From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: Re: [PATCH 2/2] btrfs: Make btrfs_direct_write atomic with respect to inode_lock
Date: Wed, 16 Dec 2020 09:06:27 +0800 [thread overview]
Message-ID: <202012160944.IVwRKt88-lkp@intel.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 19999 bytes --]
CC: kbuild-all(a)lists.01.org
In-Reply-To: <49ff9bfb8ef20e7a9c6e26fd54bc9f4508c9ccb4.1608053602.git.rgoldwyn@suse.com>
References: <49ff9bfb8ef20e7a9c6e26fd54bc9f4508c9ccb4.1608053602.git.rgoldwyn@suse.com>
TO: Goldwyn Rodrigues <rgoldwyn@suse.de>
TO: linux-fsdevel(a)vger.kernel.org
TO: linux-btrfs(a)vger.kernel.org
CC: darrick.wong(a)oracle.com
CC: hch(a)infradead.org
CC: nborisov(a)suse.com
CC: Goldwyn Rodrigues <rgoldwyn@suse.com>
Hi Goldwyn,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on kdave/for-next]
[also build test WARNING on next-20201215]
[cannot apply to xfs-linux/for-next v5.10]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Goldwyn-Rodrigues/Fix-locking-for-btrfs-direct-writes/20201216-021312
base: https://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-next
:::::: branch date: 7 hours ago
:::::: commit date: 7 hours ago
config: x86_64-randconfig-m001-20201215 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
smatch warnings:
fs/btrfs/file.c:1865 __btrfs_buffered_write() error: uninitialized symbol 'ret'.
vim +/ret +1865 fs/btrfs/file.c
b8d8e1fd570a194 Goldwyn Rodrigues 2020-09-24 1640
af84b6141d8301b Goldwyn Rodrigues 2020-12-15 1641 static noinline ssize_t __btrfs_buffered_write(struct kiocb *iocb,
e4af400a9c5081e Goldwyn Rodrigues 2018-06-17 1642 struct iov_iter *i)
39279cc3d2704cf Chris Mason 2007-06-12 1643 {
e4af400a9c5081e Goldwyn Rodrigues 2018-06-17 1644 struct file *file = iocb->ki_filp;
af84b6141d8301b Goldwyn Rodrigues 2020-12-15 1645 loff_t pos = iocb->ki_pos;
496ad9aa8ef4480 Al Viro 2013-01-23 1646 struct inode *inode = file_inode(file);
0b246afa62b0cf5 Jeff Mahoney 2016-06-22 1647 struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
11c65dccf70be9a Josef Bacik 2010-05-23 1648 struct page **pages = NULL;
364ecf3651e0862 Qu Wenruo 2017-02-27 1649 struct extent_changeset *data_reserved = NULL;
7ee9e4405f264e9 Josef Bacik 2013-06-21 1650 u64 release_bytes = 0;
376cc685cb3b43a Miao Xie 2013-12-10 1651 u64 lockstart;
376cc685cb3b43a Miao Xie 2013-12-10 1652 u64 lockend;
d0215f3e5ebb580 Josef Bacik 2011-01-25 1653 size_t num_written = 0;
d0215f3e5ebb580 Josef Bacik 2011-01-25 1654 int nrptrs;
c352370633400d1 Goldwyn Rodrigues 2020-09-24 1655 ssize_t ret;
7ee9e4405f264e9 Josef Bacik 2013-06-21 1656 bool only_release_metadata = false;
b6316429af7f365 Josef Bacik 2011-09-30 1657 bool force_page_uptodate = false;
5e8b9ef30392bb8 Goldwyn Rodrigues 2020-09-24 1658 loff_t old_isize = i_size_read(inode);
c352370633400d1 Goldwyn Rodrigues 2020-09-24 1659
af84b6141d8301b Goldwyn Rodrigues 2020-12-15 1660 lockdep_assert_held(&inode->i_rwsem);
c352370633400d1 Goldwyn Rodrigues 2020-09-24 1661
09cbfeaf1a5a67b Kirill A. Shutemov 2016-04-01 1662 nrptrs = min(DIV_ROUND_UP(iov_iter_count(i), PAGE_SIZE),
09cbfeaf1a5a67b Kirill A. Shutemov 2016-04-01 1663 PAGE_SIZE / (sizeof(struct page *)));
