[PATCH] cpuset memory spread: slab cache format

[pandora-kernel.git] / fs / block_dev.c

diff --git a/fs/block_dev.c b/fs/block_dev.c
index e0df94c..2d09605 100644 (file)
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -202,7 +202,7 @@ static loff_t block_llseek(struct file *file, loff_t offset, int origin)
        loff_t size;
        loff_t retval;
 
-       down(&bd_inode->i_sem);
+       mutex_lock(&bd_inode->i_mutex);
        size = i_size_read(bd_inode);
 
        switch (origin) {
@@ -219,7 +219,7 @@ static loff_t block_llseek(struct file *file, loff_t offset, int origin)
                }
                retval = offset;
        }
-       up(&bd_inode->i_sem);
+       mutex_unlock(&bd_inode->i_mutex);
        return retval;
 }
        
@@ -265,8 +265,8 @@ static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
            SLAB_CTOR_CONSTRUCTOR)
        {
                memset(bdev, 0, sizeof(*bdev));
-               sema_init(&bdev->bd_sem, 1);
-               sema_init(&bdev->bd_mount_sem, 1);
+               mutex_init(&bdev->bd_mutex);
+               mutex_init(&bdev->bd_mount_mutex);
                INIT_LIST_HEAD(&bdev->bd_inodes);
                INIT_LIST_HEAD(&bdev->bd_list);
                inode_init_once(&ei->vfs_inode);
@@ -319,7 +319,8 @@ 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_PANIC,
+                       0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
+                               SLAB_MEM_SPREAD|SLAB_PANIC),
                        init_once, NULL);
        err = register_filesystem(&bd_type);
        if (err)
@@ -574,7 +575,7 @@ static int do_open(struct block_device *bdev, struct file *file)
        }
        owner = disk->fops->owner;
 
-       down(&bdev->bd_sem);
+       mutex_lock(&bdev->bd_mutex);
        if (!bdev->bd_openers) {
                bdev->bd_disk = disk;
                bdev->bd_contains = bdev;
@@ -605,21 +606,21 @@ static int do_open(struct block_device *bdev, struct file *file)
                        if (ret)
                                goto out_first;
                        bdev->bd_contains = whole;
-                       down(&whole->bd_sem);
+                       mutex_lock(&whole->bd_mutex);
                        whole->bd_part_count++;
                        p = disk->part[part - 1];
                        bdev->bd_inode->i_data.backing_dev_info =
                           whole->bd_inode->i_data.backing_dev_info;
                        if (!(disk->flags & GENHD_FL_UP) || !p || !p->nr_sects) {
                                whole->bd_part_count--;
-                               up(&whole->bd_sem);
+                               mutex_unlock(&whole->bd_mutex);
                                ret = -ENXIO;
                                goto out_first;
                        }
                        kobject_get(&p->kobj);
                        bdev->bd_part = p;
                        bd_set_size(bdev, (loff_t) p->nr_sects << 9);
-                       up(&whole->bd_sem);
+                       mutex_unlock(&whole->bd_mutex);
                }
        } else {
                put_disk(disk);
@@ -633,13 +634,13 @@ static int do_open(struct block_device *bdev, struct file *file)
                        if (bdev->bd_invalidated)
                                rescan_partitions(bdev->bd_disk, bdev);
                } else {
-                       down(&bdev->bd_contains->bd_sem);
+                       mutex_lock(&bdev->bd_contains->bd_mutex);
                        bdev->bd_contains->bd_part_count++;
-                       up(&bdev->bd_contains->bd_sem);
+                       mutex_unlock(&bdev->bd_contains->bd_mutex);
                }
        }
        bdev->bd_openers++;
-       up(&bdev->bd_sem);
+       mutex_unlock(&bdev->bd_mutex);
        unlock_kernel();
        return 0;
 
@@ -652,7 +653,7 @@ out_first:
        put_disk(disk);
        module_put(owner);
 out:
-       up(&bdev->bd_sem);
+       mutex_unlock(&bdev->bd_mutex);
        unlock_kernel();
        if (ret)
                bdput(bdev);
@@ -714,7 +715,7 @@ int blkdev_put(struct block_device *bdev)
        struct inode *bd_inode = bdev->bd_inode;
        struct gendisk *disk = bdev->bd_disk;
 
-       down(&bdev->bd_sem);
+       mutex_lock(&bdev->bd_mutex);
        lock_kernel();
        if (!--bdev->bd_openers) {
                sync_blockdev(bdev);
@@ -724,9 +725,9 @@ int blkdev_put(struct block_device *bdev)
                if (disk->fops->release)
                        ret = disk->fops->release(bd_inode, NULL);
        } else {
-               down(&bdev->bd_contains->bd_sem);
+               mutex_lock(&bdev->bd_contains->bd_mutex);
                bdev->bd_contains->bd_part_count--;
-               up(&bdev->bd_contains->bd_sem);
+               mutex_unlock(&bdev->bd_contains->bd_mutex);
        }
        if (!bdev->bd_openers) {
                struct module *owner = disk->fops->owner;
@@ -746,7 +747,7 @@ int blkdev_put(struct block_device *bdev)
                bdev->bd_contains = NULL;
        }
        unlock_kernel();
-       up(&bdev->bd_sem);
+       mutex_unlock(&bdev->bd_mutex);
        bdput(bdev);
        return ret;
 }