Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md

Pull MD update from Shaohua Li:

 - fixed deadlock in MD suspend and a potential bug in bio allocation
   (Neil Brown)

 - fixed signal issue (Mikulas Patocka)

 - fixed typo in FailFast test (Guoqing Jiang)

 - other trival fixes

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
  MD: fix sleep in atomic
  MD: fix a null dereference
  md: use a separate bio_set for synchronous IO.
  md: change the initialization value for a spare device spot to MD_DISK_ROLE_SPARE
  md/raid1: remove unused bio in sync_request_write
  md/raid10: fix FailFast test for wrong device
  md: don't use flush_signals in userspace processes
  md: fix deadlock between mddev_suspend() and md_write_start()

diff --cc drivers/md/md.c
index 31bcbfb,66f6b92..8cdca02
--- 1/drivers/md/md.c
--- 2/drivers/md/md.c
+++ b/drivers/md/md.c
@@@ -5432,6 -5449,11 +5449,11 @@@ int md_run(struct mddev *mddev
                if (!mddev->bio_set)
                        return -ENOMEM;
        }
 -              mddev->sync_set = bioset_create(BIO_POOL_SIZE, 0);
+       if (mddev->sync_set == NULL) {
++              mddev->sync_set = bioset_create(BIO_POOL_SIZE, 0, BIOSET_NEED_BVECS);
+               if (!mddev->sync_set)
+                       return -ENOMEM;
+       }
  
        spin_lock(&pers_lock);
        pers = find_pers(mddev->level, mddev->clevel);

diff --cc drivers/md/multipath.c
Simple merge

diff --cc drivers/md/raid1.c
Simple merge

diff --cc drivers/md/raid10.c
Simple merge

diff --cc drivers/md/raid5.c
Simple merge