142349f541d0bb6 Wu Fengguang 2011-12-16 1664 nrptrs = min(nrptrs, current->nr_dirtied_pause - current->nr_dirtied);
142349f541d0bb6 Wu Fengguang 2011-12-16 1665 nrptrs = max(nrptrs, 8);
31e818fe7375d60 David Sterba 2015-02-20 1666 pages = kmalloc_array(nrptrs, sizeof(struct page *), GFP_KERNEL);
c352370633400d1 Goldwyn Rodrigues 2020-09-24 1667 if (!pages) {
c352370633400d1 Goldwyn Rodrigues 2020-09-24 1668 ret = -ENOMEM;
c352370633400d1 Goldwyn Rodrigues 2020-09-24 1669 goto out;
c352370633400d1 Goldwyn Rodrigues 2020-09-24 1670 }
ab93dbecfba72bb Chris Mason 2009-10-01 1671
d0215f3e5ebb580 Josef Bacik 2011-01-25 1672 while (iov_iter_count(i) > 0) {
c67d970f0ea8dcc Filipe Manana 2019-09-30 1673 struct extent_state *cached_state = NULL;
7073017aeb98db3 Johannes Thumshirn 2018-12-05 1674 size_t offset = offset_in_page(pos);
2e78c927d79333f Chandan Rajendra 2016-01-21 1675 size_t sector_offset;
d0215f3e5ebb580 Josef Bacik 2011-01-25 1676 size_t write_bytes = min(iov_iter_count(i),
09cbfeaf1a5a67b Kirill A. Shutemov 2016-04-01 1677 nrptrs * (size_t)PAGE_SIZE -
8c2383c3dd2cb5b Chris Mason 2007-06-18 1678 offset);
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1679 size_t num_pages;
7ee9e4405f264e9 Josef Bacik 2013-06-21 1680 size_t reserve_bytes;
d0215f3e5ebb580 Josef Bacik 2011-01-25 1681 size_t dirty_pages;
d0215f3e5ebb580 Josef Bacik 2011-01-25 1682 size_t copied;
2e78c927d79333f Chandan Rajendra 2016-01-21 1683 size_t dirty_sectors;
2e78c927d79333f Chandan Rajendra 2016-01-21 1684 size_t num_sectors;
79f015f216539df Goldwyn Rodrigues 2017-10-16 1685 int extents_locked;
39279cc3d2704cf Chris Mason 2007-06-12 1686
914ee295af418e9 Xin Zhong 2010-12-09 1687 /*
914ee295af418e9 Xin Zhong 2010-12-09 1688 * Fault pages before locking them in prepare_pages
914ee295af418e9 Xin Zhong 2010-12-09 1689 * to avoid recursive lock
914ee295af418e9 Xin Zhong 2010-12-09 1690 */
d0215f3e5ebb580 Josef Bacik 2011-01-25 1691 if (unlikely(iov_iter_fault_in_readable(i, write_bytes))) {
914ee295af418e9 Xin Zhong 2010-12-09 1692 ret = -EFAULT;
d0215f3e5ebb580 Josef Bacik 2011-01-25 1693 break;
914ee295af418e9 Xin Zhong 2010-12-09 1694 }
914ee295af418e9 Xin Zhong 2010-12-09 1695
a0e248bb502d516 Filipe Manana 2019-10-11 1696 only_release_metadata = false;
da17066c40472c2 Jeff Mahoney 2016-06-15 1697 sector_offset = pos & (fs_info->sectorsize - 1);
d9d8b2a51a404c2 Qu Wenruo 2015-09-08 1698
364ecf3651e0862 Qu Wenruo 2017-02-27 1699 extent_changeset_release(data_reserved);
36ea6f3e931391c Nikolay Borisov 2020-06-03 1700 ret = btrfs_check_data_free_space(BTRFS_I(inode),
36ea6f3e931391c Nikolay Borisov 2020-06-03 1701 &data_reserved, pos,
364ecf3651e0862 Qu Wenruo 2017-02-27 1702 write_bytes);
c6887cd11149d73 Josef Bacik 2016-03-25 1703 if (ret < 0) {
d9d8b2a51a404c2 Qu Wenruo 2015-09-08 1704 /*
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1705 * If we don't have to COW@the offset, reserve
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1706 * metadata only. write_bytes may get smaller than
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1707 * requested here.
