dax/bus.c: replace WARN_ON_ONCE() with lockdep asserts

Patch series "dax/bus.c: Fixups for dax-bus locking", v3.

Commit Fixes: c05ae9d85b47 ("dax/bus.c: replace driver-core lock usage by
a local rwsem") introduced a few problems that this series aims to fix. 
Add back device_lock() where it was correctly used (during device
manipulation operations), remove conditional locking in
unregister_dax_dev() and unregister_dax_mapping(), use non-interruptible
versions of rwsem locks when not called from a user process, and fix up a
write vs.  read usage of an rwsem.


This patch (of 4):

In [1], Dan points out that all of the WARN_ON_ONCE() usage in the
referenced patch should be replaced with lockdep_assert_held, or
lockdep_held_assert_write().  Replace these as appropriate.

Link: https://lkml.kernel.org/r/[email protected]
Link: https://lore.kernel.org/r/65f0b5ef41817_aa222941a@dwillia2-mobl3.amr.corp.intel.com.notmuch [1]
Link: https://lkml.kernel.org/r/[email protected]
Fixes: c05ae9d85b47 ("dax/bus.c: replace driver-core lock usage by a local rwsem")
Signed-off-by: Vishal Verma <[email protected]>
Reported-by: Dan Williams <[email protected]>
Reviewed-by: Dan Williams <[email protected]>
Cc: Alison Schofield <[email protected]>
Cc: Dave Jiang <[email protected]>
Cc: Vishal Verma <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions