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Fix for kernel 6.7+ 

* Use shrinker pointer instead of shrink struct for 6.7+, due to the `shrinker_alloc` function always return the pointer.
* Most of the codes are stolen from drivers/android/binder_alloc.c
This commit is contained in:
ssfdust 2024-01-06 10:20:56 +08:00 committed by Christian Hoff
parent 084d19950a
commit 13a93a4f7c
3 changed files with 54 additions and 6 deletions
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25
ashmem/ashmem.c
View File

@ -494,6 +494,9 @@ ashmem_shrink_count(struct shrinker *shrink, struct shrink_control *sc)
return lru_count;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
static struct shrinker *ashmem_shrinker;
#else
static struct shrinker ashmem_shrinker = {
.count_objects = ashmem_shrink_count,
.scan_objects = ashmem_shrink_scan,
@ -503,6 +506,7 @@ static struct shrinker ashmem_shrinker = {
*/
.seeks = DEFAULT_SEEKS * 4,
};
#endif
static int set_prot_mask(struct ashmem_area *asma, unsigned long prot)
{
@ -807,8 +811,13 @@ static long ashmem_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
.gfp_mask = GFP_KERNEL,
.nr_to_scan = LONG_MAX,
};
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
ret = ashmem_shrink_count(ashmem_shrinker, &sc);
ashmem_shrink_scan(ashmem_shrinker, &sc);
#else
ret = ashmem_shrink_count(&ashmem_shrinker, &sc);
ashmem_shrink_scan(&ashmem_shrinker, &sc);
#endif
}
break;
}
@ -878,7 +887,17 @@ static int __init ashmem_init(void)
return ret;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,0,0))
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
ashmem_shrinker = shrinker_alloc(0, "android-ashmem");
if (ashmem_shrinker) {
ashmem_shrinker->count_objects = ashmem_shrink_count;
ashmem_shrinker->scan_objects = ashmem_shrink_scan;
ashmem_shrinker->seeks = DEFAULT_SEEKS * 4;
shrinker_register(ashmem_shrinker);
} else {
return -ENOMEM;
}
#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(6,0,0))
register_shrinker(&ashmem_shrinker, "android-ashmem");
#else
register_shrinker(&ashmem_shrinker);
@ -889,7 +908,11 @@ static int __init ashmem_init(void)
static void __exit ashmem_exit(void)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
shrinker_free(ashmem_shrinker);
#else
unregister_shrinker(&ashmem_shrinker);
#endif
misc_deregister(&ashmem_misc);

19
binder/binder_alloc.c
View File

@ -1059,11 +1059,15 @@ binder_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
return ret;
}
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
static struct shrinker *binder_shrinker;
#else
static struct shrinker binder_shrinker = {
.count_objects = binder_shrink_count,
.scan_objects = binder_shrink_scan,
.seeks = DEFAULT_SEEKS,
};
#endif
/**
* binder_alloc_init() - called by binder_open() for per-proc initialization
@ -1084,7 +1088,16 @@ int binder_alloc_shrinker_init(void)
int ret = list_lru_init(&binder_alloc_lru);
if (ret == 0) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,0,0))
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
binder_shrinker = shrinker_alloc(0, "android-binder");
if (binder_shrinker) {
binder_shrinker->count_objects = binder_shrink_count;
binder_shrinker->scan_objects = binder_shrink_scan;
shrinker_register(binder_shrinker);
} else {
ret = -ENOMEM;
}
#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(6,0,0))
ret = register_shrinker(&binder_shrinker, "android-binder");
#else
ret = register_shrinker(&binder_shrinker);
@ -1097,7 +1110,11 @@ int binder_alloc_shrinker_init(void)
void binder_alloc_shrinker_exit(void)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
shrinker_free(binder_shrinker);
#else
unregister_shrinker(&binder_shrinker);
#endif
list_lru_destroy(&binder_alloc_lru);
}

16
binder/binderfs.c
View File

@ -146,7 +146,9 @@ static int binderfs_binder_device_create(struct inode *ref_inode,
goto err;
inode->i_ino = minor + INODE_OFFSET;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,6,0))
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
simple_inode_init_ts(inode);
#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(6,6,0))
inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
#else
inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
@ -457,7 +459,9 @@ static int binderfs_binder_ctl_create(struct super_block *sb)
}
inode->i_ino = SECOND_INODE;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,6,0))
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
simple_inode_init_ts(inode);
#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(6,6,0))
inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
#else
inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
@ -503,7 +507,9 @@ static struct inode *binderfs_make_inode(struct super_block *sb, int mode)
if (ret) {
ret->i_ino = iunique(sb, BINDERFS_MAX_MINOR + INODE_OFFSET);
ret->i_mode = mode;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,6,0))
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
simple_inode_init_ts(ret);
#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(6,6,0))
ret->i_atime = ret->i_mtime = inode_set_ctime_current(ret);
#else
ret->i_atime = ret->i_mtime = ret->i_ctime = current_time(ret);
@ -730,7 +736,9 @@ static int binderfs_fill_super(struct super_block *sb, struct fs_context *fc)
inode->i_ino = FIRST_INODE;
inode->i_fop = &simple_dir_operations;
inode->i_mode = S_IFDIR | 0755;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,6,0))
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))
simple_inode_init_ts(inode);
#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(6,6,0))
inode->i_mtime = inode->i_atime = inode_set_ctime_current(inode);
#else
inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);