d9d8b2a51a404c2 Qu Wenruo 2015-09-08 1708 */
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1709 if (btrfs_check_nocow_lock(BTRFS_I(inode), pos,
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1710 &write_bytes) > 0)
7ee9e4405f264e9 Josef Bacik 2013-06-21 1711 only_release_metadata = true;
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1712 else
d0215f3e5ebb580 Josef Bacik 2011-01-25 1713 break;
c6887cd11149d73 Josef Bacik 2016-03-25 1714 }
1832a6d5ee3b1af Chris Mason 2007-12-21 1715
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1716 num_pages = DIV_ROUND_UP(write_bytes + offset, PAGE_SIZE);
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1717 WARN_ON(num_pages > nrptrs);
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1718 reserve_bytes = round_up(write_bytes + sector_offset,
eefa45f59379282 Goldwyn Rodrigues 2020-09-25 1719 fs_info->sectorsize);
8b62f87bad9cf06 Josef Bacik 2017-10-19 1720 WARN_ON(reserve_bytes == 0);
9f3db423f98c5c6 Nikolay Borisov 2017-02-20 1721 ret = btrfs_delalloc_reserve_metadata(BTRFS_I(inode),
9f3db423f98c5c6 Nikolay Borisov 2017-02-20 1722 reserve_bytes);
7ee9e4405f264e9 Josef Bacik 2013-06-21 1723 if (ret) {
7ee9e4405f264e9 Josef Bacik 2013-06-21 1724 if (!only_release_metadata)
25ce28caaa1ddc2 Nikolay Borisov 2020-06-03 1725 btrfs_free_reserved_data_space(BTRFS_I(inode),
bc42bda22345efd Qu Wenruo 2017-02-27 1726 data_reserved, pos,
d9d8b2a51a404c2 Qu Wenruo 2015-09-08 1727 write_bytes);
8257b2dc3c1a105 Miao Xie 2014-03-06 1728 else
38d37aa9c329382 Qu Wenruo 2020-06-24 1729 btrfs_check_nocow_unlock(BTRFS_I(inode));
7ee9e4405f264e9 Josef Bacik 2013-06-21 1730 break;
7ee9e4405f264e9 Josef Bacik 2013-06-21 1731 }
7ee9e4405f264e9 Josef Bacik 2013-06-21 1732
7ee9e4405f264e9 Josef Bacik 2013-06-21 1733 release_bytes = reserve_bytes;
376cc685cb3b43a Miao Xie 2013-12-10 1734 again:
4a64001f0047956 Josef Bacik 2011-01-25 1735 /*
4a64001f0047956 Josef Bacik 2011-01-25 1736 * This is going to setup the pages array with the number of
4a64001f0047956 Josef Bacik 2011-01-25 1737 * pages we want, so we don't really need to worry about the
4a64001f0047956 Josef Bacik 2011-01-25 1738 * contents of pages from loop to loop
4a64001f0047956 Josef Bacik 2011-01-25 1739 */
b37392ea86761e9 Miao Xie 2013-12-10 1740 ret = prepare_pages(inode, pages, num_pages,
b37392ea86761e9 Miao Xie 2013-12-10 1741 pos, write_bytes,
b6316429af7f365 Josef Bacik 2011-09-30 1742 force_page_uptodate);
8b62f87bad9cf06 Josef Bacik 2017-10-19 1743 if (ret) {
8b62f87bad9cf06 Josef Bacik 2017-10-19 1744 btrfs_delalloc_release_extents(BTRFS_I(inode),
8702ba9396bf7bb Qu Wenruo 2019-10-14 1745 reserve_bytes);
d0215f3e5ebb580 Josef Bacik 2011-01-25 1746 break;
8b62f87bad9cf06 Josef Bacik 2017-10-19 1747 }
39279cc3d2704cf Chris Mason 2007-06-12 1748
79f015f216539df Goldwyn Rodrigues 2017-10-16 1749 extents_locked = lock_and_cleanup_extent_if_need(
