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Diffstat (limited to 'include/asm-generic/bitops/ext2-atomic.h')
-rw-r--r--include/asm-generic/bitops/ext2-atomic.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-generic/bitops/ext2-atomic.h b/include/asm-generic/bitops/ext2-atomic.h
new file mode 100644
index 000000000..87f0f109d
--- /dev/null
+++ b/include/asm-generic/bitops/ext2-atomic.h
@@ -0,0 +1,26 @@
+#ifndef _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
+#define _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
+
+/*
+ * Spinlock based version of ext2 atomic bitops
+ */
+
+#define ext2_set_bit_atomic(lock, nr, addr) \
+ ({ \
+ int ret; \
+ spin_lock(lock); \
+ ret = __test_and_set_bit_le(nr, addr); \
+ spin_unlock(lock); \
+ ret; \
+ })
+
+#define ext2_clear_bit_atomic(lock, nr, addr) \
+ ({ \
+ int ret; \
+ spin_lock(lock); \
+ ret = __test_and_clear_bit_le(nr, addr); \
+ spin_unlock(lock); \
+ ret; \
+ })
+
+#endif /* _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_ */