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btrfs: separate out the extent state and extent buffer init code

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In order to help separate the extent buffer from the extent io tree code
we need to break up the init functions.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2022-09-09 17:53:18 -04:00 committed by David Sterba
parent cdca85b092
commit a62a3bd954
4 changed files with 31 additions and 14 deletions
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4
fs/btrfs/extent-io-tree.h
View file

@ -108,8 +108,8 @@ static inline int lock_extent(struct extent_io_tree *tree, u64 start, u64 end)
int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end);
int __init extent_io_init(void);
void __cold extent_io_exit(void);
int __init extent_state_init_cachep(void);
void __cold extent_state_free_cachep(void);
u64 count_range_bits(struct extent_io_tree *tree,
u64 *start, u64 search_end,

21
fs/btrfs/extent_io.c
View file

@ -230,7 +230,7 @@ static void submit_write_bio(struct extent_page_data *epd, int ret)
}
}
int __init extent_io_init(void)
int __init extent_state_init_cachep(void)
{
extent_state_cache = kmem_cache_create("btrfs_extent_state",
sizeof(struct extent_state), 0,
@ -238,18 +238,27 @@ int __init extent_io_init(void)
if (!extent_state_cache)
return -ENOMEM;
return 0;
}
int __init extent_buffer_init_cachep(void)
{
extent_buffer_cache = kmem_cache_create("btrfs_extent_buffer",
sizeof(struct extent_buffer), 0,
SLAB_MEM_SPREAD, NULL);
if (!extent_buffer_cache) {
kmem_cache_destroy(extent_state_cache);
if (!extent_buffer_cache)
return -ENOMEM;
}
return 0;
}
void __cold extent_io_exit(void)
void __cold extent_state_free_cachep(void)
{
btrfs_extent_state_leak_debug_check();
kmem_cache_destroy(extent_state_cache);
}
void __cold extent_buffer_free_cachep(void)
{
/*
* Make sure all delayed rcu free are flushed before we
@ -257,8 +266,6 @@ void __cold extent_io_exit(void)
*/
rcu_barrier();
kmem_cache_destroy(extent_buffer_cache);
btrfs_extent_state_leak_debug_check();
kmem_cache_destroy(extent_state_cache);
}
/*

3
fs/btrfs/extent_io.h
View file

@ -64,6 +64,9 @@ struct btrfs_fs_info;
struct io_failure_record;
struct extent_io_tree;
int __init extent_buffer_init_cachep(void);
void __cold extent_buffer_free_cachep(void);
typedef void (submit_bio_hook_t)(struct inode *inode, struct bio *bio,
int mirror_num,
enum btrfs_compression_type compress_type);

17
fs/btrfs/super.c
View file

@ -2736,13 +2736,17 @@ static int __init init_btrfs_fs(void)
if (err)
goto free_compress;
err = extent_io_init();
err = extent_state_init_cachep();
if (err)
goto free_cachep;
err = extent_buffer_init_cachep();
if (err)
goto free_extent_cachep;
err = btrfs_bioset_init();
if (err)
goto free_extent_io;
goto free_eb_cachep;
err = extent_map_init();
if (err)
@ -2800,8 +2804,10 @@ static int __init init_btrfs_fs(void)
extent_map_exit();
free_bioset:
btrfs_bioset_exit();
free_extent_io:
extent_io_exit();
free_eb_cachep:
extent_buffer_free_cachep();
free_extent_cachep:
extent_state_free_cachep();
free_cachep:
btrfs_destroy_cachep();
free_compress:
@ -2821,7 +2827,8 @@ static void __exit exit_btrfs_fs(void)
ordered_data_exit();
extent_map_exit();
btrfs_bioset_exit();
extent_io_exit();
extent_state_free_cachep();
extent_buffer_free_cachep();
btrfs_interface_exit();
unregister_filesystem(&btrfs_fs_type);
btrfs_exit_sysfs();