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-rw-r--r--fs/btrfs/free-space-cache.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 60d684266959..42f4015988ec 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -1016,14 +1016,18 @@ static void recalculate_thresholds(struct btrfs_block_group_cache *block_group)
u64 max_bytes;
u64 bitmap_bytes;
u64 extent_bytes;
+ u64 size = block_group->key.offset;
/*
* The goal is to keep the total amount of memory used per 1gb of space
* at or below 32k, so we need to adjust how much memory we allow to be
* used by extent based free space tracking
*/
- max_bytes = MAX_CACHE_BYTES_PER_GIG *
- (div64_u64(block_group->key.offset, 1024 * 1024 * 1024));
+ if (size < 1024 * 1024 * 1024)
+ max_bytes = MAX_CACHE_BYTES_PER_GIG;
+ else
+ max_bytes = MAX_CACHE_BYTES_PER_GIG *
+ div64_u64(size, 1024 * 1024 * 1024);
/*
* we want to account for 1 more bitmap than what we have so we can make