| commit | 70d9798b95562abac005d4ba71d28820f9a201eb | [log] [tgz] |
|---|---|---|
| author | Shaohua Li <shli@fb.com> | Wed Feb 24 17:41:01 2016 -0800 |
| committer | Shaohua Li <shli@fb.com> | Fri Feb 26 09:44:57 2016 -0800 |
| tree | 4ab92bc060a79faa8363f29462cea00cbbddcf36 | |
| parent | 399146b80ed6fb9f1ebe5a07234f00dff446d2b4 [diff] |
MD: warn for potential deadlock The personality thread shouldn't call mddev_suspend(). Because mddev_suspend() will for all IO finish, but IO is handled in personality thread, so this could cause deadlock. To trigger this early, add a warning if mddev_suspend() is called from personality thread. Suggested-by: NeilBrown <neilb@suse.com> Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>