[PATCH v3 0/7] Use guard() instead of rwsem locking

[Li Ming]

Use scoped resource management to replace open-coded locking operation
is recommended. CXL subsystem still remains some down_read()/up_read()
and down_write()/up_write() which can be replaced by guard() simply.

This patchset includes simply using guard() instead of some
down_read()/up_read() and down_write()/up_write() cases. Besides, it
also includes some function code cleanup after using guard().

base-commit: d5d2106e2118c4e09fef131d9889f79559b95bfc cxl/next

v3:
- Drop the renaming of __construct_region() to construct_auto_region(). (Dan)
- Rebase to the top of cxl/next. (Dave)
v2:
- Drop some local variables. (Jonathan)
- Rename __construct_region() to construct_auto_region(). (Jonathan and Dave)

Li Ming (7):
  cxl/core: Use guard() to replace open-coded down_read/write()
  cxl/core: cxl_mem_sanitize() cleanup
  cxl/memdev: cxl_memdev_ioctl() cleanup
  cxl/core: Use guard() to drop the goto pattern of cxl_dpa_free()
  cxl/core: Use guard() to drop goto pattern of cxl_dpa_alloc()
  cxl/region: Drop goto pattern in cxl_dax_region_alloc()
  cxl/region: Drop goto pattern of construct_region()

 drivers/cxl/core/hdm.c    |  69 ++++++++++---------------
 drivers/cxl/core/mbox.c   |  10 ++--
 drivers/cxl/core/memdev.c |  17 +++---
 drivers/cxl/core/port.c   |   8 +--
 drivers/cxl/core/region.c | 105 +++++++++++++++++++-------------------
 5 files changed, 91 insertions(+), 118 deletions(-)

-- 
2.34.1