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btrfs: separate out the extent io init function

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We are moving extent_io_tree into it's on file, so separate out the
extent_state init stuff from extent_io_tree_init().

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 2019-09-23 10:05:18 -04:00 committed by David Sterba
parent 33ca832fef
commit 6f0d04f8e7
3 changed files with 22 additions and 9 deletions
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20
fs/btrfs/extent_io.c
View File

@ -200,19 +200,23 @@ static int __must_check flush_write_bio(struct extent_page_data *epd)
return ret;
}
int __init extent_io_init(void)
int __init extent_state_cache_init(void)
{
extent_state_cache = kmem_cache_create("btrfs_extent_state",
sizeof(struct extent_state), 0,
SLAB_MEM_SPREAD, NULL);
if (!extent_state_cache)
return -ENOMEM;
return 0;
}
int __init extent_io_init(void)
{
extent_buffer_cache = kmem_cache_create("btrfs_extent_buffer",
sizeof(struct extent_buffer), 0,
SLAB_MEM_SPREAD, NULL);
if (!extent_buffer_cache)
goto free_state_cache;
return -ENOMEM;
if (bioset_init(&btrfs_bioset, BIO_POOL_SIZE,
offsetof(struct btrfs_io_bio, bio),
@ -230,24 +234,24 @@ free_bioset:
free_buffer_cache:
kmem_cache_destroy(extent_buffer_cache);
extent_buffer_cache = NULL;
free_state_cache:
kmem_cache_destroy(extent_state_cache);
extent_state_cache = NULL;
return -ENOMEM;
}
void __cold extent_state_cache_exit(void)
{
btrfs_extent_state_leak_debug_check();
kmem_cache_destroy(extent_state_cache);
}
void __cold extent_io_exit(void)
{
btrfs_extent_buffer_leak_debug_check();
btrfs_extent_state_leak_debug_check();
/*
* Make sure all delayed rcu free are flushed before we
* destroy caches.
*/
rcu_barrier();
kmem_cache_destroy(extent_state_cache);
kmem_cache_destroy(extent_buffer_cache);
bioset_exit(&btrfs_bioset);
}

2
fs/btrfs/extent_io.h
View File

@ -556,4 +556,6 @@ bool find_lock_delalloc_range(struct inode *inode,
struct extent_buffer *alloc_test_extent_buffer(struct btrfs_fs_info *fs_info,
u64 start);
int __init extent_state_cache_init(void);
void __cold extent_state_cache_exit(void);
#endif

9
fs/btrfs/super.c
View File

@ -2360,10 +2360,14 @@ static int __init init_btrfs_fs(void)
if (err)
goto free_cachep;
err = extent_map_init();
err = extent_state_cache_init();
if (err)
goto free_extent_io;
err = extent_map_init();
if (err)
goto free_extent_state_cache;
err = ordered_data_init();
if (err)
goto free_extent_map;
@ -2422,6 +2426,8 @@ free_ordered_data:
ordered_data_exit();
free_extent_map:
extent_map_exit();
free_extent_state_cache:
extent_state_cache_exit();
free_extent_io:
extent_io_exit();
free_cachep:
@ -2442,6 +2448,7 @@ static void __exit exit_btrfs_fs(void)
btrfs_prelim_ref_exit();
ordered_data_exit();
extent_map_exit();
extent_state_cache_exit();
extent_io_exit();
btrfs_interface_exit();
btrfs_end_io_wq_exit();