Acked-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> for the series. Jens, feel free to take this in your tree. -- Steve On Mon, 18 Sep 2017 14:53:49 -0400 Waiman Long <longman@xxxxxxxxxx> wrote: > v6: > - Add a second patch to rename the bd_fsfreeze_mutex to > bd_fsfreeze_blktrace_mutex. > > v5: > - Overload the bd_fsfreeze_mutex in block_device structure for > blktrace protection. > > v4: > - Use blktrace_mutex in blk_trace_ioctl() as well. > > v3: > - Use a global blktrace_mutex to serialize sysfs attribute accesses > instead of the bd_mutex. > > v2: > - Use READ_ONCE() and smp_store_mb() to read and write bd_deleting. > - Check for signal in the mutex_trylock loops. > - Use usleep() instead of schedule() for RT tasks. > > This patchset fixes a potential blktrace deadlock problem between > block device deletion and sysfs operations. > > Waiman Long (2): > blktrace: Fix potentail deadlock between delete & sysfs ops > block_dev: Rename bd_fsfreeze_mutex > > fs/block_dev.c | 14 +++++++------- > fs/gfs2/ops_fstype.c | 6 +++--- > fs/nilfs2/super.c | 6 +++--- > fs/super.c | 6 +++--- > include/linux/fs.h | 5 +++-- > kernel/trace/blktrace.c | 26 ++++++++++++++++++++------ > 6 files changed, 39 insertions(+), 24 deletions(-) >
