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-rw-r--r--fs/btrfs/extent-tree.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index a5f1421eeee..4eb7d2ba38f 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3510,6 +3510,20 @@ again:
u64 profile = btrfs_get_alloc_profile(root, 0);
u64 avail;
+ /*
+ * If we have a lot of space that's pinned, don't bother doing
+ * the overcommit dance yet and just commit the transaction.
+ */
+ avail = (space_info->total_bytes - space_info->bytes_used) * 8;
+ do_div(avail, 10);
+ if (space_info->bytes_pinned >= avail && flush && !trans &&
+ !committed) {
+ space_info->flush = 1;
+ flushing = true;
+ spin_unlock(&space_info->lock);
+ goto commit;
+ }
+
spin_lock(&root->fs_info->free_chunk_lock);
avail = root->fs_info->free_chunk_space;
@@ -3581,6 +3595,7 @@ again:
if (trans)
goto out;
+commit:
ret = -ENOSPC;
if (committed)
goto out;