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Btrfs: use slabs for delayed reference allocation

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The delayed reference allocation is in the fast path of the IO, so use slabs
to improve the speed of the allocation.

And besides that, it can do check for leaked objects when the module is removed.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
This commit is contained in:
Miao Xie
2012-11-21 02:21:28 +00:00
committed by Josef Bacik
parent 6f60cbd3ae
commit 78a6184a3f
5 changed files with 115 additions and 21 deletions
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2
fs/btrfs/disk-io.c
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@@ -3614,7 +3614,7 @@ int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
continue;
}
kfree(head->extent_op);
btrfs_free_delayed_extent_op(head->extent_op);
delayed_refs->num_heads--;
if (list_empty(&head->cluster))
delayed_refs->num_heads_ready--;