79f015f216539df Goldwyn Rodrigues 2017-10-16 1750 BTRFS_I(inode), pages,
2cff578cfceba88 Nikolay Borisov 2017-02-20 1751 num_pages, pos, write_bytes, &lockstart,
2e78c927d79333f Chandan Rajendra 2016-01-21 1752 &lockend, &cached_state);
79f015f216539df Goldwyn Rodrigues 2017-10-16 1753 if (extents_locked < 0) {
79f015f216539df Goldwyn Rodrigues 2017-10-16 1754 if (extents_locked == -EAGAIN)
376cc685cb3b43a Miao Xie 2013-12-10 1755 goto again;
8b62f87bad9cf06 Josef Bacik 2017-10-19 1756 btrfs_delalloc_release_extents(BTRFS_I(inode),
8702ba9396bf7bb Qu Wenruo 2019-10-14 1757 reserve_bytes);
79f015f216539df Goldwyn Rodrigues 2017-10-16 1758 ret = extents_locked;
376cc685cb3b43a Miao Xie 2013-12-10 1759 break;
376cc685cb3b43a Miao Xie 2013-12-10 1760 }
376cc685cb3b43a Miao Xie 2013-12-10 1761
ee22f0c4ec428e7 Zhao Lei 2016-01-06 1762 copied = btrfs_copy_from_user(pos, write_bytes, pages, i);
b1bf862e9dad431 Chris Mason 2011-02-28 1763
0b246afa62b0cf5 Jeff Mahoney 2016-06-22 1764 num_sectors = BTRFS_BYTES_TO_BLKS(fs_info, reserve_bytes);
56244ef151c3cd1 Chris Mason 2016-05-16 1765 dirty_sectors = round_up(copied + sector_offset,
0b246afa62b0cf5 Jeff Mahoney 2016-06-22 1766 fs_info->sectorsize);
0b246afa62b0cf5 Jeff Mahoney 2016-06-22 1767 dirty_sectors = BTRFS_BYTES_TO_BLKS(fs_info, dirty_sectors);
56244ef151c3cd1 Chris Mason 2016-05-16 1768
b1bf862e9dad431 Chris Mason 2011-02-28 1769 /*
b1bf862e9dad431 Chris Mason 2011-02-28 1770 * if we have trouble faulting in the pages, fall
b1bf862e9dad431 Chris Mason 2011-02-28 1771 * back to one page at a time
b1bf862e9dad431 Chris Mason 2011-02-28 1772 */
b1bf862e9dad431 Chris Mason 2011-02-28 1773 if (copied < write_bytes)
b1bf862e9dad431 Chris Mason 2011-02-28 1774 nrptrs = 1;
b1bf862e9dad431 Chris Mason 2011-02-28 1775
b6316429af7f365 Josef Bacik 2011-09-30 1776 if (copied == 0) {
b6316429af7f365 Josef Bacik 2011-09-30 1777 force_page_uptodate = true;
56244ef151c3cd1 Chris Mason 2016-05-16 1778 dirty_sectors = 0;
b1bf862e9dad431 Chris Mason 2011-02-28 1779 dirty_pages = 0;
b6316429af7f365 Josef Bacik 2011-09-30 1780 } else {
b6316429af7f365 Josef Bacik 2011-09-30 1781 force_page_uptodate = false;
ed6078f70335f15 David Sterba 2014-06-05 1782 dirty_pages = DIV_ROUND_UP(copied + offset,
09cbfeaf1a5a67b Kirill A. Shutemov 2016-04-01 1783 PAGE_SIZE);
b6316429af7f365 Josef Bacik 2011-09-30 1784 }
914ee295af418e9 Xin Zhong 2010-12-09 1785
2e78c927d79333f Chandan Rajendra 2016-01-21 1786 if (num_sectors > dirty_sectors) {
8b8b08cbfb9021a Chris Mason 2016-07-19 1787 /* release everything except the sectors we dirtied */
265fdfa6ce0a79d David Sterba 2020-07-01 1788 release_bytes -= dirty_sectors << fs_info->sectorsize_bits;
485290a734f1427 Qu Wenruo 2015-10-29 1789 if (only_release_metadata) {
691fa059673b3b3 Nikolay Borisov 2017-02-20 1790 btrfs_delalloc_release_metadata(BTRFS_I(inode),
43b18595d6603cb Qu Wenruo 2017-12-12 1791 release_bytes, true);
