[mingo-tip:sched/headers 1426/2340] fs/xfs/xfs_aops.c:185:3: error: implicit declaration of function 'cond_resched'
From: kernel test robot
Date: Wed Feb 23 2022 - 18:02:56 EST
tree: git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers
head: 97c5eeb4de3ad324ed2a4656b46465299cfd010a
commit: 696f8f602b998e5e83e2f71d3dd79e06dbb4e4ea [1426/2340] headers/deps: block/ioprio: Remove the <linux/sched.h> dependency from <linux/ioprio.h>
config: i386-randconfig-a011 (https://download.01.org/0day-ci/archive/20220224/202202240635.yBLA03nm-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e)
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://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=696f8f602b998e5e83e2f71d3dd79e06dbb4e4ea
git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
git fetch --no-tags mingo-tip sched/headers
git checkout 696f8f602b998e5e83e2f71d3dd79e06dbb4e4ea
# 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=i386 SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Note: the mingo-tip/sched/headers HEAD 97c5eeb4de3ad324ed2a4656b46465299cfd010a builds fine.
It only hurts bisectability.
All errors (new ones prefixed by >>):
>> fs/xfs/xfs_aops.c:185:3: error: implicit declaration of function 'cond_resched' [-Werror,-Wimplicit-function-declaration]
cond_resched();
^
fs/xfs/xfs_aops.c:185:3: note: did you mean '__cond_resched'?
include/linux/kernel.h:95:12: note: '__cond_resched' declared here
extern int __cond_resched(void);
^
1 error generated.
--
>> fs/btrfs/ioctl.c:1655:3: error: implicit declaration of function 'cond_resched' [-Werror,-Wimplicit-function-declaration]
cond_resched();
^
fs/btrfs/ioctl.c:1655:3: note: did you mean '__cond_resched'?
include/linux/kernel.h:95:12: note: '__cond_resched' declared here
extern int __cond_resched(void);
^
1 error generated.
vim +/cond_resched +185 fs/xfs/xfs_aops.c
3994fc48957520 Darrick J. Wong 2019-04-15 150
ebb7fb1557b1d0 Dave Chinner 2022-01-26 151 /*
ebb7fb1557b1d0 Dave Chinner 2022-01-26 152 * Finish all pending IO completions that require transactional modifications.
ebb7fb1557b1d0 Dave Chinner 2022-01-26 153 *
ebb7fb1557b1d0 Dave Chinner 2022-01-26 154 * We try to merge physical and logically contiguous ioends before completion to
ebb7fb1557b1d0 Dave Chinner 2022-01-26 155 * minimise the number of transactions we need to perform during IO completion.
ebb7fb1557b1d0 Dave Chinner 2022-01-26 156 * Both unwritten extent conversion and COW remapping need to iterate and modify
ebb7fb1557b1d0 Dave Chinner 2022-01-26 157 * one physical extent at a time, so we gain nothing by merging physically
ebb7fb1557b1d0 Dave Chinner 2022-01-26 158 * discontiguous extents here.
ebb7fb1557b1d0 Dave Chinner 2022-01-26 159 *
ebb7fb1557b1d0 Dave Chinner 2022-01-26 160 * The ioend chain length that we can be processing here is largely unbound in
ebb7fb1557b1d0 Dave Chinner 2022-01-26 161 * length and we may have to perform significant amounts of work on each ioend
ebb7fb1557b1d0 Dave Chinner 2022-01-26 162 * to complete it. Hence we have to be careful about holding the CPU for too
ebb7fb1557b1d0 Dave Chinner 2022-01-26 163 * long in this loop.
ebb7fb1557b1d0 Dave Chinner 2022-01-26 164 */
cb357bf3d105f6 Darrick J. Wong 2019-04-15 165 void
cb357bf3d105f6 Darrick J. Wong 2019-04-15 166 xfs_end_io(
cb357bf3d105f6 Darrick J. Wong 2019-04-15 167 struct work_struct *work)
cb357bf3d105f6 Darrick J. Wong 2019-04-15 168 {
433dad94ec5d6b Christoph Hellwig 2019-10-17 169 struct xfs_inode *ip =
433dad94ec5d6b Christoph Hellwig 2019-10-17 170 container_of(work, struct xfs_inode, i_ioend_work);
598ecfbaa742ac Christoph Hellwig 2019-10-17 171 struct iomap_ioend *ioend;
433dad94ec5d6b Christoph Hellwig 2019-10-17 172 struct list_head tmp;
cb357bf3d105f6 Darrick J. Wong 2019-04-15 173 unsigned long flags;
cb357bf3d105f6 Darrick J. Wong 2019-04-15 174
cb357bf3d105f6 Darrick J. Wong 2019-04-15 175 spin_lock_irqsave(&ip->i_ioend_lock, flags);
433dad94ec5d6b Christoph Hellwig 2019-10-17 176 list_replace_init(&ip->i_ioend_list, &tmp);
cb357bf3d105f6 Darrick J. Wong 2019-04-15 177 spin_unlock_irqrestore(&ip->i_ioend_lock, flags);
cb357bf3d105f6 Darrick J. Wong 2019-04-15 178
598ecfbaa742ac Christoph Hellwig 2019-10-17 179 iomap_sort_ioends(&tmp);
598ecfbaa742ac Christoph Hellwig 2019-10-17 180 while ((ioend = list_first_entry_or_null(&tmp, struct iomap_ioend,
433dad94ec5d6b Christoph Hellwig 2019-10-17 181 io_list))) {
cb357bf3d105f6 Darrick J. Wong 2019-04-15 182 list_del_init(&ioend->io_list);
6e552494fb90ac Brian Foster 2021-05-04 183 iomap_ioend_try_merge(ioend, &tmp);
cb357bf3d105f6 Darrick J. Wong 2019-04-15 184 xfs_end_ioend(ioend);
ebb7fb1557b1d0 Dave Chinner 2022-01-26 @185 cond_resched();
cb357bf3d105f6 Darrick J. Wong 2019-04-15 186 }
cb357bf3d105f6 Darrick J. Wong 2019-04-15 187 }
cb357bf3d105f6 Darrick J. Wong 2019-04-15 188
:::::: The code at line 185 was first introduced by commit
:::::: ebb7fb1557b1d03b906b668aa2164b51e6b7d19a xfs, iomap: limit individual ioend chain lengths in writeback
:::::: TO: Dave Chinner <dchinner@xxxxxxxxxx>
:::::: CC: Darrick J. Wong <djwong@xxxxxxxxxx>
---
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https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx