Btrfs: cleanup warnings from gcc 4.6 (nonbugs)

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>

1 files changed, 0 insertions, 15 deletions

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 224fb5b3daad..a29f19384a27 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -786,7 +786,6 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
 {
         struct inode *dir;
         int ret;
-        struct btrfs_key location;
         struct btrfs_inode_ref *ref;
         struct btrfs_dir_item *di;
         struct inode *inode;
@@ -795,10 +794,6 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
         unsigned long ref_ptr;
         unsigned long ref_end;
 
-        location.objectid = key->objectid;
-        location.type = BTRFS_INODE_ITEM_KEY;
-        location.offset = 0;
-
         /*
          * it is possible that we didn't log all the parent directories
          * for a given inode.  If we don't find the dir, just don't
@@ -1583,7 +1578,6 @@ static int replay_one_buffer(struct btrfs_root *log, struct extent_buffer *eb,
         struct btrfs_path *path;
         struct btrfs_root *root = wc->replay_dest;
         struct btrfs_key key;
-        u32 item_size;
         int level;
         int i;
         int ret;
@@ -1601,7 +1595,6 @@ static int replay_one_buffer(struct btrfs_root *log, struct extent_buffer *eb,
         nritems = btrfs_header_nritems(eb);
         for (i = 0; i < nritems; i++) {
                 btrfs_item_key_to_cpu(eb, &key, i);
-                item_size = btrfs_item_size_nr(eb, i);
 
                 /* inode keys are done during the first stage */
                 if (key.type == BTRFS_INODE_ITEM_KEY &&
@@ -1668,7 +1661,6 @@ static noinline int walk_down_log_tree(struct btrfs_trans_handle *trans,
                                    struct walk_control *wc)
 {
         u64 root_owner;
-        u64 root_gen;
         u64 bytenr;
         u64 ptr_gen;
         struct extent_buffer *next;
@@ -1698,7 +1690,6 @@ static noinline int walk_down_log_tree(struct btrfs_trans_handle *trans,
 
                 parent = path->nodes[*level];
                 root_owner = btrfs_header_owner(parent);
-                root_gen = btrfs_header_generation(parent);
 
                 next = btrfs_find_create_tree_block(root, bytenr, blocksize);
 
@@ -1749,7 +1740,6 @@ static noinline int walk_up_log_tree(struct btrfs_trans_handle *trans,
                                  struct walk_control *wc)
 {
         u64 root_owner;
-        u64 root_gen;
         int i;
         int slot;
         int ret;
@@ -1757,8 +1747,6 @@ static noinline int walk_up_log_tree(struct btrfs_trans_handle *trans,
         for (i = *level; i < BTRFS_MAX_LEVEL - 1 && path->nodes[i]; i++) {
                 slot = path->slots[i];
                 if (slot + 1 < btrfs_header_nritems(path->nodes[i])) {
-                        struct extent_buffer *node;
-                        node = path->nodes[i];
                         path->slots[i]++;
                         *level = i;
                         WARN_ON(*level == 0);
@@ -1771,7 +1759,6 @@ static noinline int walk_up_log_tree(struct btrfs_trans_handle *trans,
                                 parent = path->nodes[*level + 1];
 
                         root_owner = btrfs_header_owner(parent);
-                        root_gen = btrfs_header_generation(parent);
                         wc->process_func(root, path->nodes[*level], wc,
                                  btrfs_header_generation(path->nodes[*level]));
                         if (wc->free) {
@@ -2729,7 +2716,6 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans,
         struct btrfs_key max_key;
         struct btrfs_root *log = root->log_root;
         struct extent_buffer *src = NULL;
-        u32 size;
         int err = 0;
         int ret;
         int nritems;
@@ -2793,7 +2779,6 @@ again:
                         break;
 
                 src = path->nodes[0];
-                size = btrfs_item_size_nr(src, path->slots[0]);
                 if (ins_nr && ins_start_slot + ins_nr == path->slots[0]) {
                         ins_nr++;
                         goto next_slot;