btrfs: separate out the extent io init function
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>
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 1a17218..dffa7c6 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -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 @@ int __init extent_io_init(void)
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);
}
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index cf3424d..e813f59 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -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
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 1b151af..843015b 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -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 @@ static int __init init_btrfs_fs(void)
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();