[PATCH] cleanup hugelbfs_forget_inode

Reformat hugelbfs_forget_inode and add the missing but harmless
write_inode_now call.  It looks the same as generic_forget_inode now except
for the call to truncate_hugepages instead of truncate_inode_pages.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index ffdad4e..8f94feb 100644 (file)
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -231,25 +231,28 @@ static void hugetlbfs_delete_inode(struct inode *inode)
 
 static void hugetlbfs_forget_inode(struct inode *inode)
 {
-       struct super_block *super_block = inode->i_sb;
-
-       if (hlist_unhashed(&inode->i_hash))
-               goto out_truncate;
-
-       if (!(inode->i_state & (I_DIRTY|I_LOCK))) {
-               list_del(&inode->i_list);
-               list_add(&inode->i_list, &inode_unused);
-       }
-       inodes_stat.nr_unused++;
-       if (!super_block || (super_block->s_flags & MS_ACTIVE)) {
+       struct super_block *sb = inode->i_sb;
+
+       if (!hlist_unhashed(&inode->i_hash)) {
+               if (!(inode->i_state & (I_DIRTY|I_LOCK)))
+                       list_move(&inode->i_list, &inode_unused);
+               inodes_stat.nr_unused++;
+               if (!sb || (sb->s_flags & MS_ACTIVE)) {
+                       spin_unlock(&inode_lock);
+                       return;
+               }
+               inode->i_state |= I_WILL_FREE;
                spin_unlock(&inode_lock);
-               return;
+               /*
+                * write_inode_now is a noop as we set BDI_CAP_NO_WRITEBACK
+                * in our backing_dev_info.
+                */
+               write_inode_now(inode, 1);
+               spin_lock(&inode_lock);
+               inode->i_state &= ~I_WILL_FREE;
+               inodes_stat.nr_unused--;
+               hlist_del_init(&inode->i_hash);
        }
-
-       /* write_inode_now() ? */
-       inodes_stat.nr_unused--;
-       hlist_del_init(&inode->i_hash);
-out_truncate:
        list_del_init(&inode->i_list);
        list_del_init(&inode->i_sb_list);
        inode->i_state |= I_FREEING;
@@ -257,7 +260,6 @@ out_truncate:
        spin_unlock(&inode_lock);
        if (inode->i_data.nrpages)
                truncate_hugepages(&inode->i_data, 0);
-
        clear_inode(inode);
        destroy_inode(inode);
 }