tree: https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git libnvdimm-for-next head: c2638e7534a1bfca30284b46a29bda820dc16b97 commit: f9c63b454621fc2a0d73b387c8bf6122c4e84d39 [49/56] mm, dev_pagemap: introduce CONFIG_DEV_PAGEMAP_OPS config: x86_64-randconfig-r0-04022007 (attached as .config) compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026 reproduce: git checkout f9c63b454621fc2a0d73b387c8bf6122c4e84d39 # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): fs/ext4/super.o: In function `ext4_put_super': fs/ext4/super.o: In function `fs_dax_claim_bdev': fs/ext4/super.o: In function `ext4_fill_super': fs/ext4/super.c:4411: undefined reference to `fs_dax_release' fs/xfs/xfs_super.o: In function `fs_dax_claim_bdev': fs/xfs/xfs_super.o: In function `xfs_open_devices': fs/xfs/xfs_super.c:820: undefined reference to `fs_dax_release' fs/xfs/xfs_super.c:823: undefined reference to `fs_dax_release' fs/xfs/xfs_super.o: In function `xfs_close_devices': fs/xfs/xfs_super.c:727: undefined reference to `fs_dax_release' fs/xfs/xfs_super.c:735: undefined reference to `fs_dax_release' fs/xfs/xfs_super.o:fs/xfs/xfs_super.c:738: more undefined references to `fs_dax_release' follow vim +955 fs/ext4/super.c ac27a0ec1 Dave Kleikamp 2006-10-11 913 ac27a0ec1 Dave Kleikamp 2006-10-11 914 /* Debugging code just in case the in-memory inode orphan list ac27a0ec1 Dave Kleikamp 2006-10-11 915 * isn't empty. The on-disk one can be non-empty if we've ac27a0ec1 Dave Kleikamp 2006-10-11 916 * detected an error and taken the fs readonly, but the ac27a0ec1 Dave Kleikamp 2006-10-11 917 * in-memory list had better be clean by this point. */ ac27a0ec1 Dave Kleikamp 2006-10-11 918 if (!list_empty(&sbi->s_orphan)) ac27a0ec1 Dave Kleikamp 2006-10-11 919 dump_orphan_list(sb, sbi); ac27a0ec1 Dave Kleikamp 2006-10-11 920 J_ASSERT(list_empty(&sbi->s_orphan)); ac27a0ec1 Dave Kleikamp 2006-10-11 921 89d96a6f8 Theodore Ts'o 2015-06-20 922 sync_blockdev(sb->s_bdev); f98393a64 Peter Zijlstra 2007-05-06 923 invalidate_bdev(sb->s_bdev); ac27a0ec1 Dave Kleikamp 2006-10-11 924 if (sbi->journal_bdev && sbi->journal_bdev != sb->s_bdev) { ac27a0ec1 Dave Kleikamp 2006-10-11 925 /* ac27a0ec1 Dave Kleikamp 2006-10-11 926 * Invalidate the journal device's buffers. We don't want them ac27a0ec1 Dave Kleikamp 2006-10-11 927 * floating about in memory - the physical journal device may ac27a0ec1 Dave Kleikamp 2006-10-11 928 * hotswapped, and it breaks the `ro-after' testing code. ac27a0ec1 Dave Kleikamp 2006-10-11 929 */ ac27a0ec1 Dave Kleikamp 2006-10-11 930 sync_blockdev(sbi->journal_bdev); f98393a64 Peter Zijlstra 2007-05-06 931 invalidate_bdev(sbi->journal_bdev); 617ba13b3 Mingming Cao 2006-10-11 932 ext4_blkdev_remove(sbi); ac27a0ec1 Dave Kleikamp 2006-10-11 933 } dec214d00 Tahsin Erdogan 2017-06-22 934 if (sbi->s_ea_inode_cache) { dec214d00 Tahsin Erdogan 2017-06-22 935 ext4_xattr_destroy_cache(sbi->s_ea_inode_cache); dec214d00 Tahsin Erdogan 2017-06-22 936 sbi->s_ea_inode_cache = NULL; dec214d00 Tahsin Erdogan 2017-06-22 937 } 47387409e Tahsin Erdogan 2017-06-22 938 if (sbi->s_ea_block_cache) { 47387409e Tahsin Erdogan 2017-06-22 939 ext4_xattr_destroy_cache(sbi->s_ea_block_cache); 47387409e Tahsin Erdogan 2017-06-22 940 sbi->s_ea_block_cache = NULL; 9c191f701 T Makphaibulchoke 2014-03-18 941 } c5e06d101 Johann Lombardi 2011-05-24 942 if (sbi->s_mmp_tsk) c5e06d101 Johann Lombardi 2011-05-24 943 kthread_stop(sbi->s_mmp_tsk); 9060dd2c5 Eric Sandeen 2016-11-26 944 brelse(sbi->s_sbh); ac27a0ec1 Dave Kleikamp 2006-10-11 945 sb->s_fs_info = NULL; 3197ebdb1 Theodore Ts'o 2009-03-31 946 /* 3197ebdb1 Theodore Ts'o 2009-03-31 947 * Now that we are completely done shutting down the 3197ebdb1 Theodore Ts'o 2009-03-31 948 * superblock, we need to actually destroy the kobject. 3197ebdb1 Theodore Ts'o 2009-03-31 949 */ 3197ebdb1 Theodore Ts'o 2009-03-31 950 kobject_put(&sbi->s_kobj); 3197ebdb1 Theodore Ts'o 2009-03-31 951 wait_for_completion(&sbi->s_kobj_unregister); 0441984a3 Darrick J. Wong 2012-04-29 952 if (sbi->s_chksum_driver) 0441984a3 Darrick J. Wong 2012-04-29 953 crypto_free_shash(sbi->s_chksum_driver); 705895b61 Pekka Enberg 2009-02-15 954 kfree(sbi->s_blockgroup_lock); e213635ee Dan Williams 2017-10-21 @955 fs_dax_release(sbi->s_daxdev, sb); ac27a0ec1 Dave Kleikamp 2006-10-11 956 kfree(sbi); ac27a0ec1 Dave Kleikamp 2006-10-11 957 } ac27a0ec1 Dave Kleikamp 2006-10-11 958 :::::: The code at line 955 was first introduced by commit :::::: e213635ee4633126c4482ead3c79231d124f4b03 mm, dax: enable filesystems to trigger dev_pagemap ->page_free callbacks :::::: TO: Dan Williams <dan.j.williams(a)intel.com&gt; :::::: CC: Dan Williams <dan.j.williams(a)intel.com&gt; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation