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Diffstat (limited to 'fs/btrfs/ctree.c')
-rw-r--r--fs/btrfs/ctree.c189
1 files changed, 2 insertions, 187 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 2e667868e0d..d2431284b91 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -626,14 +626,6 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
for (i = start_slot; i < end_slot; i++) {
int close = 1;
- if (!parent->map_token) {
- map_extent_buffer(parent,
- btrfs_node_key_ptr_offset(i),
- sizeof(struct btrfs_key_ptr),
- &parent->map_token, &parent->kaddr,
- &parent->map_start, &parent->map_len,
- KM_USER1);
- }
btrfs_node_key(parent, &disk_key, i);
if (!progress_passed && comp_keys(&disk_key, progress) < 0)
continue;
@@ -656,11 +648,6 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
last_block = blocknr;
continue;
}
- if (parent->map_token) {
- unmap_extent_buffer(parent, parent->map_token,
- KM_USER1);
- parent->map_token = NULL;
- }
cur = btrfs_find_tree_block(root, blocknr, blocksize);
if (cur)
@@ -701,11 +688,6 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans,
btrfs_tree_unlock(cur);
free_extent_buffer(cur);
}
- if (parent->map_token) {
- unmap_extent_buffer(parent, parent->map_token,
- KM_USER1);
- parent->map_token = NULL;
- }
return err;
}
@@ -746,7 +728,6 @@ static noinline int generic_bin_search(struct extent_buffer *eb,
struct btrfs_disk_key *tmp = NULL;
struct btrfs_disk_key unaligned;
unsigned long offset;
- char *map_token = NULL;
char *kaddr = NULL;
unsigned long map_start = 0;
unsigned long map_len = 0;
@@ -756,18 +737,13 @@ static noinline int generic_bin_search(struct extent_buffer *eb,
mid = (low + high) / 2;
offset = p + mid * item_size;
- if (!map_token || offset < map_start ||
+ if (!kaddr || offset < map_start ||
(offset + sizeof(struct btrfs_disk_key)) >
map_start + map_len) {
- if (map_token) {
- unmap_extent_buffer(eb, map_token, KM_USER0);
- map_token = NULL;
- }
err = map_private_extent_buffer(eb, offset,
sizeof(struct btrfs_disk_key),
- &map_token, &kaddr,
- &map_start, &map_len, KM_USER0);
+ &kaddr, &map_start, &map_len);
if (!err) {
tmp = (struct btrfs_disk_key *)(kaddr + offset -
@@ -790,14 +766,10 @@ static noinline int generic_bin_search(struct extent_buffer *eb,
high = mid;
else {
*slot = mid;
- if (map_token)
- unmap_extent_buffer(eb, map_token, KM_USER0);
return 0;
}
}
*slot = low;
- if (map_token)
- unmap_extent_buffer(eb, map_token, KM_USER0);
return 1;
}
@@ -1228,7 +1200,6 @@ static void reada_for_search(struct btrfs_root *root,
u32 nr;
u32 blocksize;
u32 nscan = 0;
- bool map = true;
if (level != 1)
return;
@@ -1250,19 +1221,8 @@ static void reada_for_search(struct btrfs_root *root,
nritems = btrfs_header_nritems(node);
nr = slot;
- if (node->map_token || path->skip_locking)
- map = false;
while (1) {
- if (map && !node->map_token) {
- unsigned long offset = btrfs_node_key_ptr_offset(nr);
- map_private_extent_buffer(node, offset,
- sizeof(struct btrfs_key_ptr),
- &node->map_token,
- &node->kaddr,
- &node->map_start,
- &node->map_len, KM_USER1);
- }
if (direction < 0) {
if (nr == 0)
break;
@@ -1281,11 +1241,6 @@ static void reada_for_search(struct btrfs_root *root,
if ((search <= target && target - search <= 65536) ||
(search > target && search - target <= 65536)) {
gen = btrfs_node_ptr_generation(node, nr);
- if (map && node->map_token) {
- unmap_extent_buffer(node, node->map_token,
- KM_USER1);
- node->map_token = NULL;
- }
readahead_tree_block(root, search, blocksize, gen);
nread += blocksize;
}
@@ -1293,10 +1248,6 @@ static void reada_for_search(struct btrfs_root *root,
if ((nread > 65536 || nscan > 32))
break;
}
- if (map && node->map_token) {
- unmap_extent_buffer(node, node->map_token, KM_USER1);
- node->map_token = NULL;
- }
}
/*