485290a734f1427 Qu Wenruo 2015-10-29 1792 } else {
485290a734f1427 Qu Wenruo 2015-10-29 1793 u64 __pos;
485290a734f1427 Qu Wenruo 2015-10-29 1794
da17066c40472c2 Jeff Mahoney 2016-06-15 1795 __pos = round_down(pos,
0b246afa62b0cf5 Jeff Mahoney 2016-06-22 1796 fs_info->sectorsize) +
09cbfeaf1a5a67b Kirill A. Shutemov 2016-04-01 1797 (dirty_pages << PAGE_SHIFT);
86d52921a2ba51a Nikolay Borisov 2020-06-03 1798 btrfs_delalloc_release_space(BTRFS_I(inode),
bc42bda22345efd Qu Wenruo 2017-02-27 1799 data_reserved, __pos,
43b18595d6603cb Qu Wenruo 2017-12-12 1800 release_bytes, true);
914ee295af418e9 Xin Zhong 2010-12-09 1801 }
485290a734f1427 Qu Wenruo 2015-10-29 1802 }
914ee295af418e9 Xin Zhong 2010-12-09 1803
2e78c927d79333f Chandan Rajendra 2016-01-21 1804 release_bytes = round_up(copied + sector_offset,
0b246afa62b0cf5 Jeff Mahoney 2016-06-22 1805 fs_info->sectorsize);
376cc685cb3b43a Miao Xie 2013-12-10 1806
088545f6e442605 Nikolay Borisov 2020-06-03 1807 ret = btrfs_dirty_pages(BTRFS_I(inode), pages,
088545f6e442605 Nikolay Borisov 2020-06-03 1808 dirty_pages, pos, copied,
aa8c1a41a1e6108 Goldwyn Rodrigues 2020-10-14 1809 &cached_state, only_release_metadata);
c67d970f0ea8dcc Filipe Manana 2019-09-30 1810
c67d970f0ea8dcc Filipe Manana 2019-09-30 1811 /*
c67d970f0ea8dcc Filipe Manana 2019-09-30 1812 * If we have not locked the extent range, because the range's
c67d970f0ea8dcc Filipe Manana 2019-09-30 1813 * start offset is >= i_size, we might still have a non-NULL
c67d970f0ea8dcc Filipe Manana 2019-09-30 1814 * cached extent state, acquired while marking the extent range
c67d970f0ea8dcc Filipe Manana 2019-09-30 1815 * as delalloc through btrfs_dirty_pages(). Therefore free any
c67d970f0ea8dcc Filipe Manana 2019-09-30 1816 * possible cached extent state to avoid a memory leak.
c67d970f0ea8dcc Filipe Manana 2019-09-30 1817 */
79f015f216539df Goldwyn Rodrigues 2017-10-16 1818 if (extents_locked)
376cc685cb3b43a Miao Xie 2013-12-10 1819 unlock_extent_cached(&BTRFS_I(inode)->io_tree,
e43bbe5e16d87b4 David Sterba 2017-12-12 1820 lockstart, lockend, &cached_state);
c67d970f0ea8dcc Filipe Manana 2019-09-30 1821 else
c67d970f0ea8dcc Filipe Manana 2019-09-30 1822 free_extent_state(cached_state);
c67d970f0ea8dcc Filipe Manana 2019-09-30 1823
8702ba9396bf7bb Qu Wenruo 2019-10-14 1824 btrfs_delalloc_release_extents(BTRFS_I(inode), reserve_bytes);
f1de968376340c9 Miao Xie 2014-01-09 1825 if (ret) {
d0215f3e5ebb580 Josef Bacik 2011-01-25 1826 btrfs_drop_pages(pages, num_pages);
d0215f3e5ebb580 Josef Bacik 2011-01-25 1827 break;
f1de968376340c9 Miao Xie 2014-01-09 1828 }
39279cc3d2704cf Chris Mason 2007-06-12 1829
7ee9e4405f264e9 Josef Bacik 2013-06-21 1830 release_bytes = 0;
8257b2dc3c1a105 Miao Xie 2014-03-06 1831 if (only_release_metadata)
38d37aa9c329382 Qu Wenruo 2020-06-24 1832 btrfs_check_nocow_unlock(BTRFS_I(inode));
8257b2dc3c1a105 Miao Xie 2014-03-06 1833
f1de968376340c9 Miao Xie 2014-01-09 1834 btrfs_drop_pages(pages, num_pages);
