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Date: Thu, 11 Aug 2022 11:02:53 +0800
From: Kassey Li <quic_yingangl@...cinc.com>
To: kernel test robot <lkp@...el.com>, <akpm@...ux-foundation.org>,
<vbabka@...nel.org>
CC: <kbuild-all@...ts.01.org>, <minchan@...nel.org>, <vbabka@...e.cz>,
<iamjoonsoo.kim@....com>, <linux-kernel@...r.kernel.org>,
<linux-mm@...ck.org>
Subject: Re: [PATCH v6] mm/page_owner.c: add llseek for page_owner
hi, Vlastimil:
On 8/10/2022 5:02 PM, kernel test robot wrote:
> Hi Kassey,
>
> Thank you for the patch! Yet something to improve:
>
> [auto build test ERROR on v5.19]
> [also build test ERROR on next-20220810]
> [cannot apply to akpm-mm/mm-everything linus/master]
> [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#_base_tree_information]
>
> url: https://github.com/intel-lab-lkp/linux/commits/Kassey-Li/mm-page_owner-c-add-llseek-for-page_owner/20220810-093417
> base: 3d7cb6b04c3f3115719235cc6866b10326de34cd
> config: parisc-buildonly-randconfig-r004-20220810 (https://download.01.org/0day-ci/archive/20220810/202208101628.o6qUzx50-lkp@intel.com/config)
> compiler: hppa-linux-gcc (GCC) 12.1.0
> 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
> # https://github.com/intel-lab-lkp/linux/commit/d2decd69a8d5756c1706092c805a4c8af14df471
> git remote add linux-review https://github.com/intel-lab-lkp/linux
> git fetch --no-tags linux-review Kassey-Li/mm-page_owner-c-add-llseek-for-page_owner/20220810-093417
> git checkout d2decd69a8d5756c1706092c805a4c8af14df471
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag where applicable
> Reported-by: kernel test robot <lkp@...el.com>
>
> All errors (new ones prefixed by >>):
>
> In file included from mm/page_owner.c:16:
>>> mm/../fs/proc/internal.h:51:9: error: unknown type name 'proc_write_t'
> 51 | proc_write_t write;
> | ^~~~~~~~~~~~
# CONFIG_PROC_FS is not set in some arch, so we can not directly include
the header file.
+#include "../fs/proc/internal.h"
how about add an extern ? or do you have other suggest ?
>
>
> vim +/proc_write_t +51 mm/../fs/proc/internal.h
>
> ^1da177e4c3f41 Linus Torvalds 2005-04-16 19
> 59d8053f1e1690 David Howells 2013-04-11 20 /*
> 59d8053f1e1690 David Howells 2013-04-11 21 * This is not completely implemented yet. The idea is to
> 59d8053f1e1690 David Howells 2013-04-11 22 * create an in-memory tree (like the actual /proc filesystem
> 59d8053f1e1690 David Howells 2013-04-11 23 * tree) of these proc_dir_entries, so that we can dynamically
> 59d8053f1e1690 David Howells 2013-04-11 24 * add new files to /proc.
> 59d8053f1e1690 David Howells 2013-04-11 25 *
> 710585d4922fd3 Nicolas Dichtel 2014-12-10 26 * parent/subdir are used for the directory structure (every /proc file has a
> 710585d4922fd3 Nicolas Dichtel 2014-12-10 27 * parent, but "subdir" is empty for all non-directory entries).
> 710585d4922fd3 Nicolas Dichtel 2014-12-10 28 * subdir_node is used to build the rb tree "subdir" of the parent.
> 59d8053f1e1690 David Howells 2013-04-11 29 */
> 59d8053f1e1690 David Howells 2013-04-11 30 struct proc_dir_entry {
> 163cf548db8887 Alexey Dobriyan 2018-02-06 31 /*
> 163cf548db8887 Alexey Dobriyan 2018-02-06 32 * number of callers into module in progress;
> 163cf548db8887 Alexey Dobriyan 2018-02-06 33 * negative -> it's going away RSN
> 163cf548db8887 Alexey Dobriyan 2018-02-06 34 */
> 163cf548db8887 Alexey Dobriyan 2018-02-06 35 atomic_t in_use;
> 9cdd83e3100651 Alexey Dobriyan 2018-04-10 36 refcount_t refcnt;
> 163cf548db8887 Alexey Dobriyan 2018-02-06 37 struct list_head pde_openers; /* who did ->open, but not ->release */
> 53f63345d893df Alexey Dobriyan 2018-02-06 38 /* protects ->pde_openers and all struct pde_opener instances */
> 53f63345d893df Alexey Dobriyan 2018-02-06 39 spinlock_t pde_unload_lock;
> 163cf548db8887 Alexey Dobriyan 2018-02-06 40 struct completion *pde_unload_completion;
> 163cf548db8887 Alexey Dobriyan 2018-02-06 41 const struct inode_operations *proc_iops;
> d56c0d45f0e27f Alexey Dobriyan 2020-02-03 42 union {
> d56c0d45f0e27f Alexey Dobriyan 2020-02-03 43 const struct proc_ops *proc_ops;
> d56c0d45f0e27f Alexey Dobriyan 2020-02-03 44 const struct file_operations *proc_dir_ops;
> d56c0d45f0e27f Alexey Dobriyan 2020-02-03 45 };
> 1fde6f21d90f8b Alexey Dobriyan 2019-02-01 46 const struct dentry_operations *proc_dops;
> 3f3942aca6da35 Christoph Hellwig 2018-05-15 47 union {
> fddda2b7b52118 Christoph Hellwig 2018-04-13 48 const struct seq_operations *seq_ops;
> 3f3942aca6da35 Christoph Hellwig 2018-05-15 49 int (*single_show)(struct seq_file *, void *);
> 3f3942aca6da35 Christoph Hellwig 2018-05-15 50 };
> 564def71765caf David Howells 2018-05-18 @51 proc_write_t write;
> 163cf548db8887 Alexey Dobriyan 2018-02-06 52 void *data;
> 44414d82cfe0f6 Christoph Hellwig 2018-04-24 53 unsigned int state_size;
> 59d8053f1e1690 David Howells 2013-04-11 54 unsigned int low_ino;
> 59d8053f1e1690 David Howells 2013-04-11 55 nlink_t nlink;
> 59d8053f1e1690 David Howells 2013-04-11 56 kuid_t uid;
> 59d8053f1e1690 David Howells 2013-04-11 57 kgid_t gid;
> 59d8053f1e1690 David Howells 2013-04-11 58 loff_t size;
> 710585d4922fd3 Nicolas Dichtel 2014-12-10 59 struct proc_dir_entry *parent;
> 4f1134370a29a5 Alexey Dobriyan 2018-04-10 60 struct rb_root subdir;
> 710585d4922fd3 Nicolas Dichtel 2014-12-10 61 struct rb_node subdir_node;
> b4884f23331ae3 Alexey Dobriyan 2018-04-10 62 char *name;
> 163cf548db8887 Alexey Dobriyan 2018-02-06 63 umode_t mode;
> d919b33dafb3e2 Alexey Dobriyan 2020-04-06 64 u8 flags;
> 59d8053f1e1690 David Howells 2013-04-11 65 u8 namelen;
> 24074a35c5c975 David Howells 2018-06-13 66 char inline_name[];
> 3859a271a003ab Kees Cook 2016-10-28 67 } __randomize_layout;
> ^1da177e4c3f41 Linus Torvalds 2005-04-16 68
>
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