| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 1 | /**************************************************************************** |
| 2 | **************************************************************************** |
| 3 | *** |
| 4 | *** This header was automatically generated from a Linux kernel header |
| 5 | *** of the same name, to make information necessary for userspace to |
| 6 | *** call into the kernel available to libc. It contains only constants, |
| 7 | *** structures, and macros generated from the original header, and thus, |
| 8 | *** contains no copyrightable information. |
| 9 | *** |
| 10 | **************************************************************************** |
| 11 | ****************************************************************************/ |
| 12 | #ifndef _LINUX_BLOCKGROUP_LOCK_H |
| 13 | #define _LINUX_BLOCKGROUP_LOCK_H |
| 14 | |
| 15 | #include <linux/spinlock.h> |
| 16 | #include <linux/cache.h> |
| 17 | |
| 18 | #define NR_BG_LOCKS 1 |
| 19 | |
| 20 | struct bgl_lock { |
| 21 | spinlock_t lock; |
| 22 | } ____cacheline_aligned_in_smp; |
| 23 | |
| 24 | struct blockgroup_lock { |
| 25 | struct bgl_lock locks[NR_BG_LOCKS]; |
| 26 | }; |
| 27 | |
| 28 | #define sb_bgl_lock(sb, block_group) (&(sb)->s_blockgroup_lock.locks[(block_group) & (NR_BG_LOCKS-1)].lock) |
| 29 | #endif |