[PATCH] export generic_drop_inode() to modules

OCFS2 wants to mark an inode which has been orphaned by another node so
that during final iput it takes the correct path through the VFS and can
pass through the OCFS2 delete_inode callback.  Since i_nlink can get out of
date with other nodes, the best way I see to accomplish this is by clearing
i_nlink on those inodes at drop_inode time.  Other than this small amount
of work, nothing different needs to happen, so I think it would be cleanest
to be able to just call generic_drop_inode at the end of the OCFS2
drop_inode callback.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/inode.c b/fs/inode.c
index 1f9a3a2b89bc67add68e90faa78612ebf6e884cf..6d695037a0a3df62f6f977091881ae7a596705c9 100644 (file)
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -1052,7 +1052,7 @@ static void generic_forget_inode(struct inode *inode)
  * inode when the usage count drops to zero, and
  * i_nlink is zero.
  */
-static void generic_drop_inode(struct inode *inode)
+void generic_drop_inode(struct inode *inode)
 {
        if (!inode->i_nlink)
                generic_delete_inode(inode);
@@ -1060,6 +1060,8 @@ static void generic_drop_inode(struct inode *inode)
                generic_forget_inode(inode);
 }
 
+EXPORT_SYMBOL_GPL(generic_drop_inode);
+
 /*
  * Called when we're dropping the last reference
  * to an inode. 

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 047bde30836ac0c1278e289bbff500dae39f570b..302ec20838caa6bcde0ce7c2303d22f72d1d6e1d 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1435,6 +1435,7 @@ extern struct inode * igrab(struct inode *);
 extern ino_t iunique(struct super_block *, ino_t);
 extern int inode_needs_sync(struct inode *inode);
 extern void generic_delete_inode(struct inode *inode);
+extern void generic_drop_inode(struct inode *inode);
 
 extern struct inode *ilookup5(struct super_block *sb, unsigned long hashval,
                int (*test)(struct inode *, void *), void *data);