CHECK: Lines should not end with a '('
#50: FILE: include/linux/rhashtable.h:621:
+static __always_inline struct rhash_head *__rhashtable_lookup_one(

CHECK: Lines should not end with a '('
#77: FILE: include/linux/rhashtable.h:655:
+static __always_inline struct rhash_head *__rhashtable_lookup(

WARNING: memory barrier without comment
#134: FILE: lib/rhashtable.c:726:
+		smp_rmb();

WARNING: line length of 84 exceeds 80 columns
#245: FILE: lib/test_rhashtable.c:753:
+		/* Should still return some element (iteration from bucket start) */

WARNING: line length of 87 exceeds 80 columns
#250: FILE: lib/test_rhashtable.c:758:
+	/* Test 3: verify walk_enter_from + walk_next can iterate remaining elements */

total: 0 errors, 3 warnings, 2 checks, 256 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit d186cacfb696 ("rhashtable: Add rhashtable_walk_enter_from()") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 3 warnings, 2 checks, 256 lines checked