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Message-ID: <202202150844.OSL410Oz-lkp@intel.com>
Date: Tue, 15 Feb 2022 08:29:03 +0800
From: kernel test robot <lkp@...el.com>
To: David Howells <dhowells@...hat.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
linux-kernel@...r.kernel.org
Subject: [ammarfaizi2-block:dhowells/linux-fs/netfs-maple 28/39]
fs/netfs/write_helper.c:665:32: error: no member named 'cache' in 'struct
netfs_i_context'
tree: https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/netfs-maple
head: b995bc7182f60aa2b4d8930a7446f10dfbcebcc2
commit: f923e34430afd434b984d1d604f3ec3898f63ad8 [28/39] netfs: Implement buffered writes through netfs_file_write_iter()
config: hexagon-randconfig-r034-20220214 (https://download.01.org/0day-ci/archive/20220215/202202150844.OSL410Oz-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project ea071884b0cc7210b3cc5fe858f0e892a779a23b)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/ammarfaizi2/linux-block/commit/f923e34430afd434b984d1d604f3ec3898f63ad8
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/netfs-maple
git checkout f923e34430afd434b984d1d604f3ec3898f63ad8
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash fs/netfs/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All error/warnings (new ones prefixed by >>):
>> fs/netfs/write_helper.c:28:26: warning: comparison of distinct pointer types ('typeof ((1UL << 18) - offset) *' (aka 'unsigned long *') and 'typeof (size) *' (aka 'unsigned int *')) [-Wcompare-distinct-pointer-types]
unsigned int psize = min(PAGE_SIZE - offset, size);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:45:19: note: expanded from macro 'min'
#define min(x, y) __careful_cmp(x, y, <)
^~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp'
__builtin_choose_expr(__safe_cmp(x, y), \
^~~~~~~~~~~~~~~~
include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp'
(__typecheck(x, y) && __no_side_effects(x, y))
^~~~~~~~~~~~~~~~~
include/linux/minmax.h:20:28: note: expanded from macro '__typecheck'
(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
fs/netfs/write_helper.c:125:18: warning: comparison of distinct pointer types ('typeof (target->from) *' (aka 'unsigned long long *') and 'typeof (folio_pos(folio) + offset) *' (aka 'long long *')) [-Wcompare-distinct-pointer-types]
target->from = min(target->from, folio_pos(folio) + offset);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:45:19: note: expanded from macro 'min'
#define min(x, y) __careful_cmp(x, y, <)
^~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp'
__builtin_choose_expr(__safe_cmp(x, y), \
^~~~~~~~~~~~~~~~
include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp'
(__typecheck(x, y) && __no_side_effects(x, y))
^~~~~~~~~~~~~~~~~
include/linux/minmax.h:20:28: note: expanded from macro '__typecheck'
(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
fs/netfs/write_helper.c:126:18: warning: comparison of distinct pointer types ('typeof (target->to) *' (aka 'unsigned long long *') and 'typeof (folio_pos(folio) + offset + len) *' (aka 'long long *')) [-Wcompare-distinct-pointer-types]
target->to = max(target->to, folio_pos(folio) + offset + len);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:52:19: note: expanded from macro 'max'
#define max(x, y) __careful_cmp(x, y, >)
^~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp'
__builtin_choose_expr(__safe_cmp(x, y), \
^~~~~~~~~~~~~~~~
include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp'
(__typecheck(x, y) && __no_side_effects(x, y))
^~~~~~~~~~~~~~~~~
include/linux/minmax.h:20:28: note: expanded from macro '__typecheck'
(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
>> fs/netfs/write_helper.c:665:32: error: no member named 'cache' in 'struct netfs_i_context'
fscache_update_cookie(ctx->cache, NULL, &pos);
~~~ ^
3 warnings and 1 error generated.
vim +665 fs/netfs/write_helper.c
507
508 /*
509 * Write data into a prereserved region of the pagecache attached to a netfs
510 * inode.
511 */
512 static ssize_t netfs_perform_write(struct kiocb *iocb, struct iov_iter *iter,
513 enum netfs_write_type write_type)
514 {
515 struct netfs_dirty_region *spare_region = NULL;
516 struct file *file = iocb->ki_filp;
517 struct netfs_i_context *ctx = netfs_i_context(file_inode(file));
518 struct folio *folio;
519 enum netfs_handle_nonuptodate nupt;
520 ssize_t written = 0, ret;
521 loff_t i_size, pos = iocb->ki_pos;
522 bool always_fill = false;
523 bool locked = false;
524
525 MA_STATE(mas, &ctx->dirty_regions, pos / PAGE_SIZE,
526 (pos + iov_iter_count(iter) - 1) / PAGE_SIZE);
527
528 ret = ctx->ops->validate_for_write(file_inode(file), file);
529 if (ret < 0)
530 return ret;
531
532 do {
533 size_t plen;
534 size_t offset; /* Offset into pagecache folio */
535 size_t bytes; /* Bytes to write to folio */
536 size_t copied; /* Bytes copied from user */
537
538 folio = netfs_grab_folio_for_write(file->f_mapping,
539 pos / PAGE_SIZE,
540 iov_iter_count(iter));
541 if (!folio) {
542 ret = -ENOMEM;
543 goto out;
544 }
545
546 plen = folio_size(folio);
547 offset = pos - folio_file_pos(folio);
548 bytes = min_t(size_t, plen - offset, iov_iter_count(iter));
549 locked = true;
550
551 if (!folio_test_uptodate(folio)) {
552 folio_unlock(folio); /* Avoid deadlocking fault-in */
553 locked = false;
554 }
555
556 /* Bring in the user page that we will copy from _first_.
