linux-kernel - [PATCH 2/4] lru_cache: remove compiled out code

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Message-Id: <20221122134301.69258-3-christoph.boehmwalder@linbit.com>
Date:   Tue, 22 Nov 2022 14:42:59 +0100
From:   Christoph Böhmwalder 
        <christoph.boehmwalder@...bit.com>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     drbd-dev@...ts.linbit.com, linux-kernel@...r.kernel.org,
        Lars Ellenberg <lars.ellenberg@...bit.com>,
        Philipp Reisner <philipp.reisner@...bit.com>,
        linux-block@...r.kernel.org,
        Christoph Böhmwalder 
        <christoph.boehmwalder@...bit.com>
Subject: [PATCH 2/4] lru_cache: remove compiled out code

Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@...bit.com>
---
 lib/lru_cache.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/lib/lru_cache.c b/lib/lru_cache.c
index fec899386238..5dd5e4c00a23 100644
--- a/lib/lru_cache.c
+++ b/lib/lru_cache.c
@@ -60,17 +60,6 @@ int lc_try_lock(struct lru_cache *lc)
 	} while (unlikely (val == LC_PARANOIA));
 	/* Spin until no-one is inside a PARANOIA_ENTRY()/RETURN() section. */
 	return 0 == val;
-#if 0
-	/* Alternative approach, spin in case someone enters or leaves a
-	 * PARANOIA_ENTRY()/RETURN() section. */
-	unsigned long old, new, val;
-	do {
-		old = lc->flags & LC_PARANOIA;
-		new = old | LC_LOCKED;
-		val = cmpxchg(&lc->flags, old, new);
-	} while (unlikely (val == (old ^ LC_PARANOIA)));
-	return old == val;
-#endif
 }
 
 /**
-- 
2.38.1