driver core: add devname module aliases to allow module on-demand auto-loading

[safe/jmp/linux-2.6] / fs / buffer.c

diff --git a/fs/buffer.c b/fs/buffer.c
index 1d920ba..e8aa708 100644 (file)
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -275,6 +275,7 @@ void invalidate_bdev(struct block_device *bdev)
                return;
 
        invalidate_bh_lrus();
+       lru_add_drain_all();    /* make sure all lru add caches are flushed */
        invalidate_mapping_pages(mapping, 0, -1);
 }
 EXPORT_SYMBOL(invalidate_bdev);
@@ -560,26 +561,17 @@ repeat:
        return err;
 }
 
-static void do_thaw_all(struct work_struct *work)
+static void do_thaw_one(struct super_block *sb, void *unused)
 {
-       struct super_block *sb;
        char b[BDEVNAME_SIZE];
+       while (sb->s_bdev && !thaw_bdev(sb->s_bdev, sb))
+               printk(KERN_WARNING "Emergency Thaw on %s\n",
+                      bdevname(sb->s_bdev, b));
+}
 
-       spin_lock(&sb_lock);
-restart:
-       list_for_each_entry(sb, &super_blocks, s_list) {
-               sb->s_count++;
-               spin_unlock(&sb_lock);
-               down_read(&sb->s_umount);
-               while (sb->s_bdev && !thaw_bdev(sb->s_bdev, sb))
-                       printk(KERN_WARNING "Emergency Thaw on %s\n",
-                              bdevname(sb->s_bdev, b));
-               up_read(&sb->s_umount);
-               spin_lock(&sb_lock);
-               if (__put_super_and_need_restart(sb))
-                       goto restart;
-       }
-       spin_unlock(&sb_lock);
+static void do_thaw_all(struct work_struct *work)
+{
+       iterate_supers(do_thaw_one, NULL);
        kfree(work);
        printk(KERN_WARNING "Emergency Thaw complete\n");
 }
@@ -3265,7 +3257,7 @@ static void recalc_bh_state(void)
        
 struct buffer_head *alloc_buffer_head(gfp_t gfp_flags)
 {
-       struct buffer_head *ret = kmem_cache_alloc(bh_cachep, gfp_flags);
+       struct buffer_head *ret = kmem_cache_zalloc(bh_cachep, gfp_flags);
        if (ret) {
                INIT_LIST_HEAD(&ret->b_assoc_buffers);
                get_cpu_var(bh_accounting).nr++;
@@ -3352,15 +3344,6 @@ int bh_submit_read(struct buffer_head *bh)
 }
 EXPORT_SYMBOL(bh_submit_read);
 
-static void
-init_buffer_head(void *data)
-{
-       struct buffer_head *bh = data;
-
-       memset(bh, 0, sizeof(*bh));
-       INIT_LIST_HEAD(&bh->b_assoc_buffers);
-}
-
 void __init buffer_init(void)
 {
        int nrpages;
@@ -3369,7 +3352,7 @@ void __init buffer_init(void)
                        sizeof(struct buffer_head), 0,
                                (SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|
                                SLAB_MEM_SPREAD),
-                               init_buffer_head);
+                               NULL);
 
        /*
         * Limit the bh occupancy to 10% of ZONE_NORMAL