locks: allow lockd to process blocked locks during grace period

[safe/jmp/linux-2.6] / include / asm-parisc / bitops.h

diff --git a/include/asm-parisc/bitops.h b/include/asm-parisc/bitops.h
index 9005619..7a6ea10 100644 (file)
--- a/include/asm-parisc/bitops.h
+++ b/include/asm-parisc/bitops.h
@@ -1,6 +1,10 @@
 #ifndef _PARISC_BITOPS_H
 #define _PARISC_BITOPS_H
 
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
 #include <linux/compiler.h>
 #include <asm/types.h>         /* for BITS_PER_LONG/SHIFT_PER_LONG */
 #include <asm/byteorder.h>
@@ -60,31 +64,37 @@ static __inline__ void change_bit(int nr, volatile unsigned long * addr)
 static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr)
 {
        unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
-       unsigned long oldbit;
+       unsigned long old;
        unsigned long flags;
+       int set;
 
        addr += (nr >> SHIFT_PER_LONG);
        _atomic_spin_lock_irqsave(addr, flags);
-       oldbit = *addr;
-       *addr = oldbit | mask;
+       old = *addr;
+       set = (old & mask) ? 1 : 0;
+       if (!set)
+               *addr = old | mask;
        _atomic_spin_unlock_irqrestore(addr, flags);
 
-       return (oldbit & mask) ? 1 : 0;
+       return set;
 }
 
 static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr)
 {
        unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr);
-       unsigned long oldbit;
+       unsigned long old;
        unsigned long flags;
+       int set;
 
        addr += (nr >> SHIFT_PER_LONG);
        _atomic_spin_lock_irqsave(addr, flags);
-       oldbit = *addr;
-       *addr = oldbit & ~mask;
+       old = *addr;
+       set = (old & mask) ? 1 : 0;
+       if (set)
+               *addr = old & ~mask;
        _atomic_spin_unlock_irqrestore(addr, flags);
 
-       return (oldbit & mask) ? 1 : 0;
+       return set;
 }
 
 static __inline__ int test_and_change_bit(int nr, volatile unsigned long * addr)
@@ -130,7 +140,7 @@ static __inline__ unsigned long __ffs(unsigned long x)
        unsigned long ret;
 
        __asm__(
-#ifdef __LP64__
+#ifdef CONFIG_64BIT
                " ldi       63,%1\n"
                " extrd,u,*<>  %0,63,32,%%r0\n"
                " extrd,u,*TR  %0,31,32,%0\n"   /* move top 32-bits down */
@@ -200,8 +210,10 @@ static __inline__ int fls(int x)
        return ret;
 }
 
+#include <asm-generic/bitops/__fls.h>
 #include <asm-generic/bitops/fls64.h>
 #include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/lock.h>
 #include <asm-generic/bitops/sched.h>
 
 #endif /* __KERNEL__ */