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| author | Andi Kleen <ak@suse.de> | 2008-04-28 02:12:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:20 -0700 |
| commit | 7edf85aa3c00df1e86e82f649c41efa0dd8a7218 (patch) | |
| tree | 9f6ee8e78076a55031642a1660ce9e1760ad79fb | |
| parent | b5ee5befa75e33e55d34584ad10286c5005cb1de (diff) | |
| download | blackbird-op-linux-7edf85aa3c00df1e86e82f649c41efa0dd8a7218.tar.gz blackbird-op-linux-7edf85aa3c00df1e86e82f649c41efa0dd8a7218.zip | |
mm: save some bytes in mm_struct by filling holes on 64bit
Save some bytes in mm_struct by filling holes
Putting int values together for better packing on 64bit shrinks sizeof(struct
mm_struct) from 776 bytes to 764 bytes.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/mm_types.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index af190ceab971..29adaa781cb6 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -172,6 +172,7 @@ struct mm_struct { atomic_t mm_users; /* How many users with user space? */ atomic_t mm_count; /* How many references to "struct mm_struct" (users count as 1) */ int map_count; /* number of VMAs */ + int core_waiters; struct rw_semaphore mmap_sem; spinlock_t page_table_lock; /* Protects page tables and some counters */ @@ -216,11 +217,10 @@ struct mm_struct { unsigned long flags; /* Must use atomic bitops to access the bits */ /* coredumping support */ - int core_waiters; struct completion *core_startup_done, core_done; /* aio bits */ - rwlock_t ioctx_list_lock; + rwlock_t ioctx_list_lock; /* aio lock */ struct kioctx *ioctx_list; #ifdef CONFIG_CGROUP_MEM_RES_CTLR struct mem_cgroup *mem_cgroup; |
