internal.h (d93618da6b6d453c6a9684a3460ffd51b9b4ef2e) internal.h (39bfcb8138f6dc3375f23b1e62ccfc7c0d83295d)
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2017-2018 HUAWEI, Inc.
4 * https://www.huawei.com/
5 * Copyright (C) 2021, Alibaba Cloud
6 */
7#ifndef __EROFS_INTERNAL_H
8#define __EROFS_INTERNAL_H

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70 unsigned char cache_strategy;
71 /* strategy of sync decompression (0 - auto, 1 - force on, 2 - force off) */
72 unsigned int sync_decompress;
73
74 /* threshold for decompression synchronously */
75 unsigned int max_sync_decompress_pages;
76#endif
77 unsigned int mount_opt;
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2017-2018 HUAWEI, Inc.
4 * https://www.huawei.com/
5 * Copyright (C) 2021, Alibaba Cloud
6 */
7#ifndef __EROFS_INTERNAL_H
8#define __EROFS_INTERNAL_H

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70 unsigned char cache_strategy;
71 /* strategy of sync decompression (0 - auto, 1 - force on, 2 - force off) */
72 unsigned int sync_decompress;
73
74 /* threshold for decompression synchronously */
75 unsigned int max_sync_decompress_pages;
76#endif
77 unsigned int mount_opt;
78 char *fsid;
79 char *domain_id;
80};
81
82struct erofs_dev_context {
83 struct idr tree;
84 struct rw_semaphore rwsem;
85
86 unsigned int extra_devices;
87};
88
89struct erofs_fs_context {
90 struct erofs_mount_opts opt;
91 struct erofs_dev_context *devs;
78};
79
80struct erofs_dev_context {
81 struct idr tree;
82 struct rw_semaphore rwsem;
83
84 unsigned int extra_devices;
85};
86
87struct erofs_fs_context {
88 struct erofs_mount_opts opt;
89 struct erofs_dev_context *devs;
90 char *fsid;
91 char *domain_id;
92};
93
94/* all filesystem-wide lz4 configurations */
95struct erofs_sb_lz4_info {
96 /* # of pages needed for EROFS lz4 rolling decompression */
97 u16 max_distance_pages;
98 /* maximum possible blocks for pclusters in the filesystem */
99 u16 max_pclusterblks;

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165 /* sysfs support */
166 struct kobject s_kobj; /* /sys/fs/erofs/<devname> */
167 struct completion s_kobj_unregister;
168
169 /* fscache support */
170 struct fscache_volume *volume;
171 struct erofs_fscache *s_fscache;
172 struct erofs_domain *domain;
92};
93
94/* all filesystem-wide lz4 configurations */
95struct erofs_sb_lz4_info {
96 /* # of pages needed for EROFS lz4 rolling decompression */
97 u16 max_distance_pages;
98 /* maximum possible blocks for pclusters in the filesystem */
99 u16 max_pclusterblks;

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165 /* sysfs support */
166 struct kobject s_kobj; /* /sys/fs/erofs/<devname> */
167 struct completion s_kobj_unregister;
168
169 /* fscache support */
170 struct fscache_volume *volume;
171 struct erofs_fscache *s_fscache;
172 struct erofs_domain *domain;
173 char *fsid;
174 char *domain_id;
173};
174
175#define EROFS_SB(sb) ((struct erofs_sb_info *)(sb)->s_fs_info)
176#define EROFS_I_SB(inode) ((struct erofs_sb_info *)(inode)->i_sb->s_fs_info)
177
178/* Mount flags set via mount options or defaults */
179#define EROFS_MOUNT_XATTR_USER 0x00000010
180#define EROFS_MOUNT_POSIX_ACL 0x00000020

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176
177#define EROFS_SB(sb) ((struct erofs_sb_info *)(sb)->s_fs_info)
178#define EROFS_I_SB(inode) ((struct erofs_sb_info *)(inode)->i_sb->s_fs_info)
179
180/* Mount flags set via mount options or defaults */
181#define EROFS_MOUNT_XATTR_USER 0x00000010
182#define EROFS_MOUNT_POSIX_ACL 0x00000020

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