From: Andi Kleen Date: Fri, 29 Oct 2010 19:14:37 +0000 (-0400) Subject: Btrfs: cleanup warnings from gcc 4.6 (nonbugs) X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=559af821;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git 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 Cc: Chris Mason Signed-off-by: Andrew Morton Signed-off-by: Chris Mason --- diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 396039b3a8a2..7845d1f7d1d9 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -163,7 +163,6 @@ fail: */ static void end_compressed_bio_read(struct bio *bio, int err) { - struct extent_io_tree *tree; struct compressed_bio *cb = bio->bi_private; struct inode *inode; struct page *page; @@ -187,7 +186,6 @@ static void end_compressed_bio_read(struct bio *bio, int err) /* ok, we're the last bio for this extent, lets start * the decompression. */ - tree = &BTRFS_I(inode)->io_tree; ret = btrfs_zlib_decompress_biovec(cb->compressed_pages, cb->start, cb->orig_bio->bi_io_vec, diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 6921231e0efb..9ac171599258 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -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); diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 77e5dabfd45a..e163424c7fce 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -338,7 +338,6 @@ static int csum_dirty_buffer(struct btrfs_root *root, struct page *page) struct extent_io_tree *tree; u64 start = (u64)page->index << PAGE_CACHE_SHIFT; u64 found_start; - int found_level; unsigned long len; struct extent_buffer *eb; int ret; @@ -369,8 +368,6 @@ static int csum_dirty_buffer(struct btrfs_root *root, struct page *page) WARN_ON(1); goto err; } - found_level = btrfs_header_level(eb); - csum_tree_block(root, eb, 0); err: free_extent_buffer(eb); @@ -543,11 +540,9 @@ int btrfs_congested_async(struct btrfs_fs_info *info, int iodone) static void run_one_async_start(struct btrfs_work *work) { - struct btrfs_fs_info *fs_info; struct async_submit_bio *async; async = container_of(work, struct async_submit_bio, work); - fs_info = BTRFS_I(async->inode)->root->fs_info; async->submit_bio_start(async->inode, async->rw, async->bio, async->mirror_num, async->bio_flags, async->bio_offset); @@ -860,12 +855,8 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize, u64 parent_transid) { struct extent_buffer *buf = NULL; - struct inode *btree_inode = root->fs_info->btree_inode; - struct extent_io_tree *io_tree; int ret; - io_tree = &BTRFS_I(btree_inode)->io_tree; - buf = btrfs_find_create_tree_block(root, bytenr, blocksize); if (!buf) return NULL; @@ -1387,7 +1378,6 @@ static int bio_ready_for_csum(struct bio *bio) u64 start = 0; struct page *page; struct extent_io_tree *io_tree = NULL; - struct btrfs_fs_info *info = NULL; struct bio_vec *bvec; int i; int ret; @@ -1406,7 +1396,6 @@ static int bio_ready_for_csum(struct bio *bio) buf_len = page->private >> 2; start = page_offset(page) + bvec->bv_offset; io_tree = &BTRFS_I(page->mapping->host)->io_tree; - info = BTRFS_I(page->mapping->host)->root->fs_info; } /* are we fully contained in this bio? */ if (buf_len <= length) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 59c8daaacf0c..df754108b952 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -5719,7 +5719,6 @@ static noinline void reada_walk_down(struct btrfs_trans_handle *trans, u64 generation; u64 refs; u64 flags; - u64 last = 0; u32 nritems; u32 blocksize; struct btrfs_key key; @@ -5787,7 +5786,6 @@ reada: generation); if (ret) break; - last = bytenr + blocksize; nread++; } wc->reada_slot = slot; diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 7dc31c39ca59..3b7eaee0f912 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1857,10 +1857,8 @@ static int submit_one_bio(int rw, struct bio *bio, int mirror_num, struct page *page = bvec->bv_page; struct extent_io_tree *tree = bio->bi_private; u64 start; - u64 end; start = ((u64)page->index << PAGE_CACHE_SHIFT) + bvec->bv_offset; - end = start + bvec->bv_len - 1; bio->bi_private = NULL; @@ -2160,7 +2158,6 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc, u64 last_byte = i_size_read(inode); u64 block_start; u64 iosize; - u64 unlock_start; sector_t sector; struct extent_state *cached_state = NULL; struct extent_map *em; @@ -2285,7 +2282,6 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc, if (tree->ops && tree->ops->writepage_end_io_hook) tree->ops->writepage_end_io_hook(page, start, page_end, NULL, 1); - unlock_start = page_end + 1; goto done; } @@ -2296,7 +2292,6 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc, if (tree->ops && tree->ops->writepage_end_io_hook) tree->ops->writepage_end_io_hook(page, cur, page_end, NULL, 1); - unlock_start = page_end + 1; break; } em = epd->get_extent(inode, page, pg_offset, cur, @@ -2343,7 +2338,6 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc, cur += iosize; pg_offset += iosize; - unlock_start = cur; continue; } /* leave this out until we have a page_mkwrite call */ @@ -2429,7 +2423,6 @@ static int extent_write_cache_pages(struct extent_io_tree *tree, pgoff_t index; pgoff_t end; /* Inclusive */ int scanned = 0; - int range_whole = 0; pagevec_init(&pvec, 0); if (wbc->range_cyclic) { @@ -2438,8 +2431,6 @@ static int extent_write_cache_pages(struct extent_io_tree *tree, } else { index = wbc->range_start >> PAGE_CACHE_SHIFT; end = wbc->range_end >> PAGE_CACHE_SHIFT; - if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) - range_whole = 1; scanned = 1; } retry: diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 0aa24717cd58..609f3bbbd1ed 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -319,8 +319,6 @@ static noinline int compress_file_range(struct inode *inode, struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_trans_handle *trans; u64 num_bytes; - u64 orig_start; - u64 disk_num_bytes; u64 blocksize = root->sectorsize; u64 actual_end; u64 isize = i_size_read(inode); @@ -335,8 +333,6 @@ static noinline int compress_file_range(struct inode *inode, int i; int will_compress; - orig_start = start; - actual_end = min_t(u64, isize, end + 1); again: will_compress = 0; @@ -371,7 +367,6 @@ again: total_compressed = min(total_compressed, max_uncompressed); num_bytes = (end - start + blocksize) & ~(blocksize - 1); num_bytes = max(blocksize, num_bytes); - disk_num_bytes = num_bytes; total_in = 0; ret = 0; @@ -467,7 +462,6 @@ again: if (total_compressed >= total_in) { will_compress = 0; } else { - disk_num_bytes = total_compressed; num_bytes = total_in; } } @@ -757,8 +751,6 @@ static noinline int cow_file_range(struct inode *inode, u64 disk_num_bytes; u64 cur_alloc_size; u64 blocksize = root->sectorsize; - u64 actual_end; - u64 isize = i_size_read(inode); struct btrfs_key ins; struct extent_map *em; struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree; @@ -770,8 +762,6 @@ static noinline int cow_file_range(struct inode *inode, btrfs_set_trans_block_group(trans, inode); trans->block_rsv = &root->fs_info->delalloc_block_rsv; - actual_end = min_t(u64, isize, end + 1); - num_bytes = (end - start + blocksize) & ~(blocksize - 1); num_bytes = max(blocksize, num_bytes); disk_num_bytes = num_bytes; @@ -2274,7 +2264,6 @@ void btrfs_orphan_cleanup(struct btrfs_root *root) { struct btrfs_path *path; struct extent_buffer *leaf; - struct btrfs_item *item; struct btrfs_key key, found_key; struct btrfs_trans_handle *trans; struct inode *inode; @@ -2312,7 +2301,6 @@ void btrfs_orphan_cleanup(struct btrfs_root *root) /* pull out the item */ leaf = path->nodes[0]; - item = btrfs_item_nr(leaf, path->slots[0]); btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]); /* make sure the item matches what we want */ @@ -5701,7 +5689,6 @@ static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode, struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_dio_private *dip; struct bio_vec *bvec = bio->bi_io_vec; - u64 start; int skip_sum; int write = rw & REQ_WRITE; int ret = 0; @@ -5727,7 +5714,6 @@ static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode, dip->inode = inode; dip->logical_offset = file_offset; - start = dip->logical_offset; dip->bytes = 0; do { dip->bytes += bvec->bv_len; diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 8079ebfeaf50..60f662c4778b 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -708,7 +708,6 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root *root, char *sizestr; char *devstr = NULL; int ret = 0; - int namelen; int mod = 0; if (root->fs_info->sb->s_flags & MS_RDONLY) @@ -722,7 +721,6 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root *root, return PTR_ERR(vol_args); vol_args->name[BTRFS_PATH_NAME_MAX] = '\0'; - namelen = strlen(vol_args->name); mutex_lock(&root->fs_info->volume_mutex); sizestr = vol_args->name; diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index e56c72bc5add..f4621f6deca1 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -526,7 +526,6 @@ int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len) { u64 end; u64 orig_end; - u64 wait_end; struct btrfs_ordered_extent *ordered; int found; @@ -537,7 +536,6 @@ int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len) if (orig_end > INT_LIMIT(loff_t)) orig_end = INT_LIMIT(loff_t); } - wait_end = orig_end; again: /* start IO across the range first to instantiate any delalloc * extents diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c index 2d958be761c8..6a1086e83ffc 100644 --- a/fs/btrfs/root-tree.c +++ b/fs/btrfs/root-tree.c @@ -181,7 +181,6 @@ int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid) { struct btrfs_root *dead_root; - struct btrfs_item *item; struct btrfs_root_item *ri; struct btrfs_key key; struct btrfs_key found_key; @@ -214,7 +213,6 @@ again: nritems = btrfs_header_nritems(leaf); slot = path->slots[0]; } - item = btrfs_item_nr(leaf, slot); btrfs_item_key_to_cpu(leaf, &key, slot); if (btrfs_key_type(&key) != BTRFS_ROOT_ITEM_KEY) goto next; diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index d7fb2733d028..0002e6d1a16f 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -61,6 +61,8 @@ static void btrfs_put_super(struct super_block *sb) ret = close_ctree(root); sb->s_fs_info = NULL; + + (void)ret; /* FIXME: need to fix VFS to return error? */ } enum { @@ -445,7 +447,6 @@ static int btrfs_fill_super(struct super_block *sb, { struct inode *inode; struct dentry *root_dentry; - struct btrfs_super_block *disk_super; struct btrfs_root *tree_root; struct btrfs_key key; int err; @@ -467,7 +468,6 @@ static int btrfs_fill_super(struct super_block *sb, return PTR_ERR(tree_root); } sb->s_fs_info = tree_root; - disk_super = &tree_root->fs_info->super_copy; key.objectid = BTRFS_FIRST_FREE_OBJECTID; key.type = BTRFS_INODE_ITEM_KEY; @@ -580,7 +580,6 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags, char *subvol_name = NULL; u64 subvol_objectid = 0; int error = 0; - int found = 0; if (!(flags & MS_RDONLY)) mode |= FMODE_WRITE; @@ -616,7 +615,6 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags, goto error_close_devices; } - found = 1; btrfs_close_devices(fs_devices); } else { char b[BDEVNAME_SIZE]; diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c index f7ac8e013ed7..992ab425599d 100644 --- a/fs/btrfs/tree-defrag.c +++ b/fs/btrfs/tree-defrag.c @@ -36,7 +36,6 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, int ret = 0; int wret; int level; - int orig_level; int is_extent = 0; int next_key_ret = 0; u64 last_ret = 0; @@ -64,7 +63,6 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, return -ENOMEM; level = btrfs_header_level(root->node); - orig_level = level; if (level == 0) goto out; 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; diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 28681e729b1d..91851b555e2e 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1901,7 +1901,6 @@ int btrfs_balance(struct btrfs_root *dev_root) u64 size_to_free; struct btrfs_path *path; struct btrfs_key key; - struct btrfs_chunk *chunk; struct btrfs_root *chunk_root = dev_root->fs_info->chunk_root; struct btrfs_trans_handle *trans; struct btrfs_key found_key; @@ -1965,9 +1964,6 @@ int btrfs_balance(struct btrfs_root *dev_root) if (found_key.objectid != key.objectid) break; - chunk = btrfs_item_ptr(path->nodes[0], - path->slots[0], - struct btrfs_chunk); /* chunk zero is special */ if (found_key.offset == 0) break; diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c index 88ecbb215878..698fdd2c739c 100644 --- a/fs/btrfs/xattr.c +++ b/fs/btrfs/xattr.c @@ -178,7 +178,6 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size) struct inode *inode = dentry->d_inode; struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_path *path; - struct btrfs_item *item; struct extent_buffer *leaf; struct btrfs_dir_item *di; int ret = 0, slot, advance; @@ -234,7 +233,6 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size) } advance = 1; - item = btrfs_item_nr(leaf, slot); btrfs_item_key_to_cpu(leaf, &found_key, slot); /* check to make sure this item is what we want */ diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c index 3e2b90eaa239..b9cd5445f71c 100644 --- a/fs/btrfs/zlib.c +++ b/fs/btrfs/zlib.c @@ -199,8 +199,6 @@ int btrfs_zlib_compress_pages(struct address_space *mapping, int nr_pages = 0; struct page *in_page = NULL; struct page *out_page = NULL; - int out_written = 0; - int in_read = 0; unsigned long bytes_left; *out_pages = 0; @@ -233,9 +231,6 @@ int btrfs_zlib_compress_pages(struct address_space *mapping, workspace->def_strm.avail_out = PAGE_CACHE_SIZE; workspace->def_strm.avail_in = min(len, PAGE_CACHE_SIZE); - out_written = 0; - in_read = 0; - while (workspace->def_strm.total_in < len) { ret = zlib_deflate(&workspace->def_strm, Z_SYNC_FLUSH); if (ret != Z_OK) {