vfs: introduce noop_llseek()

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

diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index 9cd4e4a..83c4f60 100644 (file)
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -12,7 +12,7 @@
 /* A global variable is a bit ugly, but it keeps the code simple */
 int sysctl_drop_caches;
 
-static void drop_pagecache_sb(struct super_block *sb)
+static void drop_pagecache_sb(struct super_block *sb, void *unused)
 {
        struct inode *inode, *toput_inode = NULL;
 
@@ -33,28 +33,6 @@ static void drop_pagecache_sb(struct super_block *sb)
        iput(toput_inode);
 }
 
-static void drop_pagecache(void)
-{
-       struct super_block *sb;
-
-       spin_lock(&sb_lock);
-restart:
-       list_for_each_entry(sb, &super_blocks, s_list) {
-               if (list_empty(&sb->s_instances))
-                       continue;
-               sb->s_count++;
-               spin_unlock(&sb_lock);
-               down_read(&sb->s_umount);
-               if (sb->s_root)
-                       drop_pagecache_sb(sb);
-               up_read(&sb->s_umount);
-               spin_lock(&sb_lock);
-               if (__put_super_and_need_restart(sb))
-                       goto restart;
-       }
-       spin_unlock(&sb_lock);
-}
-
 static void drop_slab(void)
 {
        int nr_objects;
@@ -70,7 +48,7 @@ int drop_caches_sysctl_handler(ctl_table *table, int write,
        proc_dointvec_minmax(table, write, buffer, length, ppos);
        if (write) {
                if (sysctl_drop_caches & 1)
-                       drop_pagecache();
+                       iterate_supers(drop_pagecache_sb, NULL);
                if (sysctl_drop_caches & 2)
                        drop_slab();
        }