From: Josef Bacik <josef@toxicpanda.com>
Date: Thu, 21 Oct 2021 14:58:34 -0400
Git-commit: 747942073608167af3cdbaace2556b13c0cff9f0
Patch-mainline: v5.17-rc1
References: bsc#1197915
Subject: [PATCH] btrfs: introduce item_nr token variant helpers
The last remaining place where we have the pattern of
item = btrfs_item_nr(slot)
<do something with the item>
are the token helpers. Handle this by introducing token helpers that
will do the btrfs_item_nr() work inside of the helper itself, and then
convert all users of the btrfs_item token helpers to the new _nr()
variants.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
---
fs/btrfs/ctree.c | 65 +++++++++++++++++++-----------------------------
fs/btrfs/ctree.h | 32 ++++++++++++++++++++++++
2 files changed, 57 insertions(+), 40 deletions(-)
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 9e857b74ea3f..dfcc33443f7a 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2670,7 +2670,6 @@ static noinline int __push_leaf_right(struct btrfs_path *path,
u32 i;
int push_space = 0;
int push_items = 0;
- struct btrfs_item *item;
u32 nr;
u32 right_nritems;
u32 data_end;
@@ -2702,11 +2701,12 @@ static noinline int __push_leaf_right(struct btrfs_path *path,
push_space += data_size;
this_item_size = btrfs_item_size_nr(left, i);
- if (this_item_size + sizeof(*item) + push_space > free_space)
+ if (this_item_size + sizeof(struct btrfs_item) +
+ push_space > free_space)
break;
push_items++;
- push_space += this_item_size + sizeof(*item);
+ push_space += this_item_size + sizeof(struct btrfs_item);
if (i == 0)
break;
i--;
@@ -2751,9 +2751,8 @@ static noinline int __push_leaf_right(struct btrfs_path *path,
btrfs_set_header_nritems(right, right_nritems);
push_space = BTRFS_LEAF_DATA_SIZE(fs_info);
for (i = 0; i < right_nritems; i++) {
- item = btrfs_item_nr(i);
- push_space -= btrfs_token_item_size(&token, item);
- btrfs_set_token_item_offset(&token, item, push_space);
+ push_space -= btrfs_token_item_size_nr(&token, i);
+ btrfs_set_token_item_offset_nr(&token, i, push_space);
}
left_nritems -= push_items;
@@ -2898,7 +2897,6 @@ static noinline int __push_leaf_left(struct btrfs_path *path, int data_size,
int i;
int push_space = 0;
int push_items = 0;
- struct btrfs_item *item;
u32 old_left_nritems;
u32 nr;
int ret = 0;
@@ -2927,11 +2925,12 @@ static noinline int __push_leaf_left(struct btrfs_path *path, int data_size,
push_space += data_size;
this_item_size = btrfs_item_size_nr(right, i);
- if (this_item_size + sizeof(*item) + push_space > free_space)
+ if (this_item_size + sizeof(struct btrfs_item) + push_space >
+ free_space)
break;
push_items++;
- push_space += this_item_size + sizeof(*item);
+ push_space += this_item_size + sizeof(struct btrfs_item);
}
if (push_items == 0) {
@@ -2962,10 +2961,8 @@ static noinline int __push_leaf_left(struct btrfs_path *path, int data_size,
for (i = old_left_nritems; i < old_left_nritems + push_items; i++) {
u32 ioff;
- item = btrfs_item_nr(i);
-
- ioff = btrfs_token_item_offset(&token, item);
- btrfs_set_token_item_offset(&token, item,
+ ioff = btrfs_token_item_offset_nr(&token, i);
+ btrfs_set_token_item_offset_nr(&token, i,
ioff - (BTRFS_LEAF_DATA_SIZE(fs_info) - old_left_item_size));
}
btrfs_set_header_nritems(left, old_left_nritems + push_items);
@@ -2994,10 +2991,8 @@ static noinline int __push_leaf_left(struct btrfs_path *path, int data_size,
btrfs_set_header_nritems(right, right_nritems);
push_space = BTRFS_LEAF_DATA_SIZE(fs_info);
for (i = 0; i < right_nritems; i++) {
- item = btrfs_item_nr(i);
-
- push_space = push_space - btrfs_token_item_size(&token, item);
- btrfs_set_token_item_offset(&token, item, push_space);
+ push_space = push_space - btrfs_token_item_size_nr(&token, i);
+ btrfs_set_token_item_offset_nr(&token, i, push_space);
}
btrfs_mark_buffer_dirty(left);
@@ -3140,11 +3135,10 @@ static noinline void copy_for_split(struct btrfs_trans_handle *trans,
btrfs_init_map_token(&token, right);
for (i = 0; i < nritems; i++) {
- struct btrfs_item *item = btrfs_item_nr(i);
u32 ioff;
- ioff = btrfs_token_item_offset(&token, item);
- btrfs_set_token_item_offset(&token, item, ioff + rt_data_off);
+ ioff = btrfs_token_item_offset_nr(&token, i);
+ btrfs_set_token_item_offset_nr(&token, i, ioff + rt_data_off);
}
btrfs_set_header_nritems(l, mid);
@@ -3579,7 +3573,6 @@ void btrfs_truncate_item(struct btrfs_path *path, u32 new_size, int from_end)
{
int slot;
