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    Subject[rfc][patch 3/3] use SLAB_ALIGN_SMP
    Use SLAB_SMP_ALIGN in a few places.

    Signed-off-by: Nick Piggin <npiggin@suse.de>
    ---
    Index: linux-2.6/fs/block_dev.c
    ===================================================================
    --- linux-2.6.orig/fs/block_dev.c
    +++ linux-2.6/fs/block_dev.c
    @@ -332,8 +332,8 @@ void __init bdev_cache_init(void)
    {
    int err;
    bdev_cachep = kmem_cache_create("bdev_cache", sizeof(struct bdev_inode),
    - 0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
    - SLAB_MEM_SPREAD|SLAB_PANIC),
    + 0, (SLAB_HWCACHE_ALIGN|SLAB_SMP_ALIGN|
    + SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|SLAB_PANIC),
    init_once);
    err = register_filesystem(&bd_type);
    if (err)
    Index: linux-2.6/kernel/fork.c
    ===================================================================
    --- linux-2.6.orig/kernel/fork.c
    +++ linux-2.6/kernel/fork.c
    @@ -1547,23 +1547,23 @@ void __init proc_caches_init(void)
    {
    sighand_cachep = kmem_cache_create("sighand_cache",
    sizeof(struct sighand_struct), 0,
    - SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_DESTROY_BY_RCU,
    + SLAB_HWCACHE_ALIGN|SLAB_SMP_ALIGN|SLAB_PANIC|SLAB_DESTROY_BY_RCU,
    sighand_ctor);
    signal_cachep = kmem_cache_create("signal_cache",
    sizeof(struct signal_struct), 0,
    - SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
    + SLAB_HWCACHE_ALIGN|SLAB_SMP_ALIGN|SLAB_PANIC, NULL);
    files_cachep = kmem_cache_create("files_cache",
    sizeof(struct files_struct), 0,
    - SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
    + SLAB_HWCACHE_ALIGN|SLAB_SMP_ALIGN|SLAB_PANIC, NULL);
    fs_cachep = kmem_cache_create("fs_cache",
    sizeof(struct fs_struct), 0,
    - SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
    + SLAB_HWCACHE_ALIGN|SLAB_SMP_ALIGN|SLAB_PANIC, NULL);
    vm_area_cachep = kmem_cache_create("vm_area_struct",
    sizeof(struct vm_area_struct), 0,
    SLAB_PANIC, NULL);
    mm_cachep = kmem_cache_create("mm_struct",
    sizeof(struct mm_struct), ARCH_MIN_MMSTRUCT_ALIGN,
    - SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
    + SLAB_HWCACHE_ALIGN|SLAB_SMP_ALIGN|SLAB_PANIC, NULL);
    }

    /*
    Index: linux-2.6/kernel/pid.c
    ===================================================================
    --- linux-2.6.orig/kernel/pid.c
    +++ linux-2.6/kernel/pid.c
    @@ -526,5 +526,5 @@ void __init pidmap_init(void)
    atomic_dec(&init_pid_ns.pidmap[0].nr_free);

    init_pid_ns.pid_cachep = KMEM_CACHE(pid,
    - SLAB_HWCACHE_ALIGN | SLAB_PANIC);
    + SLAB_HWCACHE_ALIGN | SLAB_SMP_ALIGN | SLAB_PANIC);
    }
    Index: linux-2.6/kernel/user.c
    ===================================================================
    --- linux-2.6.orig/kernel/user.c
    +++ linux-2.6/kernel/user.c
    @@ -503,7 +503,7 @@ static int __init uid_cache_init(void)
    int n;

    uid_cachep = kmem_cache_create("uid_cache", sizeof(struct user_struct),
    - 0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
    + 0, SLAB_HWCACHE_ALIGN|SLAB_SMP_ALIGN|SLAB_PANIC, NULL);

    for(n = 0; n < UIDHASH_SZ; ++n)
    INIT_HLIST_HEAD(init_user_ns.uidhash_table + n);

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