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Btrfs: add __init macro to btrfs init functions

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Adding __init macro gives kernel a hint that this function is only used
during the initialization phase and its memory resources can be freed up
after.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Liu Bo 2017-11-02 17:21:50 -06:00 committed by David Sterba
parent c74a0b0237
commit f5c29bd9db
8 changed files with 11 additions and 11 deletions
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2
fs/btrfs/compression.h
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@ -75,7 +75,7 @@ struct compressed_bio {
u32 sums;
};
void btrfs_init_compress(void);
void __init btrfs_init_compress(void);
void btrfs_exit_compress(void);
int btrfs_compress_pages(unsigned int type_level, struct address_space *mapping,

6
fs/btrfs/ctree.h
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@ -3197,7 +3197,7 @@ int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc);
struct inode *btrfs_alloc_inode(struct super_block *sb);
void btrfs_destroy_inode(struct inode *inode);
int btrfs_drop_inode(struct inode *inode);
int btrfs_init_cachep(void);
int __init btrfs_init_cachep(void);
void btrfs_destroy_cachep(void);
long btrfs_ioctl_trans_end(struct file *file);
struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
@ -3248,7 +3248,7 @@ ssize_t btrfs_dedupe_file_range(struct file *src_file, u64 loff, u64 olen,
struct file *dst_file, u64 dst_loff);
/* file.c */
int btrfs_auto_defrag_init(void);
int __init btrfs_auto_defrag_init(void);
void btrfs_auto_defrag_exit(void);
int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans,
struct btrfs_inode *inode);
@ -3283,7 +3283,7 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
/* sysfs.c */
int btrfs_init_sysfs(void);
int __init btrfs_init_sysfs(void);
void btrfs_exit_sysfs(void);
int btrfs_sysfs_add_mounted(struct btrfs_fs_info *fs_info);
void btrfs_sysfs_remove_mounted(struct btrfs_fs_info *fs_info);

2
fs/btrfs/delayed-ref.c
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@ -937,7 +937,7 @@ void btrfs_delayed_ref_exit(void)
kmem_cache_destroy(btrfs_delayed_extent_op_cachep);
}
int btrfs_delayed_ref_init(void)
int __init btrfs_delayed_ref_init(void)
{
btrfs_delayed_ref_head_cachep = kmem_cache_create(
"btrfs_delayed_ref_head",

2
fs/btrfs/delayed-ref.h
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@ -203,7 +203,7 @@ extern struct kmem_cache *btrfs_delayed_tree_ref_cachep;
extern struct kmem_cache *btrfs_delayed_data_ref_cachep;
extern struct kmem_cache *btrfs_delayed_extent_op_cachep;
int btrfs_delayed_ref_init(void);
int __init btrfs_delayed_ref_init(void);
void btrfs_delayed_ref_exit(void);
static inline struct btrfs_delayed_extent_op *

2
fs/btrfs/file.c
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@ -3143,7 +3143,7 @@ void btrfs_auto_defrag_exit(void)
kmem_cache_destroy(btrfs_inode_defrag_cachep);
}
int btrfs_auto_defrag_init(void)
int __init btrfs_auto_defrag_init(void)
{
btrfs_inode_defrag_cachep = kmem_cache_create("btrfs_inode_defrag",
sizeof(struct inode_defrag), 0,

2
fs/btrfs/inode.c
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@ -9569,7 +9569,7 @@ void btrfs_destroy_cachep(void)
kmem_cache_destroy(btrfs_free_space_cachep);
}
int btrfs_init_cachep(void)
int __init btrfs_init_cachep(void)
{
btrfs_inode_cachep = kmem_cache_create("btrfs_inode",
sizeof(struct btrfs_inode), 0,

4
fs/btrfs/super.c
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@ -2324,7 +2324,7 @@ static struct miscdevice btrfs_misc = {
MODULE_ALIAS_MISCDEV(BTRFS_MINOR);
MODULE_ALIAS("devname:btrfs-control");
static int btrfs_interface_init(void)
static int __init btrfs_interface_init(void)
{
return misc_register(&btrfs_misc);
}
@ -2334,7 +2334,7 @@ static void btrfs_interface_exit(void)
misc_deregister(&btrfs_misc);
}
static void btrfs_print_mod_info(void)
static void __init btrfs_print_mod_info(void)
{
pr_info("Btrfs loaded, crc32c=%s"
#ifdef CONFIG_BTRFS_DEBUG

2
fs/btrfs/sysfs.c
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@ -897,7 +897,7 @@ static int btrfs_init_debugfs(void)
return 0;
}
int btrfs_init_sysfs(void)
int __init btrfs_init_sysfs(void)
{
int ret;