Check in released NDK version r4.

[android-x86/prebuilt.git] / ndk / android-ndk-r4 / darwin / platforms / android-8 / arch-x86 / usr / include / linux / blockgroup_lock.h

diff --git a/ndk/android-ndk-r4/darwin/platforms/android-8/arch-x86/usr/include/linux/blockgroup_lock.h b/ndk/android-ndk-r4/darwin/platforms/android-8/arch-x86/usr/include/linux/blockgroup_lock.h
new file mode 100644 (file)
index 0000000..c814020
--- /dev/null
+++ b/ndk/android-ndk-r4/darwin/platforms/android-8/arch-x86/usr/include/linux/blockgroup_lock.h
@@ -0,0 +1,29 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _LINUX_BLOCKGROUP_LOCK_H
+#define _LINUX_BLOCKGROUP_LOCK_H
+
+#include <linux/spinlock.h>
+#include <linux/cache.h>
+
+#define NR_BG_LOCKS 1
+
+struct bgl_lock {
+ spinlock_t lock;
+} ____cacheline_aligned_in_smp;
+
+struct blockgroup_lock {
+ struct bgl_lock locks[NR_BG_LOCKS];
+};
+
+#define sb_bgl_lock(sb, block_group)   (&(sb)->s_blockgroup_lock.locks[(block_group) & (NR_BG_LOCKS-1)].lock)
+#endif