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Btrfs: cleanup warnings from gcc 4.6 (nonbugs)

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These are all the cases where a variable is set, but not read which are
not bugs as far as I can see, but simply leftovers.

Still needs more review.

Found by gcc 4.6's new warnings

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Andi Kleen
2010-10-29 15:14:37 -04:00
committed by Chris Mason
父節點 411fc6bcef
當前提交 559af82114
共有 15 個文件被更改，包括 4 次插入 和 94 次删除
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20
fs/btrfs/ctree.c
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@@ -200,7 +200,6 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
struct extent_buffer **cow_ret, u64 new_root_objectid)
{
struct extent_buffer *cow;
u32 nritems;
int ret = 0;
int level;
struct btrfs_disk_key disk_key;
@@ -210,7 +209,6 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
WARN_ON(root->ref_cows && trans->transid != root->last_trans);
level = btrfs_header_level(buf);
nritems = btrfs_header_nritems(buf);
if (level == 0)
btrfs_item_key(buf, &disk_key, 0);
else
@@ -1008,7 +1006,6 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
int wret;
int pslot;
int orig_slot = path->slots[level];
int err_on_enospc = 0;
u64 orig_ptr;
if (level == 0)
@@ -1071,8 +1068,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
BTRFS_NODEPTRS_PER_BLOCK(root) / 4)
return 0;
if (btrfs_header_nritems(mid) < 2)
err_on_enospc = 1;
btrfs_header_nritems(mid);
left = read_node_slot(root, parent, pslot - 1);
if (left) {
@@ -1103,8 +1099,7 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
wret = push_node_left(trans, root, left, mid, 1);
if (wret < 0)
ret = wret;
if (btrfs_header_nritems(mid) < 2)
err_on_enospc = 1;
btrfs_header_nritems(mid);
}
/*
@@ -1224,14 +1219,12 @@ static noinline int push_nodes_for_insert(struct btrfs_trans_handle *trans,
int wret;
int pslot;
int orig_slot = path->slots[level];
u64 orig_ptr;
if (level == 0)
return 1;
mid = path->nodes[level];
WARN_ON(btrfs_header_generation(mid) != trans->transid);
orig_ptr = btrfs_node_blockptr(mid, orig_slot);
if (level < BTRFS_MAX_LEVEL - 1)
parent = path->nodes[level + 1];
@@ -2567,7 +2560,6 @@ static noinline int __push_leaf_left(struct btrfs_trans_handle *trans,
{
struct btrfs_disk_key disk_key;
struct extent_buffer *right = path->nodes[0];
int slot;
int i;
int push_space = 0;
int push_items = 0;
@@ -2579,8 +2571,6 @@ static noinline int __push_leaf_left(struct btrfs_trans_handle *trans,
u32 this_item_size;
u32 old_left_item_size;
slot = path->slots[1];
if (empty)
nr = min(right_nritems, max_slot);
else
@@ -3349,7 +3339,6 @@ int btrfs_truncate_item(struct btrfs_trans_handle *trans,
{
int ret = 0;
int slot;
int slot_orig;
struct extent_buffer *leaf;
struct btrfs_item *item;
u32 nritems;
@@ -3359,7 +3348,6 @@ int btrfs_truncate_item(struct btrfs_trans_handle *trans,
unsigned int size_diff;
int i;
slot_orig = path->slots[0];
leaf = path->nodes[0];
slot = path->slots[0];
@@ -3464,7 +3452,6 @@ int btrfs_extend_item(struct btrfs_trans_handle *trans,
{
int ret = 0;
int slot;
int slot_orig;
struct extent_buffer *leaf;
struct btrfs_item *item;
u32 nritems;
@@ -3473,7 +3460,6 @@ int btrfs_extend_item(struct btrfs_trans_handle *trans,
unsigned int old_size;
int i;
slot_orig = path->slots[0];
leaf = path->nodes[0];
nritems = btrfs_header_nritems(leaf);
@@ -3806,7 +3792,6 @@ int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
struct btrfs_key *cpu_key, u32 *data_size,
int nr)
{
struct extent_buffer *leaf;
int ret = 0;
int slot;
int i;
@@ -3823,7 +3808,6 @@ int btrfs_insert_empty_items(struct btrfs_trans_handle *trans,
if (ret < 0)
goto out;
leaf = path->nodes[0];
slot = path->slots[0];
BUG_ON(slot < 0);