diff options
| 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 /fs/fs-writeback.c | |
| parent | 2673b4cf5d59c3ee5e0c12f6d734d38770324dc4 (diff) | |
| download | lwn-15eb77a07c714ac80201abd0a9568888bcee6276.tar.gz lwn-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 'fs/fs-writeback.c')
| -rw-r--r-- | fs/fs-writeback.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index f855916657ba..5b4a9362d5aa 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -53,14 +53,6 @@ struct wb_writeback_work { }; /* - * Include the creation of the trace points after defining the - * wb_writeback_work structure so that the definition remains local to this - * file. - */ -#define CREATE_TRACE_POINTS -#include <trace/events/writeback.h> - -/* * We don't actually have pdflush, but this one is exported though /proc... */ int nr_pdflush_threads; @@ -92,6 +84,14 @@ static inline struct inode *wb_inode(struct list_head *head) return list_entry(head, struct inode, i_wb_list); } +/* + * Include the creation of the trace points after defining the + * wb_writeback_work structure and inline functions so that the definition + * remains local to this file. + */ +#define CREATE_TRACE_POINTS +#include <trace/events/writeback.h> + /* Wakeup flusher thread or forker thread to fork it. Requires bdi->wb_lock. */ static void bdi_wakeup_flusher(struct backing_dev_info *bdi) { |