Btrfs: don't loop in allocator for space cache
The space cache needs to have contiguous allocations, and the allocator tries to
make allocations by reducing the amount of bytes requested and re-searching.
But this just makes us waste time when we are very fragmented, so if we can't
find our space just exit, don't bother trying to search again. Thanks,
Signed-off-by: Josef Bacik <[email protected]>
Signed-off-by: Chris Mason <[email protected]>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index e0dfe35..d6b5ef4 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7337,7 +7337,7 @@
u64 empty_size, u64 hint_byte,
struct btrfs_key *ins, int is_data, int delalloc)
{
- bool final_tried = false;
+ bool final_tried = num_bytes == min_alloc_size;
u64 flags;
int ret;
