The following functions always return 0.
- add_delayed_ref_head()
- add_delayed_tree_ref()
- add_delayed_data_ref()
- add_excluded_extent()
Therefore, check by BUG_ON() is unnecessary at the caller of these
functions.
Signed-off-by: Tsutomu Itoh <t-i...@jp.fujitsu.com>
---
fs/btrfs/delayed-ref.c | 32 +++++++++++++-------------------
fs/btrfs/extent-tree.c | 14 ++++----------
2 files changed, 17 insertions(+), 29 deletions(-)
diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
index 125cf76..ce0c728 100644
--- a/fs/btrfs/delayed-ref.c
+++ b/fs/btrfs/delayed-ref.c
@@ -588,7 +588,6 @@ int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle
*trans,
struct btrfs_delayed_tree_ref *ref;
struct btrfs_delayed_ref_head *head_ref;
struct btrfs_delayed_ref_root *delayed_refs;
- int ret;
BUG_ON(extent_op && extent_op->is_data);
ref = kmalloc(sizeof(*ref), GFP_NOFS);
@@ -610,13 +609,12 @@ int btrfs_add_delayed_tree_ref(struct btrfs_trans_handle
*trans,
* insert both the head node and the new ref without dropping
* the spin lock
*/
- ret = add_delayed_ref_head(trans, &head_ref->node, bytenr, num_bytes,
- action, 0);
- BUG_ON(ret);
+ add_delayed_ref_head(trans, &head_ref->node, bytenr, num_bytes,
+ action, 0);
+
+ add_delayed_tree_ref(trans, &ref->node, bytenr, num_bytes,
+ parent, ref_root, level, action);
- ret = add_delayed_tree_ref(trans, &ref->node, bytenr, num_bytes,
- parent, ref_root, level, action);
- BUG_ON(ret);
spin_unlock(&delayed_refs->lock);
return 0;
}
@@ -633,7 +631,6 @@ int btrfs_add_delayed_data_ref(struct btrfs_trans_handle
*trans,
struct btrfs_delayed_data_ref *ref;
struct btrfs_delayed_ref_head *head_ref;
struct btrfs_delayed_ref_root *delayed_refs;
- int ret;
BUG_ON(extent_op && !extent_op->is_data);
ref = kmalloc(sizeof(*ref), GFP_NOFS);
@@ -655,13 +652,12 @@ int btrfs_add_delayed_data_ref(struct btrfs_trans_handle
*trans,
* insert both the head node and the new ref without dropping
* the spin lock
*/
- ret = add_delayed_ref_head(trans, &head_ref->node, bytenr, num_bytes,
- action, 1);
- BUG_ON(ret);
+ add_delayed_ref_head(trans, &head_ref->node, bytenr, num_bytes,
+ action, 1);
+
+ add_delayed_data_ref(trans, &ref->node, bytenr, num_bytes,
+ parent, ref_root, owner, offset, action);
- ret = add_delayed_data_ref(trans, &ref->node, bytenr, num_bytes,
- parent, ref_root, owner, offset, action);
- BUG_ON(ret);
spin_unlock(&delayed_refs->lock);
return 0;
}
@@ -672,7 +668,6 @@ int btrfs_add_delayed_extent_op(struct btrfs_trans_handle
*trans,
{
struct btrfs_delayed_ref_head *head_ref;
struct btrfs_delayed_ref_root *delayed_refs;
- int ret;
head_ref = kmalloc(sizeof(*head_ref), GFP_NOFS);
if (!head_ref)
@@ -683,10 +678,9 @@ int btrfs_add_delayed_extent_op(struct btrfs_trans_handle
*trans,
delayed_refs = &trans->transaction->delayed_refs;
spin_lock(&delayed_refs->lock);
- ret = add_delayed_ref_head(trans, &head_ref->node, bytenr,
- num_bytes, BTRFS_UPDATE_DELAYED_HEAD,
- extent_op->is_data);
- BUG_ON(ret);
+ add_delayed_ref_head(trans, &head_ref->node, bytenr,
+ num_bytes, BTRFS_UPDATE_DELAYED_HEAD,
+ extent_op->is_data);
spin_unlock(&delayed_refs->lock);
return 0;
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 1f61bf5..15286d1 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -225,9 +225,7 @@ static int exclude_super_stripes(struct btrfs_root *root,
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(root, cache->key.objectid,
- stripe_len);
- BUG_ON(ret);
+ add_excluded_extent(root, cache->key.objectid, stripe_len);
}
for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) {
@@ -239,9 +237,7 @@ static int exclude_super_stripes(struct btrfs_root *root,
while (nr--) {
cache->bytes_super += stripe_len;
- ret = add_excluded_extent(root, logical[nr],
- stripe_len);
- BUG_ON(ret);
+ add_excluded_extent(root, logical[nr], stripe_len);
}
kfree(logical);
@@ -5581,8 +5577,7 @@ int btrfs_alloc_logged_file_extent(struct
btrfs_trans_handle *trans,
mutex_lock(&caching_ctl->mutex);
if (start >= caching_ctl->progress) {
- ret = add_excluded_extent(root, start, num_bytes);
- BUG_ON(ret);
+ add_excluded_extent(root, start, num_bytes);
} else if (start + num_bytes <= caching_ctl->progress) {
ret = btrfs_remove_free_space(block_group,
start, num_bytes);
@@ -5596,8 +5591,7 @@ int btrfs_alloc_logged_file_extent(struct
btrfs_trans_handle *trans,
start = caching_ctl->progress;
num_bytes = ins->objectid + ins->offset -
caching_ctl->progress;
- ret = add_excluded_extent(root, start, num_bytes);
- BUG_ON(ret);
+ add_excluded_extent(root, start, num_bytes);
}
mutex_unlock(&caching_ctl->mutex);
--
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