WARNING: line length of 81 exceeds 80 columns
#27: FILE: kernel/bpf/arena.c:47:
+static void arena_free_pages(struct bpf_arena *arena, long uaddr, long page_cnt);

WARNING: line length of 92 exceeds 80 columns
#50: FILE: kernel/bpf/arena.c:525:
+	/* Cap allocation size to KMALLOC_MAX_CACHE_SIZE so kmalloc_nolock() can succeed. */

WARNING: line length of 84 exceeds 80 columns
#51: FILE: kernel/bpf/arena.c:526:
+	alloc_pages = min(page_cnt, KMALLOC_MAX_CACHE_SIZE / sizeof(struct page *));

WARNING: line length of 85 exceeds 80 columns
#52: FILE: kernel/bpf/arena.c:527:
+	pages = kmalloc_nolock(alloc_pages * sizeof(struct page *), 0, NUMA_NO_NODE);

WARNING: line length of 96 exceeds 80 columns
#100: FILE: kernel/bpf/arena.c:553:
+		/* zeroing is needed, since alloc_pages_bulk() only fills in non-zero entries */

WARNING: line length of 83 exceeds 80 columns
#103: FILE: kernel/bpf/arena.c:556:
+		ret = bpf_map_alloc_pages(&arena->map, node_id, this_batch, pages);

WARNING: line length of 83 exceeds 80 columns
#108: FILE: kernel/bpf/arena.c:561:
+		 * Earlier checks made sure that uaddr32 + page_cnt * PAGE_SIZE - 1

WARNING: line length of 82 exceeds 80 columns
#112: FILE: kernel/bpf/arena.c:565:
+		 * kern_vm_start + uaddr32 + page_cnt * PAGE_SIZE - 1 can overflow

WARNING: line length of 91 exceeds 80 columns
#117: FILE: kernel/bpf/arena.c:570:
+					  kern_vm_start + uaddr32 + (mapped << PAGE_SHIFT),

WARNING: line length of 95 exceeds 80 columns
#118: FILE: kernel/bpf/arena.c:571:
+					  this_batch << PAGE_SHIFT, apply_range_set_cb, &data);

WARNING: line length of 91 exceeds 80 columns
#120: FILE: kernel/bpf/arena.c:573:
+			/* data.i pages were mapped, account them and free the remaining */

total: 0 errors, 11 warnings, 0 checks, 126 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 c9f811f1520b ("bpf: arena: use kmalloc_nolock() in place of kvcalloc()") 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, 11 warnings, 0 checks, 126 lines checked