btrfs: raid56: use list_last_entry() at cache_rbio()
Instead of using list_entry() against the list's prev entry, use list_last_entry(), which removes the need to know the last member is accessed through the prev list pointer and the naming makes it easier to reason about what we are doing. Reviewed-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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David Sterba
parent
d26d16a432
commit
c5d12d5b62
@@ -577,9 +577,9 @@ static void cache_rbio(struct btrfs_raid_bio *rbio)
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if (table->cache_size > RBIO_CACHE_SIZE) {
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struct btrfs_raid_bio *found;
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found = list_entry(table->stripe_cache.prev,
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struct btrfs_raid_bio,
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stripe_cache);
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found = list_last_entry(&table->stripe_cache,
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struct btrfs_raid_bio,
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stripe_cache);
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if (found != rbio)
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__remove_rbio_from_cache(found);
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