[LU-18141] Free'ing macros already check NULL

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Tim Day
• Reporter: Tim Day

Description

The common free'ing macros already check for NULL, so we don't need to explicitly check this beforehand.

@@
expression E;
@@
- if (E != NULL)
(
  OBD_FREE_PTR(E);
|
  OBD_FREE(E, ...);
|
  LIBCFS_FREE(E, ...);
|
  CFS_FREE_PTR(E);
|
  CFS_FREE_PTR_ARRAY(E, ...);
) 

Issue Links

• is related to: LU-18151 Example Coccinelle scripts for contrib/
• is related to: LU-6142 Enforce Linux kernel coding style in all code
• is related to: LU-16890 allow OBD_FREE() to ignore NULL pointers