_lock(&space_info->lock);
spin_lock(&delayed_rsv->lock);
if (delayed_rsv->size < bytes) {
if (space_info->bytes_pinned + delayed_rsv->size < bytes) {
spin_unlock(&delayed_rsv->lock);
spin_unlock(&space_info->lock);
return -ENOSPC;
}
spin_unlock(&delayed_rsv->lock);
spin_unlock(&space_info->lock);
commit:
trans = btrfs_join_transaction(root);