f1de968376340c9 Miao Xie 2014-01-09 1835
d0215f3e5ebb580 Josef Bacik 2011-01-25 1836 cond_resched();
d0215f3e5ebb580 Josef Bacik 2011-01-25 1837
d0e1d66b5aa1ec9 Namjae Jeon 2012-12-11 1838 balance_dirty_pages_ratelimited(inode->i_mapping);
cb843a6f513a1a9 Chris Mason 2008-10-03 1839
914ee295af418e9 Xin Zhong 2010-12-09 1840 pos += copied;
914ee295af418e9 Xin Zhong 2010-12-09 1841 num_written += copied;
d0215f3e5ebb580 Josef Bacik 2011-01-25 1842 }
39279cc3d2704cf Chris Mason 2007-06-12 1843
d0215f3e5ebb580 Josef Bacik 2011-01-25 1844 kfree(pages);
d0215f3e5ebb580 Josef Bacik 2011-01-25 1845
7ee9e4405f264e9 Josef Bacik 2013-06-21 1846 if (release_bytes) {
8257b2dc3c1a105 Miao Xie 2014-03-06 1847 if (only_release_metadata) {
38d37aa9c329382 Qu Wenruo 2020-06-24 1848 btrfs_check_nocow_unlock(BTRFS_I(inode));
691fa059673b3b3 Nikolay Borisov 2017-02-20 1849 btrfs_delalloc_release_metadata(BTRFS_I(inode),
43b18595d6603cb Qu Wenruo 2017-12-12 1850 release_bytes, true);
8257b2dc3c1a105 Miao Xie 2014-03-06 1851 } else {
86d52921a2ba51a Nikolay Borisov 2020-06-03 1852 btrfs_delalloc_release_space(BTRFS_I(inode),
86d52921a2ba51a Nikolay Borisov 2020-06-03 1853 data_reserved,
0b246afa62b0cf5 Jeff Mahoney 2016-06-22 1854 round_down(pos, fs_info->sectorsize),
43b18595d6603cb Qu Wenruo 2017-12-12 1855 release_bytes, true);
7ee9e4405f264e9 Josef Bacik 2013-06-21 1856 }
8257b2dc3c1a105 Miao Xie 2014-03-06 1857 }
7ee9e4405f264e9 Josef Bacik 2013-06-21 1858
364ecf3651e0862 Qu Wenruo 2017-02-27 1859 extent_changeset_free(data_reserved);
5e8b9ef30392bb8 Goldwyn Rodrigues 2020-09-24 1860 if (num_written > 0) {
5e8b9ef30392bb8 Goldwyn Rodrigues 2020-09-24 1861 pagecache_isize_extended(inode, old_isize, iocb->ki_pos);
5e8b9ef30392bb8 Goldwyn Rodrigues 2020-09-24 1862 iocb->ki_pos += num_written;
5e8b9ef30392bb8 Goldwyn Rodrigues 2020-09-24 1863 }
c352370633400d1 Goldwyn Rodrigues 2020-09-24 1864 out:
d0215f3e5ebb580 Josef Bacik 2011-01-25 @1865 return num_written ? num_written : ret;
39279cc3d2704cf Chris Mason 2007-06-12 1866 }
d0215f3e5ebb580 Josef Bacik 2011-01-25 1867
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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next reply other threads:[~2020-12-16 1:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-16 1:06 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2020-12-15 18:06 [PATCH v2 0/2] Fix locking for btrfs direct writes Goldwyn Rodrigues
2020-12-15 18:06 ` [PATCH 2/2] btrfs: Make btrfs_direct_write atomic with respect to inode_lock Goldwyn Rodrigues
2020-12-15 22:13 ` Darrick J. Wong
2020-12-16 21:07 ` Goldwyn Rodrigues
2020-12-08 18:42 [PATCH 0/2] Fix direct write with respect to inode locking Goldwyn Rodrigues
2020-12-08 18:42 ` [PATCH 2/2] btrfs: Make btrfs_direct_write atomic with respect to inode_lock Goldwyn Rodrigues
2020-12-10 8:52 ` Nikolay Borisov
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