From: David Sterba <dsterba@suse.cz>
To: linux-btrfs@vger.kernel.org
Cc: David Sterba <dsterba@suse.cz>
Subject: [PATCH debug] btrfs: ratelimit WARN_ON in use_block_rsv
Date: Mon, 29 Aug 2011 20:42:32 +0200 [thread overview]
Message-ID: <1314643352-10195-1-git-send-email-dsterba@suse.cz> (raw)
In-Reply-To: <4E52109A.3090403@itwm.fraunhofer.de>
A debugging helper, not really intended for merge.
From: David Sterba <dsterba@suse.cz>
Signed-off-by: David Sterba <dsterba@suse.cz>
---
fs/btrfs/extent-tree.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 44a3107..c5c1e7d 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -23,6 +23,7 @@
#include <linux/rcupdate.h>
#include <linux/kthread.h>
#include <linux/slab.h>
+#include <linux/ratelimit.h>
#include "compat.h"
#include "hash.h"
#include "ctree.h"
@@ -5703,7 +5704,13 @@ use_block_rsv(struct btrfs_trans_handle *trans,
if (!ret)
return block_rsv;
if (ret) {
- WARN_ON(1);
+ static DEFINE_RATELIMIT_STATE(_rs,
+ DEFAULT_RATELIMIT_INTERVAL,
+ /*DEFAULT_RATELIMIT_BURST*/ 2);
+ if (__ratelimit(&_rs)) {
+ printk(KERN_DEBUG "btrfs: block rsv returned %d\n", ret);
+ WARN_ON(1);
+ }
ret = reserve_metadata_bytes(trans, root, block_rsv, blocksize,
0);
if (!ret) {
--
1.7.6
prev parent reply other threads:[~2011-08-29 18:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-19 16:45 bonnie triggers and endless numbers of stack traces Bernd Schubert
2011-08-19 17:28 ` Bernd Schubert
2011-08-19 19:36 ` Josef Bacik
2011-08-19 23:45 ` David Sterba
2011-08-22 8:17 ` Bernd Schubert
2011-08-29 18:42 ` David Sterba [this message]
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