From: kbuild test robot <fengguang.wu@intel.com>
To: Josef Bacik <jbacik@fb.com>
Cc: kbuild-all@01.org, linux-btrfs@vger.kernel.org
Subject: [josef-btrfs:master 9/11] fs/btrfs/extent_io.c:4707:61: warning: overflow in implicit constant conversion
Date: Fri, 21 Oct 2016 05:04:30 +0800 [thread overview]
Message-ID: <201610210526.PNbISwsH%fengguang.wu@intel.com> (raw)
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next.git master
head: 570b2b152bf32db746eb6de1a144491b5f7ca34f
commit: 2d700e7883ba3aad07fa80214b66ed142cbc5ecc [9/11] Btrfs: kill the btree_inode
config: x86_64-randconfig-x015-201642 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
git checkout 2d700e7883ba3aad07fa80214b66ed142cbc5ecc
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
fs/btrfs/extent_io.c: In function 'btrfs_release_extent_buffer_page':
>> fs/btrfs/extent_io.c:4707:61: warning: overflow in implicit constant conversion [-Woverflow]
mod_node_page_state(page_pgdat(page), NR_METADATA_BYTES, -PAGE_SIZE);
^
vim +4707 fs/btrfs/extent_io.c
4691 index = num_extent_pages(eb->start, eb->len);
4692 if (index == 0)
4693 return;
4694
4695 ASSERT(!test_bit(EXTENT_BUFFER_DIRTY, &eb->bflags));
4696 do {
4697 index--;
4698 page = eb->pages[index];
4699 if (!page)
4700 continue;
4701 ASSERT(PagePrivate(page));
4702 ASSERT(page->private == (unsigned long)eb);
4703 ClearPagePrivate(page);
4704 set_page_private(page, 0);
4705
4706 if (!test_bit(EXTENT_BUFFER_DUMMY, &eb->bflags))
> 4707 mod_node_page_state(page_pgdat(page), NR_METADATA_BYTES, -PAGE_SIZE);
4708 if (current->reclaim_state)
4709 current->reclaim_state->reclaimed_slab++;
4710
4711 /* Once for the page private. */
4712 put_page(page);
4713
4714 /* Once for the alloc_page. */
4715 put_page(page);
---
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https://lists.01.org/pipermail/kbuild-all Intel Corporation
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reply other threads:[~2016-10-20 21:05 UTC|newest]
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