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authorDavid Sterba <dsterba@suse.cz>2011-06-14 12:52:17 +0200
committerDavid Sterba <dsterba@suse.cz>2011-10-24 14:48:00 +0200
commitdff51cd1c60856c28f5d22a571294c2b70b6b322 (patch)
treefe310f20368175086107460a247d5e6aa6d82e36 /fs/btrfs
parenta81d3b1ba2f5faae28ba7a092c7598673fa02ac2 (diff)
downloadlinux-dff51cd1c60856c28f5d22a571294c2b70b6b322.tar.bz2
btrfs: ratelimit WARN_ON in use_block_rsv
The WARN_ON under some circumstances heavily polute log and slow down the machine. This is just a safety, as the warning should be fixed by another patch, nevertheless, it still pops up during testing. Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/extent-tree.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index cef355f1328a..28c4809851a5 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"
@@ -5783,7 +5784,13 @@ 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(root, block_rsv, blocksize, 0);
if (!ret) {
return block_rsv;