@@ -2253,14 +2204,6 @@ static noinline int __push_leaf_right(struct btrfs_trans_handle *trans,
if (path->slots[0] == i)
push_space += data_size;
- if (!left->map_token) {
- map_extent_buffer(left, (unsigned long)item,
- sizeof(struct btrfs_item),
- &left->map_token, &left->kaddr,
- &left->map_start, &left->map_len,
- KM_USER1);
- }
-
this_item_size = btrfs_item_size(left, item);
if (this_item_size + sizeof(*item) + push_space > free_space)
break;
@@ -2271,10 +2214,6 @@ static noinline int __push_leaf_right(struct btrfs_trans_handle *trans,
break;
i--;
}
- if (left->map_token) {
- unmap_extent_buffer(left, left->map_token, KM_USER1);
- left->map_token = NULL;
- }
if (push_items == 0)
goto out_unlock;
@@ -2316,21 +2255,10 @@ static noinline int __push_leaf_right(struct btrfs_trans_handle *trans,
push_space = BTRFS_LEAF_DATA_SIZE(root);
for (i = 0; i < right_nritems; i++) {
item = btrfs_item_nr(right, i);
- if (!right->map_token) {
- map_extent_buffer(right, (unsigned long)item,
- sizeof(struct btrfs_item),
- &right->map_token, &right->kaddr,
- &right->map_start, &right->map_len,
- KM_USER1);
- }
push_space -= btrfs_item_size(right, item);
btrfs_set_item_offset(right, item, push_space);
}
- if (right->map_token) {
- unmap_extent_buffer(right, right->map_token, KM_USER1);
- right->map_token = NULL;
- }
left_nritems -= push_items;
btrfs_set_header_nritems(left, left_nritems);
@@ -2467,13 +2395,6 @@ static noinline int __push_leaf_left(struct btrfs_trans_handle *trans,
for (i = 0; i < nr; i++) {
item = btrfs_item_nr(right, i);
- if (!right->map_token) {
- map_extent_buffer(right, (unsigned long)item,
- sizeof(struct btrfs_item),
- &right->map_token, &right->kaddr,
- &right->map_start, &right->map_len,
- KM_USER1);
- }
if (!empty && push_items > 0) {
if (path->slots[0] < i)
@@ -2496,11 +2417,6 @@ static noinline int __push_leaf_left(struct btrfs_trans_handle *trans,
push_space += this_item_size + sizeof(*item);
}
- if (right->map_token) {
- unmap_extent_buffer(right, right->map_token, KM_USER1);
- right->map_token = NULL;
- }
-
if (push_items == 0) {
ret = 1;
goto out;
@@ -2530,23 +2446,12 @@ static noinline int __push_leaf_left(struct btrfs_trans_handle *trans,
u32 ioff;
item = btrfs_item_nr(left, i);
- if (!left->map_token) {
- map_extent_buffer(left, (unsigned long)item,
- sizeof(struct btrfs_item),
- &left->map_token, &left->kaddr,
- &left->map_start, &left->map_len,
- KM_USER1);
- }
ioff = btrfs_item_offset(left, item);
btrfs_set_item_offset(left, item,
ioff - (BTRFS_LEAF_DATA_SIZE(root) - old_left_item_size));
}
btrfs_set_header_nritems(left, old_left_nritems + push_items);
- if (left->map_token) {
- unmap_extent_buffer(left, left->map_token, KM_USER1);
- left->map_token = NULL;
- }
/* fixup right node */
if (push_items > right_nritems) {
@@ -2574,21 +2479,9 @@ static noinline int __push_leaf_left(struct btrfs_trans_handle *trans,
for (i = 0; i < right_nritems; i++) {
item = btrfs_item_nr(right, i);
- if (!right->map_token) {
- map_extent_buffer(right, (unsigned long)item,
- sizeof(struct btrfs_item),
- &right->map_token, &right->kaddr,
- &right->map_start, &right->map_len,
- KM_USER1);
- }
-
push_space = push_space - btrfs_item_size(right, item);
btrfs_set_item_offset(right, item, push_space);
}
- if (right->map_token) {
- unmap_extent_buffer(right, right->map_token, KM_USER1);
- right->map_token = NULL;
- }
btrfs_mark_buffer_dirty(left);
if (right_nritems)
@@ -2729,23 +2622,10 @@ static noinline int copy_for_split(struct btrfs_trans_handle *trans,
struct btrfs_item *item = btrfs_item_nr(right, i);
u32 ioff;
- if (!right->map_token) {
- map_extent_buffer(right, (unsigned long)item,
- sizeof(struct btrfs_item),
- &right->map_token, &right->kaddr,
- &right->map_start, &right->map_len,
- KM_USER1);
- }
-
ioff = btrfs_item_offset(right, item);
