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btrfs: remove unused function heads_to_leaves

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There's no callers in-tree anymore since commit 64403612b7 ("btrfs:
rework btrfs_check_space_for_delayed_refs")

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
YueHaibing 2020-05-06 21:22:39 +08:00 • committed by David Sterba
parent fb8521caa8
commit eec5b6e097
1 changed files with 0 additions and 16 deletions
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16
fs/btrfs/extent-tree.c
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@ -2114,22 +2114,6 @@ static u64 find_middle(struct rb_root *root)
}
#endif
static inline u64 heads_to_leaves(struct btrfs_fs_info *fs_info, u64 heads)
{
u64 num_bytes;
num_bytes = heads * (sizeof(struct btrfs_extent_item) +
sizeof(struct btrfs_extent_inline_ref));
if (!btrfs_fs_incompat(fs_info, SKINNY_METADATA))
num_bytes += heads * sizeof(struct btrfs_tree_block_info);
/*
* We don't ever fill up leaves all the way so multiply by 2 just to be
* closer to what we're really going to want to use.
*/
return div_u64(num_bytes, BTRFS_LEAF_DATA_SIZE(fs_info));
}
/*
* Takes the number of bytes to be csumm'ed and figures out how many leaves it
* would require to store the csums for that many bytes.