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authorWu Fengguang <fengguang.wu@intel.com>2012-01-17 11:18:56 -0600
committerWu Fengguang <fengguang.wu@intel.com>2012-02-01 16:53:40 +0800
commit15eb77a07c714ac80201abd0a9568888bcee6276 (patch)
treecc43dc8458cb431900fd47990772ffa56b36b4f4 /include/trace
parent2673b4cf5d59c3ee5e0c12f6d734d38770324dc4 (diff)
downloadlinux-linaro-stable-15eb77a07c714ac80201abd0a9568888bcee6276.tar.gz
writeback: fix NULL bdi->dev in trace writeback_single_inode
bdi_prune_sb() resets sb->s_bdi to default_backing_dev_info when the tearing down the original bdi. Fix trace_writeback_single_inode to use sb->s_bdi=default_backing_dev_info rather than bdi->dev=NULL for a teared down bdi. Cc: <stable@kernel.org> Reported-by: Rabin Vincent <rabin@rab.in> Tested-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/writeback.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h
index 8588a8918023..06d302ebcb72 100644
--- a/include/trace/events/writeback.h
+++ b/include/trace/events/writeback.h
@@ -426,7 +426,7 @@ DECLARE_EVENT_CLASS(writeback_single_inode_template,
TP_fast_assign(
strncpy(__entry->name,
- dev_name(inode->i_mapping->backing_dev_info->dev), 32);
+ dev_name(inode_to_bdi(inode)->dev), 32);
__entry->ino = inode->i_ino;
__entry->state = inode->i_state;
__entry->dirtied_when = inode->dirtied_when;