tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2
3#include "messages.h"
4#include "ctree.h"
5#include "fs.h"
6#include "accessors.h"
7
8void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag,
9 const char *name)
10{
11 struct btrfs_super_block *disk_super;
12 u64 features;
13
14 disk_super = fs_info->super_copy;
15 features = btrfs_super_incompat_flags(disk_super);
16 if (!(features & flag)) {
17 spin_lock(&fs_info->super_lock);
18 features = btrfs_super_incompat_flags(disk_super);
19 if (!(features & flag)) {
20 features |= flag;
21 btrfs_set_super_incompat_flags(disk_super, features);
22 btrfs_info(fs_info,
23 "setting incompat feature flag for %s (0x%llx)",
24 name, flag);
25 }
26 spin_unlock(&fs_info->super_lock);
27 }
28}
29
30void __btrfs_clear_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag,
31 const char *name)
32{
33 struct btrfs_super_block *disk_super;
34 u64 features;
35
36 disk_super = fs_info->super_copy;
37 features = btrfs_super_incompat_flags(disk_super);
38 if (features & flag) {
39 spin_lock(&fs_info->super_lock);
40 features = btrfs_super_incompat_flags(disk_super);
41 if (features & flag) {
42 features &= ~flag;
43 btrfs_set_super_incompat_flags(disk_super, features);
44 btrfs_info(fs_info,
45 "clearing incompat feature flag for %s (0x%llx)",
46 name, flag);
47 }
48 spin_unlock(&fs_info->super_lock);
49 }
50}
51
52void __btrfs_set_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag,
53 const char *name)
54{
55 struct btrfs_super_block *disk_super;
56 u64 features;
57
58 disk_super = fs_info->super_copy;
59 features = btrfs_super_compat_ro_flags(disk_super);
60 if (!(features & flag)) {
61 spin_lock(&fs_info->super_lock);
62 features = btrfs_super_compat_ro_flags(disk_super);
63 if (!(features & flag)) {
64 features |= flag;
65 btrfs_set_super_compat_ro_flags(disk_super, features);
66 btrfs_info(fs_info,
67 "setting compat-ro feature flag for %s (0x%llx)",
68 name, flag);
69 }
70 spin_unlock(&fs_info->super_lock);
71 }
72}
73
74void __btrfs_clear_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag,
75 const char *name)
76{
77 struct btrfs_super_block *disk_super;
78 u64 features;
79
80 disk_super = fs_info->super_copy;
81 features = btrfs_super_compat_ro_flags(disk_super);
82 if (features & flag) {
83 spin_lock(&fs_info->super_lock);
84 features = btrfs_super_compat_ro_flags(disk_super);
85 if (features & flag) {
86 features &= ~flag;
87 btrfs_set_super_compat_ro_flags(disk_super, features);
88 btrfs_info(fs_info,
89 "clearing compat-ro feature flag for %s (0x%llx)",
90 name, flag);
91 }
92 spin_unlock(&fs_info->super_lock);
93 }
94}