struct extent_buffer *leaf;
- struct btrfs_item *item;
u32 nritems;
unsigned int data_end;
unsigned int old_data_start;
@@ -3612,10 +3605,9 @@ void btrfs_truncate_item(struct btrfs_path *path, u32 new_size, int from_end)
btrfs_init_map_token(&token, leaf);
for (i = slot; i < nritems; i++) {
u32 ioff;
- item = btrfs_item_nr(i);
- ioff = btrfs_token_item_offset(&token, item);
- btrfs_set_token_item_offset(&token, item, ioff + size_diff);
+ ioff = btrfs_token_item_offset_nr(&token, i);
+ btrfs_set_token_item_offset_nr(&token, i, ioff + size_diff);
}
/* shift the data */
@@ -3674,7 +3666,6 @@ void btrfs_extend_item(struct btrfs_path *path, u32 data_size)
{
int slot;
struct extent_buffer *leaf;
- struct btrfs_item *item;
u32 nritems;
unsigned int data_end;
unsigned int old_data;
@@ -3709,10 +3700,9 @@ void btrfs_extend_item(struct btrfs_path *path, u32 data_size)
btrfs_init_map_token(&token, leaf);
for (i = slot; i < nritems; i++) {
u32 ioff;
- item = btrfs_item_nr(i);
- ioff = btrfs_token_item_offset(&token, item);
- btrfs_set_token_item_offset(&token, item, ioff - data_size);
+ ioff = btrfs_token_item_offset_nr(&token, i);
+ btrfs_set_token_item_offset_nr(&token, i, ioff - data_size);
}
/* shift the data */
@@ -3744,7 +3734,6 @@ static void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *p
const struct btrfs_item_batch *batch)
{
struct btrfs_fs_info *fs_info = root->fs_info;
- struct btrfs_item *item;
int i;
u32 nritems;
unsigned int data_end;
@@ -3797,10 +3786,9 @@ static void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *p
for (i = slot; i < nritems; i++) {
u32 ioff;
- item = btrfs_item_nr(i);
- ioff = btrfs_token_item_offset(&token, item);
- btrfs_set_token_item_offset(&token, item,
- ioff - batch->total_data_size);
+ ioff = btrfs_token_item_offset_nr(&token, i);
+ btrfs_set_token_item_offset_nr(&token, i,
+ ioff - batch->total_data_size);
}
/* shift the items */
memmove_extent_buffer(leaf, btrfs_item_nr_offset(slot + batch->nr),
@@ -3819,10 +3807,9 @@ static void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *p
for (i = 0; i < batch->nr; i++) {
btrfs_cpu_key_to_disk(&disk_key, &batch->keys[i]);
btrfs_set_item_key(leaf, &disk_key, slot + i);
- item = btrfs_item_nr(slot + i);
data_end -= batch->data_sizes[i];
- btrfs_set_token_item_offset(&token, item, data_end);
- btrfs_set_token_item_size(&token, item, batch->data_sizes[i]);
+ btrfs_set_token_item_offset_nr(&token, slot + i, data_end);
+ btrfs_set_token_item_size_nr(&token, slot + i, batch->data_sizes[i]);
}
btrfs_set_header_nritems(leaf, nritems + batch->nr);
@@ -4030,7 +4017,6 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
{
struct btrfs_fs_info *fs_info = root->fs_info;
struct extent_buffer *leaf;
- struct btrfs_item *item;
u32 last_off;
u32 dsize = 0;
int ret = 0;
@@ -4059,9 +4045,8 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
for (i = slot + nr; i < nritems; i++) {
u32 ioff;
- item = btrfs_item_nr(i);
- ioff = btrfs_token_item_offset(&token, item);
- btrfs_set_token_item_offset(&token, item, ioff + dsize);
+ ioff = btrfs_token_item_offset_nr(&token, i);
+ btrfs_set_token_item_offset_nr(&token, i, ioff + dsize);
}
memmove_extent_buffer(leaf, btrfs_item_nr_offset(slot),
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index e0cb78fa5810..53fc20482c8d 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2009,6 +2009,38 @@ static inline void btrfs_set_item_offset_nr(struct extent_buffer *eb, int nr,
btrfs_set_item_offset(eb, btrfs_item_nr(nr), val);
}
+static inline u32 btrfs_token_item_offset_nr(struct btrfs_map_token *token,
+ int slot)
+{
+ struct btrfs_item *item = btrfs_item_nr(slot);
+
+ return btrfs_token_item_offset(token, item);
+}
+
+static inline u32 btrfs_token_item_size_nr(struct btrfs_map_token *token,
+ int slot)
+{
+ struct btrfs_item *item = btrfs_item_nr(slot);
+
+ return btrfs_token_item_size(token, item);
+}
+
+static inline void btrfs_set_token_item_offset_nr(struct btrfs_map_token *token,
+ int slot, u32 val)
+{
+ struct btrfs_item *item = btrfs_item_nr(slot);
+
+ btrfs_set_token_item_offset(token, item, val);
+}
+
+static inline void btrfs_set_token_item_size_nr(struct btrfs_map_token *token,
+ int slot, u32 val)
+{
+ struct btrfs_item *item = btrfs_item_nr(slot);
+
+ btrfs_set_token_item_size(token, item, val);
+}
+
static inline void btrfs_item_key(const struct extent_buffer *eb,
struct btrfs_disk_key *disk_key, int nr)
{
--
2.26.2