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Btrfs: don't loop in allocator for space cache

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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>
This commit is contained in:
Josef Bacik 2015-09-25 16:13:11 -04:00 committed by Chris Mason
parent 3204d33cda
commit 36af4e0737
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/extent-tree.c
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@ -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;