Commit 36af4e07 authored Sep 25, 2015 by Josef Bacik Committed by Chris Mason Oct 21, 2015

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 <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

parent 3204d33c

fs/btrfs/extent-tree.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -7337,7 +7337,7 @@ int btrfs_reserve_extent(struct btrfs_root *root,
		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;