From: Josef Bacik <josef@toxicpanda.com>
Date: Thu, 20 Jun 2019 15:37:49 -0400
Subject: btrfs: export the excluded extents helpers
Git-commit: 6f410d1b3dbf9213ee89c569e8213511319bbd90
Patch-mainline: v5.4-rc1
References: bsc#1162831
We'll need this to move the caching stuff around.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Acked-by: Nikolay Borisov <nborisov@suse.com>
---
fs/btrfs/ctree.h | 3 +++
fs/btrfs/extent-tree.c | 36 +++++++++++++++++++-----------------
2 files changed, 22 insertions(+), 17 deletions(-)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 04785e912e52..b95d7472b2a9 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2473,6 +2473,9 @@ static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_fs_info *fs_info,
return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items;
}
+int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info,
+ u64 start, u64 num_bytes);
+void btrfs_free_excluded_extents(struct btrfs_block_group_cache *cache);
int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
unsigned long count);
void btrfs_cleanup_ref_head_accounting(struct btrfs_fs_info *fs_info,
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 721b2bcb9e95..2d92f103fa2b 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -100,8 +100,8 @@ static int btrfs_add_block_group_cache(struct btrfs_fs_info *info,
return 0;
}
-static int add_excluded_extent(struct btrfs_fs_info *fs_info,
- u64 start, u64 num_bytes)
+int btrfs_add_excluded_extent(struct btrfs_fs_info *fs_info,
+ u64 start, u64 num_bytes)
{
u64 end = start + num_bytes - 1;
set_extent_bits(&fs_info->freed_extents[0],
@@ -111,7 +111,7 @@ static int add_excluded_extent(struct btrfs_fs_info *fs_info,
return 0;
}
-static void free_excluded_extents(struct btrfs_block_group_cache *cache)
+void btrfs_free_excluded_extents(struct btrfs_block_group_cache *cache)
{
struct btrfs_fs_info *fs_info = cache->fs_info;
u64 start, end;
@@ -136,8 +136,8 @@ static int exclude_super_stripes(struct btrfs_block_group_cache *cache)
if (cache->key.objectid < BTRFS_SUPER_INFO_OFFSET) {
stripe_len = BTRFS_SUPER_INFO_OFFSET - cache->key.objectid;
cache->bytes_super += stripe_len;
- ret = add_excluded_extent(fs_info, cache->key.objectid,
- stripe_len);
+ ret = btrfs_add_excluded_extent(fs_info, cache->key.objectid,
+ stripe_len);
if (ret)
return ret;
}
@@ -170,7 +170,7 @@ static int exclude_super_stripes(struct btrfs_block_group_cache *cache)
}
cache->bytes_super += len;
- ret = add_excluded_extent(fs_info, start, len);
+ ret = btrfs_add_excluded_extent(fs_info, start, len);
if (ret) {
kfree(logical);
return ret;
@@ -450,7 +450,7 @@ static noinline void caching_thread(struct btrfs_work *work)
caching_ctl->progress = (u64)-1;
up_read(&fs_info->commit_root_sem);
- free_excluded_extents(block_group);
+ btrfs_free_excluded_extents(block_group);
mutex_unlock(&caching_ctl->mutex);
wake_up(&caching_ctl->wait);
@@ -558,7 +558,7 @@ int btrfs_cache_block_group(struct btrfs_block_group_cache *cache,
wake_up(&caching_ctl->wait);
if (ret == 1) {
put_caching_control(caching_ctl);
- free_excluded_extents(cache);
+ btrfs_free_excluded_extents(cache);
return 0;
}
} else {
@@ -4163,7 +4163,8 @@ static int __exclude_logged_extent(struct btrfs_fs_info *fs_info,
mutex_lock(&caching_ctl->mutex);
if (start >= caching_ctl->progress) {
- ret = add_excluded_extent(fs_info, start, num_bytes);
+ ret = btrfs_add_excluded_extent(fs_info, start,
+ num_bytes);
} else if (start + num_bytes <= caching_ctl->progress) {
ret = btrfs_remove_free_space(block_group,
start, num_bytes);
@@ -4177,7 +4178,8 @@ static int __exclude_logged_extent(struct btrfs_fs_info *fs_info,
num_bytes = (start + num_bytes) -
caching_ctl->progress;
start = caching_ctl->progress;
- ret = add_excluded_extent(fs_info, start, num_bytes);
+ ret = btrfs_add_excluded_extent(fs_info, start,
+ num_bytes);
}
out_lock:
mutex_unlock(&caching_ctl->mutex);
@@ -7513,7 +7515,7 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info)
*/
if (block_group->cached == BTRFS_CACHE_NO ||
block_group->cached == BTRFS_CACHE_ERROR)
- free_excluded_extents(block_group);
+ btrfs_free_excluded_extents(block_group);
btrfs_remove_free_space_cache(block_group);
ASSERT(block_group->cached != BTRFS_CACHE_STARTED);
@@ -7806,7 +7808,7 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info)
* We may have excluded something, so call this just in
* case.
*/
- free_excluded_extents(cache);
+ btrfs_free_excluded_extents(cache);
btrfs_put_block_group(cache);
goto error;
}
@@ -7821,14 +7823,14 @@ int btrfs_read_block_groups(struct btrfs_fs_info *info)
if (found_key.offset == btrfs_block_group_used(&cache->item)) {
cache->last_byte_to_unpin = (u64)-1;
cache->cached = BTRFS_CACHE_FINISHED;
- free_excluded_extents(cache);
+ btrfs_free_excluded_extents(cache);
} else if (btrfs_block_group_used(&cache->item) == 0) {
cache->last_byte_to_unpin = (u64)-1;
cache->cached = BTRFS_CACHE_FINISHED;
add_new_free_space(cache, found_key.objectid,
found_key.objectid +
found_key.offset);
- free_excluded_extents(cache);
+ btrfs_free_excluded_extents(cache);
}
ret = btrfs_add_block_group_cache(info, cache);
@@ -7952,14 +7954,14 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans, u64 bytes_used,
* We may have excluded something, so call this just in
* case.
*/
- free_excluded_extents(cache);
+ btrfs_free_excluded_extents(cache);
btrfs_put_block_group(cache);
return ret;
}
add_new_free_space(cache, chunk_offset, chunk_offset + size);
- free_excluded_extents(cache);
+ btrfs_free_excluded_extents(cache);
#ifdef CONFIG_BTRFS_DEBUG
if (btrfs_should_fragment_free_space(cache)) {
@@ -8075,7 +8077,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
* Free the reserved super bytes from this block group before
* remove it.
*/
- free_excluded_extents(block_group);
+ btrfs_free_excluded_extents(block_group);
btrfs_free_ref_tree_range(fs_info, block_group->key.objectid,
block_group->key.offset);