From: Chris Mason <chris.mason@oracle.com>
Date: Mon, 10 Nov 2008 17:34:40 +0000 (-0500)
Subject: Btrfs: Turn off extent state leak debugging
X-Git-Tag: firefly_0821_release~15789^2~11^2~55^2~26
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b47eda8690a10f4fc01eb7b795078fa3fa57149f;p=firefly-linux-kernel-4.4.55.git

Btrfs: Turn off extent state leak debugging

The extent_io.c code has a #define to find and cleanup extent state leaks
on module unmount.  This adds a very highly contended spinlock to a
hot path for most FS operations.

Turn it off by default.  A later changeset will add a .config option
for it.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index af2d9a9300a7..5cc0082379ce 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -30,7 +30,7 @@ static struct kmem_cache *extent_buffer_cache;
 static LIST_HEAD(buffers);
 static LIST_HEAD(states);
 
-#define LEAK_DEBUG 1
+#define LEAK_DEBUG 0
 #ifdef LEAK_DEBUG
 static spinlock_t leak_lock = SPIN_LOCK_UNLOCKED;
 #endif