mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-28 20:37:27 +00:00
bce8d11207
Previously, init_inode_metadata does not hold any parent directory's inode
page. So, f2fs_init_acl can grab its parent inode page without any problem.
But, when we use inline_dentry, that page is grabbed during f2fs_add_link,
so that we can fall into deadlock condition like below.
INFO: task mknod:11006 blocked for more than 120 seconds.
Tainted: G OE 3.17.0-rc1+ #13
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
mknod D ffff88003fc94580 0 11006 11004 0x00000000
ffff880007717b10 0000000000000002 ffff88003c323220 ffff880007717fd8
0000000000014580 0000000000014580 ffff88003daecb30 ffff88003c323220
ffff88003fc94e80 ffff88003ffbb4e8 ffff880007717ba0 0000000000000002
Call Trace:
[<ffffffff8173dc40>] ? bit_wait+0x50/0x50
[<ffffffff8173d4cd>] io_schedule+0x9d/0x130
[<ffffffff8173dc6c>] bit_wait_io+0x2c/0x50
[<ffffffff8173da3b>] __wait_on_bit_lock+0x4b/0xb0
[<ffffffff811640a7>] __lock_page+0x67/0x70
[<ffffffff810acf50>] ? autoremove_wake_function+0x40/0x40
[<ffffffff811652cc>] pagecache_get_page+0x14c/0x1e0
[<ffffffffa029afa9>] get_node_page+0x59/0x130 [f2fs]
[<ffffffffa02a63ad>] read_all_xattrs+0x24d/0x430 [f2fs]
[<ffffffffa02a6ca2>] f2fs_getxattr+0x52/0xe0 [f2fs]
[<ffffffffa02a7481>] f2fs_get_acl+0x41/0x2d0 [f2fs]
[<ffffffff8122d847>] get_acl+0x47/0x70
[<ffffffff8122db5a>] posix_acl_create+0x5a/0x150
[<ffffffffa02a7759>] f2fs_init_acl+0x29/0xcb [f2fs]
[<ffffffffa0286a8d>] init_inode_metadata+0x5d/0x340 [f2fs]
[<ffffffffa029253a>] f2fs_add_inline_entry+0x12a/0x2e0 [f2fs]
[<ffffffffa0286ea5>] __f2fs_add_link+0x45/0x4a0 [f2fs]
[<ffffffffa028b5b6>] ? f2fs_new_inode+0x146/0x220 [f2fs]
[<ffffffffa028b816>] f2fs_mknod+0x86/0xf0 [f2fs]
[<ffffffff811e3ec1>] vfs_mknod+0xe1/0x160
[<ffffffff811e4b26>] SyS_mknod+0x1f6/0x200
[<ffffffff81741d7f>] tracesys+0xe1/0xe6
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/*
|
|
* fs/f2fs/acl.h
|
|
*
|
|
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com/
|
|
*
|
|
* Portions of this code from linux/fs/ext2/acl.h
|
|
*
|
|
* Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#ifndef __F2FS_ACL_H__
|
|
#define __F2FS_ACL_H__
|
|
|
|
#include <linux/posix_acl_xattr.h>
|
|
|
|
#define F2FS_ACL_VERSION 0x0001
|
|
|
|
struct f2fs_acl_entry {
|
|
__le16 e_tag;
|
|
__le16 e_perm;
|
|
__le32 e_id;
|
|
};
|
|
|
|
struct f2fs_acl_entry_short {
|
|
__le16 e_tag;
|
|
__le16 e_perm;
|
|
};
|
|
|
|
struct f2fs_acl_header {
|
|
__le32 a_version;
|
|
};
|
|
|
|
#ifdef CONFIG_F2FS_FS_POSIX_ACL
|
|
|
|
extern struct posix_acl *f2fs_get_acl(struct inode *, int);
|
|
extern int f2fs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
|
|
extern int f2fs_init_acl(struct inode *, struct inode *, struct page *,
|
|
struct page *);
|
|
#else
|
|
#define f2fs_check_acl NULL
|
|
#define f2fs_get_acl NULL
|
|
#define f2fs_set_acl NULL
|
|
|
|
static inline int f2fs_init_acl(struct inode *inode, struct inode *dir,
|
|
struct page *ipage, struct page *dpage)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
#endif /* __F2FS_ACL_H__ */
|