6:05 a.m.
tree:
https://github.com/0day-ci/linux/commits/UPDATE-20200716-153005/Nikolay-B...
head: a4695ab8c9d28c2c826e742853afa972b713f620
commit: a4695ab8c9d28c2c826e742853afa972b713f620 [5/5] btrfs: Switch seed device to list
api
config: arm-randconfig-r016-20200717 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
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
git checkout a4695ab8c9d28c2c826e742853afa972b713f620
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
In file included from fs/btrfs/delayed-inode.h:17,
from fs/btrfs/super.c:30:
fs/btrfs/ctree.h:2271:8: warning: type qualifiers ignored on function return type
[-Wignored-qualifiers]
2271 | size_t __const btrfs_get_num_csums(void);
| ^~~~~~~
In file included from fs/btrfs/super.c:46:
fs/btrfs/sysfs.h:16:1: warning: type qualifiers ignored on function return type
[-Wignored-qualifiers]
16 | const char * const btrfs_feature_set_name(enum btrfs_feature_set set);
| ^~~~~
fs/btrfs/super.c: In function 'btrfs_show_devname':
> fs/btrfs/super.c:2404:28: error: 'struct
btrfs_fs_devices' has no member named 'seed'
2404 | cur_devices =
cur_devices->seed;
| ^~
vim +2404 fs/btrfs/super.c
9e7cc91a6d18a4 Wang Xiaoguang 2016-08-01 2377
9c5085c147989d Josef Bacik 2012-06-05 2378 static int btrfs_show_devname(struct
seq_file *m, struct dentry *root)
9c5085c147989d Josef Bacik 2012-06-05 2379 {
9c5085c147989d Josef Bacik 2012-06-05 2380 struct btrfs_fs_info *fs_info =
btrfs_sb(root->d_sb);
9c5085c147989d Josef Bacik 2012-06-05 2381 struct btrfs_fs_devices *cur_devices;
9c5085c147989d Josef Bacik 2012-06-05 2382 struct btrfs_device *dev, *first_dev =
NULL;
9c5085c147989d Josef Bacik 2012-06-05 2383 struct list_head *head;
9c5085c147989d Josef Bacik 2012-06-05 2384
88c14590cdd6f3 David Sterba 2018-03-16 2385 /*
88c14590cdd6f3 David Sterba 2018-03-16 2386 * Lightweight locking of the devices.
We should not need
88c14590cdd6f3 David Sterba 2018-03-16 2387 * device_list_mutex here as we only
read the device data and the list
88c14590cdd6f3 David Sterba 2018-03-16 2388 * is protected by RCU. Even if a
device is deleted during the list
88c14590cdd6f3 David Sterba 2018-03-16 2389 * traversals, we'll get valid data,
the freeing callback will wait at
52042d8e82ff50 Andrea Gelmini 2018-11-28 2390 * least until the rcu_read_unlock.
88c14590cdd6f3 David Sterba 2018-03-16 2391 */
88c14590cdd6f3 David Sterba 2018-03-16 2392 rcu_read_lock();
9c5085c147989d Josef Bacik 2012-06-05 2393 cur_devices = fs_info->fs_devices;
9c5085c147989d Josef Bacik 2012-06-05 2394 while (cur_devices) {
9c5085c147989d Josef Bacik 2012-06-05 2395 head = &cur_devices->devices;
88c14590cdd6f3 David Sterba 2018-03-16 2396 list_for_each_entry_rcu(dev, head,
dev_list) {
e6e674bd4d54fe Anand Jain 2017-12-04 2397 if (test_bit(BTRFS_DEV_STATE_MISSING,
&dev->dev_state))
aa9ddcd4b55571 Josef Bacik 2012-08-02 2398 continue;
0aeb8a6e67cdde Anand Jain 2014-06-30 2399 if (!dev->name)
0aeb8a6e67cdde Anand Jain 2014-06-30 2400 continue;
9c5085c147989d Josef Bacik 2012-06-05 2401 if (!first_dev || dev->devid <
first_dev->devid)
9c5085c147989d Josef Bacik 2012-06-05 2402 first_dev = dev;
9c5085c147989d Josef Bacik 2012-06-05 2403 }
9c5085c147989d Josef Bacik 2012-06-05 @2404 cur_devices = cur_devices->seed;
9c5085c147989d Josef Bacik 2012-06-05 2405 }
9c5085c147989d Josef Bacik 2012-06-05 2406
672d599041c862 Misono Tomohiro 2018-08-02 2407 if (first_dev)
672d599041c862 Misono Tomohiro 2018-08-02 2408 seq_escape(m,
rcu_str_deref(first_dev->name), " \t\n\\");
672d599041c862 Misono Tomohiro 2018-08-02 2409 else
9c5085c147989d Josef Bacik 2012-06-05 2410 WARN_ON(1);
88c14590cdd6f3 David Sterba 2018-03-16 2411 rcu_read_unlock();
9c5085c147989d Josef Bacik 2012-06-05 2412 return 0;
9c5085c147989d Josef Bacik 2012-06-05 2413 }
9c5085c147989d Josef Bacik 2012-06-05 2414
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0-DAY CI Kernel Test Service, Intel Corporation
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