btrfs_set_item_offset(right, item, ioff + rt_data_off);
}
- if (right->map_token) {
- unmap_extent_buffer(right, right->map_token, KM_USER1);
- right->map_token = NULL;
- }
-
btrfs_set_header_nritems(l, mid);
ret = 0;
btrfs_item_key(right, &disk_key, 0);
@@ -3264,23 +3144,10 @@ int btrfs_truncate_item(struct btrfs_trans_handle *trans,
u32 ioff;
item = btrfs_item_nr(leaf, i);
- if (!leaf->map_token) {
- map_extent_buffer(leaf, (unsigned long)item,
- sizeof(struct btrfs_item),
- &leaf->map_token, &leaf->kaddr,
- &leaf->map_start, &leaf->map_len,
- KM_USER1);
- }
-
ioff = btrfs_item_offset(leaf, item);
btrfs_set_item_offset(leaf, item, ioff + size_diff);
}
- if (leaf->map_token) {
- unmap_extent_buffer(leaf, leaf->map_token, KM_USER1);
- leaf->map_token = NULL;
- }
-
/* shift the data */
if (from_end) {
memmove_extent_buffer(leaf, btrfs_leaf_data(leaf) +
@@ -3377,22 +3244,10 @@ int btrfs_extend_item(struct btrfs_trans_handle *trans,
u32 ioff;
item = btrfs_item_nr(leaf, i);
- if (!leaf->map_token) {
- map_extent_buffer(leaf, (unsigned long)item,
- sizeof(struct btrfs_item),
- &leaf->map_token, &leaf->kaddr,
- &leaf->map_start, &leaf->map_len,
- KM_USER1);
- }
ioff = btrfs_item_offset(leaf, item);
btrfs_set_item_offset(leaf, item, ioff - data_size);
}
- if (leaf->map_token) {
- unmap_extent_buffer(leaf, leaf->map_token, KM_USER1);
- leaf->map_token = NULL;
- }
-
/* shift the data */
memmove_extent_buffer(leaf, btrfs_leaf_data(leaf) +
data_end - data_size, btrfs_leaf_data(leaf) +
@@ -3494,27 +3349,13 @@ int btrfs_insert_some_items(struct btrfs_trans_handle *trans,
* item0..itemN ... dataN.offset..dataN.size .. data0.size
*/
/* first correct the data pointers */
- WARN_ON(leaf->map_token);
for (i = slot; i < nritems; i++) {
u32 ioff;
item = btrfs_item_nr(leaf, i);
- if (!leaf->map_token) {
- map_extent_buffer(leaf, (unsigned long)item,
- sizeof(struct btrfs_item),
- &leaf->map_token, &leaf->kaddr,
- &leaf->map_start, &leaf->map_len,
- KM_USER1);
- }
-
ioff = btrfs_item_offset(leaf, item);
btrfs_set_item_offset(leaf, item, ioff - total_data);
}
- if (leaf->map_token) {
- unmap_extent_buffer(leaf, leaf->map_token, KM_USER1);
- leaf->map_token = NULL;
- }
-
/* shift the items */
memmove_extent_buffer(leaf, btrfs_item_nr_offset(slot + nr),
btrfs_item_nr_offset(slot),
@@ -3608,27 +3449,13 @@ int setup_items_for_insert(struct btrfs_trans_handle *trans,
* item0..itemN ... dataN.offset..dataN.size .. data0.size
*/
/* first correct the data pointers */
- WARN_ON(leaf->map_token);
for (i = slot; i < nritems; i++) {
u32 ioff;
item = btrfs_item_nr(leaf, i);
- if (!leaf->map_token) {
- map_extent_buffer(leaf, (unsigned long)item,
- sizeof(struct btrfs_item),
- &leaf->map_token, &leaf->kaddr,
- &leaf->map_start, &leaf->map_len,
- KM_USER1);
- }
-
ioff = btrfs_item_offset(leaf, item);
btrfs_set_item_offset(leaf, item, ioff - total_data);
}
- if (leaf->map_token) {
- unmap_extent_buffer(leaf, leaf->map_token, KM_USER1);
- leaf->map_token = NULL;
- }
-
/* shift the items */
memmove_extent_buffer(leaf, btrfs_item_nr_offset(slot + nr),
btrfs_item_nr_offset(slot),
@@ -3840,22 +3667,10 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
u32 ioff;
item = btrfs_item_nr(leaf, i);
- if (!leaf->map_token) {
- map_extent_buffer(leaf, (unsigned long)item,
- sizeof(struct btrfs_item),
- &leaf->map_token, &leaf->kaddr,
- &leaf->map_start, &leaf->map_len,
- KM_USER1);
- }
ioff = btrfs_item_offset(leaf, item);
btrfs_set_item_offset(leaf, item, ioff + dsize);
}
- if (leaf->map_token) {
- unmap_extent_buffer(leaf, leaf->map_token, KM_USER1);
- leaf->map_token = NULL;
- }
-
memmove_extent_buffer(leaf, btrfs_item_nr_offset(slot),
btrfs_item_nr_offset(slot + nr),
sizeof(struct btrfs_item) *
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 23:35:55 +0000