vserver 2.0 rc7

[linux-2.6.git] / drivers / mtd / devices / block2mtd.c

diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index 1cbdfce..cfe6ccf 100644 (file)
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -59,7 +59,7 @@ void cache_readahead(struct address_space *mapping, int index)
 
        end_index = ((isize - 1) >> PAGE_CACHE_SHIFT);
 
-       spin_lock_irq(&mapping->tree_lock);
+       read_lock_irq(&mapping->tree_lock);
        for (i = 0; i < PAGE_READAHEAD; i++) {
                pagei = index + i;
                if (pagei > end_index) {
@@ -71,16 +71,16 @@ void cache_readahead(struct address_space *mapping, int index)
                        break;
                if (page)
                        continue;
-               spin_unlock_irq(&mapping->tree_lock);
+               read_unlock_irq(&mapping->tree_lock);
                page = page_cache_alloc_cold(mapping);
-               spin_lock_irq(&mapping->tree_lock);
+               read_lock_irq(&mapping->tree_lock);
                if (!page)
                        break;
                page->index = pagei;
                list_add(&page->lru, &page_pool);
                ret++;
        }
-       spin_unlock_irq(&mapping->tree_lock);
+       read_unlock_irq(&mapping->tree_lock);
        if (ret)
                read_cache_pages(mapping, &page_pool, filler, NULL);
 }