btrfs-progs: remove unused bit-radix.[ch] files

fd53de4d Drop bit-radix.[ch] files
removed the files from the Makefile, but not the files themselves.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>

diff --git a/bit-radix.c b/bit-radix.c
deleted file mode 100644 (file)
index 57f6f3c..0000000
--- a/bit-radix.c
+++ /dev/null
@@ -1,211 +0,0 @@
-/*
- * Copyright (C) 2007 Oracle.  All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License v2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
- */
-
-#include "kerncompat.h"
-#include "radix-tree.h"
-
-#define BIT_ARRAY_BYTES 256
-#define BIT_RADIX_BITS_PER_ARRAY ((BIT_ARRAY_BYTES - sizeof(unsigned long)) * 8)
-
-int set_radix_bit(struct radix_tree_root *radix, unsigned long bit)
-{
-       unsigned long *bits;
-       unsigned long slot;
-       int bit_slot;
-       int ret;
-
-       slot = bit / BIT_RADIX_BITS_PER_ARRAY;
-       bit_slot = bit % BIT_RADIX_BITS_PER_ARRAY;
-
-       bits = radix_tree_lookup(radix, slot);
-       if (!bits) {
-               bits = malloc(BIT_ARRAY_BYTES);
-               if (!bits)
-                       return -ENOMEM;
-               memset(bits + 1, 0, BIT_ARRAY_BYTES - sizeof(unsigned long));
-               bits[0] = slot;
-               radix_tree_preload(GFP_NOFS);
-               ret = radix_tree_insert(radix, slot, bits);
-               radix_tree_preload_end();
-               if (ret)
-                       return ret;
-       }
-       __set_bit(bit_slot, bits + 1);
-       return 0;
-}
-
-int test_radix_bit(struct radix_tree_root *radix, unsigned long bit)
-{
-       unsigned long *bits;
-       unsigned long slot;
-       int bit_slot;
-
-       slot = bit / BIT_RADIX_BITS_PER_ARRAY;
-       bit_slot = bit % BIT_RADIX_BITS_PER_ARRAY;
-
-       bits = radix_tree_lookup(radix, slot);
-       if (!bits)
-               return 0;
-       return test_bit(bit_slot, bits + 1);
-}
-
-int clear_radix_bit(struct radix_tree_root *radix, unsigned long bit)
-{
-       unsigned long *bits;
-       unsigned long slot;
-       int bit_slot;
-       int i;
-       int empty = 1;
-       slot = bit / BIT_RADIX_BITS_PER_ARRAY;
-       bit_slot = bit % BIT_RADIX_BITS_PER_ARRAY;
-
-       bits = radix_tree_lookup(radix, slot);
-       if (!bits)
-               return 0;
-       __clear_bit(bit_slot, bits + 1);
-       for (i = 1; i < BIT_ARRAY_BYTES / sizeof(unsigned long); i++) {
-               if (bits[i]) {
-                       empty = 0;
-                       break;
-               }
-       }
-       if (empty) {
-               bits = radix_tree_delete(radix, slot);
-               BUG_ON(!bits);
-               free(bits);
-       }
-       return 0;
-}
- 
-#define BITOP_WORD(nr)         ((nr) / BITS_PER_LONG)
-
-/**
- * __ffs - find first bit in word.
- * @word: The word to search
- *
- * Undefined if no bit exists, so code should check against 0 first.
- */
-static unsigned long __ffs(unsigned long word)
-{
-       int num = 0;
-
-       if (sizeof(long) == 8 && (word & 0xffffffff) == 0) {
-               num += 32;
-               word >>= sizeof(long) * 4;
-       }
-       if ((word & 0xffff) == 0) {
-               num += 16;
-               word >>= 16;
-       }
-       if ((word & 0xff) == 0) {
-               num += 8;
-               word >>= 8;
-       }
-       if ((word & 0xf) == 0) {
-               num += 4;
-               word >>= 4;
-       }
-       if ((word & 0x3) == 0) {
-               num += 2;
-               word >>= 2;
-       }
-       if ((word & 0x1) == 0)
-               num += 1;
-       return num;
-}
-
-/**
- * find_next_bit - find the next set bit in a memory region
- * @addr: The address to base the search on
- * @offset: The bitnumber to start searching at
- * @size: The maximum size to search
- */
-unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
-               unsigned long offset)
-{
-       const unsigned long *p = addr + BITOP_WORD(offset);
-       unsigned long result = offset & ~(BITS_PER_LONG-1);
-       unsigned long tmp;
-
-       if (offset >= size)
-               return size;
-       size -= result;
-       offset %= BITS_PER_LONG;
-       if (offset) {
-               tmp = *(p++);
-               tmp &= (~0UL << offset);
-               if (size < BITS_PER_LONG)
-                       goto found_first;
-               if (tmp)
-                       goto found_middle;
-               size -= BITS_PER_LONG;
-               result += BITS_PER_LONG;
-       }
-       while (size & ~(BITS_PER_LONG-1)) {
-               if ((tmp = *(p++)))
-                       goto found_middle;
-               result += BITS_PER_LONG;
-               size -= BITS_PER_LONG;
-       }
-       if (!size)
-               return result;
-       tmp = *p;
-
-found_first:
-       tmp &= (~0UL >> (BITS_PER_LONG - size));
-       if (tmp == 0UL)         /* Are any bits set? */
-               return result + size;   /* Nope. */
-found_middle:
-       return result + __ffs(tmp);
-}
-
-int find_first_radix_bit(struct radix_tree_root *radix, unsigned long *retbits,
-                        unsigned long start, int nr)
-{
-       unsigned long *bits;
-       unsigned long *gang[4];
-       int found;
-       int ret;
-       int i;
-       int total_found = 0;
-       unsigned long slot;
-
-       slot = start / BIT_RADIX_BITS_PER_ARRAY;
-       ret = radix_tree_gang_lookup(radix, (void *)gang, slot,
-                                    ARRAY_SIZE(gang));
-       found = start % BIT_RADIX_BITS_PER_ARRAY;
-       for (i = 0; i < ret && nr > 0; i++) {
-               bits = gang[i];
-               while(nr > 0) {
-                       found = find_next_bit(bits + 1,
-                                             BIT_RADIX_BITS_PER_ARRAY,
-                                             found);
-                       if (found < BIT_RADIX_BITS_PER_ARRAY) {
-                               *retbits = bits[0] *
-                                       BIT_RADIX_BITS_PER_ARRAY + found;
-                               retbits++;
-                               nr--;
-                               total_found++;
-                               found++;
-                       } else
-                               break;
-               }
-               found = 0;
-       }
-       return total_found;
-}

diff --git a/bit-radix.h b/bit-radix.h
deleted file mode 100644 (file)
index af14e80..0000000
--- a/bit-radix.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2007 Oracle.  All rights reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public
- * License v2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 021110-1307, USA.
- */
-
-#ifndef __BIT_RADIX__
-#define __BIT_RADIX__
-#include "radix-tree.h"
-
-int set_radix_bit(struct radix_tree_root *radix, unsigned long bit);
-int test_radix_bit(struct radix_tree_root *radix, unsigned long bit);
-int clear_radix_bit(struct radix_tree_root *radix, unsigned long bit);
-int find_first_radix_bit(struct radix_tree_root *radix, unsigned long *retbits,
-                        unsigned long start, int nr);
-
-static inline void init_bit_radix(struct radix_tree_root *radix)
-{
-       INIT_RADIX_TREE(radix, GFP_NOFS);
-}
-#endif