nfsd: move fsid_type choice out of fh_compose

[safe/jmp/linux-2.6] / lib / bitmap.c

diff --git a/lib/bitmap.c b/lib/bitmap.c
index c4cb48f..35a1f7f 100644 (file)
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -316,22 +316,6 @@ int bitmap_scnprintf(char *buf, unsigned int buflen,
 EXPORT_SYMBOL(bitmap_scnprintf);
 
 /**
- * bitmap_scnprintf_len - return buffer length needed to convert
- * bitmap to an ASCII hex string.
- * @len: number of bits to be converted
- */
-int bitmap_scnprintf_len(unsigned int len)
-{
-       /* we need 9 chars per word for 32 bit words (8 hexdigits + sep/null) */
-       int bitslen = ALIGN(len, CHUNKSZ);
-       int wordlen = CHUNKSZ / 4;
-       int buflen = (bitslen / wordlen) * (wordlen + 1) * sizeof(char);
-
-       return buflen;
-}
-EXPORT_SYMBOL(bitmap_scnprintf_len);
-
-/**
  * __bitmap_parse - convert an ASCII hex string into a bitmap.
  * @buf: pointer to buffer containing string.
  * @buflen: buffer size in bytes.  If string is smaller than this
@@ -964,15 +948,15 @@ done:
  */
 int bitmap_find_free_region(unsigned long *bitmap, int bits, int order)
 {
-       int pos;                /* scans bitmap by regions of size order */
+       int pos, end;           /* scans bitmap by regions of size order */
 
-       for (pos = 0; pos < bits; pos += (1 << order))
-               if (__reg_op(bitmap, pos, order, REG_OP_ISFREE))
-                       break;
-       if (pos == bits)
-               return -ENOMEM;
-       __reg_op(bitmap, pos, order, REG_OP_ALLOC);
-       return pos;
+       for (pos = 0 ; (end = pos + (1 << order)) <= bits; pos = end) {
+               if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE))
+                       continue;
+               __reg_op(bitmap, pos, order, REG_OP_ALLOC);
+               return pos;
+       }
+       return -ENOMEM;
 }
 EXPORT_SYMBOL(bitmap_find_free_region);
 
@@ -1012,3 +996,25 @@ int bitmap_allocate_region(unsigned long *bitmap, int pos, int order)
        return 0;
 }
 EXPORT_SYMBOL(bitmap_allocate_region);
+
+/**
+ * bitmap_copy_le - copy a bitmap, putting the bits into little-endian order.
+ * @dst:   destination buffer
+ * @src:   bitmap to copy
+ * @nbits: number of bits in the bitmap
+ *
+ * Require nbits % BITS_PER_LONG == 0.
+ */
+void bitmap_copy_le(void *dst, const unsigned long *src, int nbits)
+{
+       unsigned long *d = dst;
+       int i;
+
+       for (i = 0; i < nbits/BITS_PER_LONG; i++) {
+               if (BITS_PER_LONG == 64)
+                       d[i] = cpu_to_le64(src[i]);
+               else
+                       d[i] = cpu_to_le32(src[i]);
+       }
+}
+EXPORT_SYMBOL(bitmap_copy_le);