557 * Otherwise there's a nasty deadlock on copying from the same
558 * page as we're writing to, without it being marked
559 * up-to-date.
560 *
561 * Not only is this an optimisation, but it is also required to
562 * check that the address is actually valid, when atomic
563 * usercopies are used, below.
564 */
565 if (unlikely(fault_in_iov_iter_readable(iter, bytes))) {
566 ret = -EFAULT;
567 goto error_folio;
568 }
569
570 if (fatal_signal_pending(current)) {
571 ret = -EINTR;
572 goto error_folio;
573 }
574
575 if (!locked) {
576 ret = folio_lock_killable(folio);
577 if (ret < 0)
578 goto error_folio;
579 }
580
581 redo_prefetch:
582 /* See if we need to prefetch the area we're going to modify.
583 * We need to do this before we get a lock on the folio in case
584 * there's more than one writer competing for the same cache
585 * block.
586 */
587 nupt = netfs_handle_nonuptodate_folio(ctx, file, folio,
588 offset, bytes, always_fill);
589 _debug("nupt %u", nupt);
590 switch (nupt) {
591 case NETFS_JUST_PREFETCH:
592 ret = netfs_prefetch_for_write(file, folio, bytes);
593 if (ret < 0) {
594 _debug("prefetch = %zd", ret);
595 goto error_folio;
596 }
597 nupt = NETFS_FOLIO_IS_UPTODATE;
598 fallthrough;
599 case NETFS_FOLIO_IS_UPTODATE:
600 break;
601 case NETFS_MODIFY_AND_CLEAR:
602 zero_user_segment(&folio->page, 0, offset);
603 break;
604 case NETFS_WHOLE_FOLIO_MODIFY:
605 break;
606 }
607
608 /* Preallocate the space we need in the dirty region list. */
609 ret = mas_expected_entries(&mas, 1);
610 if (ret < 0)
611 goto error_folio;
612
613 if (!spare_region) {
614 spare_region = netfs_alloc_dirty_region();
615 if (IS_ERR(spare_region)) {
616 ret = PTR_ERR(spare_region);
617 spare_region = NULL;
618 goto error_folio;
619 }
620 }
621
622 if (mapping_writably_mapped(folio_file_mapping(folio)))
623 flush_dcache_folio(folio);
624 copied = copy_folio_from_iter_atomic(folio, offset, bytes, iter);
625 flush_dcache_folio(folio);
626
627 /* Deal with a (partially) failed copy */
628 if (!folio_test_uptodate(folio)) {
629 if (copied == 0) {
630 ret = -EFAULT;
631 goto error_folio;
632 }
633 if (copied < bytes) {
634 iov_iter_revert(iter, copied);
635 always_fill = true;
636 goto redo_prefetch;
637 }
638 switch (nupt) {
639 case NETFS_JUST_PREFETCH:
640 case NETFS_FOLIO_IS_UPTODATE:
641 /* We have the folio locked, so it really ought
642 * to be uptodate.
643 */
644 WARN(true, "Locked folio %lx became non-uptodate\n",
645 folio_index(folio));
646 ret = -EIO;
647 goto error_folio;
648 case NETFS_MODIFY_AND_CLEAR:
649 zero_user_segment(&folio->page, offset + copied, plen);
650 fallthrough;
651 case NETFS_WHOLE_FOLIO_MODIFY:
652 folio_mark_uptodate(folio);
653 break;
654 }
655 }
656
657 /* Update the inode size if we moved the EOF marker */
658 pos += copied;
659 i_size = i_size_read(file_inode(file));
660 if (pos > i_size) {
661 if (ctx->ops->update_i_size) {
662 ctx->ops->update_i_size(file, pos);
663 } else {
664 i_size_write(file_inode(file), pos);
> 665 fscache_update_cookie(ctx->cache, NULL, &pos);
666 }
667 }
668
669 netfs_commit_folio(ctx, file, &spare_region, &mas,
670 folio, offset, copied, write_type);
671
672 folio_mark_dirty(folio);
673 folio_unlock(folio);
674 folio_put(folio);
675 folio = NULL;
676
677 cond_resched();
678
679 written += copied;
680
681 balance_dirty_pages_ratelimited(file->f_mapping);
682 } while (iov_iter_count(iter));
683
684 out:
685 if (likely(written)) {
686 if (write_type == NETFS_ORDINARY_WRITE)
687 netfs_commit_region(ctx, &mas, iocb->ki_pos, written);
688
689 iocb->ki_pos += written;
690
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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