WARNING: 'preceeding' may be misspelled - perhaps 'preceding'?
#10: 
If so, store the element reference in the preceeding operation.
                                          ^^^^^^^^^^

WARNING: line length of 103 exceeds 80 columns
#47: FILE: net/netfilter/nf_tables_api.c:28:
+#define NFT_MAX_SET_NELEMS ((2048 - sizeof(struct nft_trans_elem)) / sizeof(struct nft_trans_one_elem))

WARNING: line length of 111 exceeds 80 columns
#55: FILE: net/netfilter/nf_tables_api.c:395:
+static bool nft_trans_collapse_set_elem_allowed(const struct nft_trans_elem *a, const struct nft_trans_elem *b)

WARNING: line length of 90 exceeds 80 columns
#57: FILE: net/netfilter/nf_tables_api.c:397:
+	return a->set == b->set && a->bound == b->bound && a->nelems < NFT_MAX_SET_NELEMS;

WARNING: line length of 82 exceeds 80 columns
#111: FILE: net/netfilter/nf_tables_api.c:451:
+						   nft_trans_container_elem(tail),

WARNING: line length of 89 exceeds 80 columns
#112: FILE: net/netfilter/nf_tables_api.c:452:
+						   nft_trans_container_elem(trans), gfp);

total: 0 errors, 6 warnings, 0 checks, 113 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 850043058054 ("netfilter: nf_tables: switch trans_elem to real flex array") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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, 6 warnings, 0 checks, 113 lines checked