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| author | Wu Fengguang <fengguang.wu@intel.com> | 2012-01-17 11:18:56 -0600 |
|---|---|---|
| committer | Wu Fengguang <fengguang.wu@intel.com> | 2012-02-01 16:53:40 +0800 |
| commit | 15eb77a07c714ac80201abd0a9568888bcee6276 (patch) | |
| tree | cc43dc8458cb431900fd47990772ffa56b36b4f4 /include/trace | |
| parent | 2673b4cf5d59c3ee5e0c12f6d734d38770324dc4 (diff) | |
| download | linux-15eb77a07c714ac80201abd0a9568888bcee6276.tar.gz linux-15eb77a07c714ac80201abd0a9568888bcee6276.tar.bz2 linux-15eb77a07c714ac80201abd0a9568888bcee6276.zip | |
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.h | 2 |
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; |