xfs: support a tag-based inode_ag_iterator

Genericize xfs_inode_ag_walk() to support an optional radix tree tag
and args argument for the execute function. Create a new wrapper
called xfs_inode_ag_iterator_tag() that performs a tag based walk
of perag's and inodes.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/fs/xfs/xfs_icache.h b/fs/xfs/xfs_icache.h
index db3613075dc6..54c113478dfc 100644
--- a/fs/xfs/xfs_icache.h
+++ b/fs/xfs/xfs_icache.h
@@ -40,7 +40,12 @@ void xfs_inode_clear_eofblocks_tag(struct xfs_inode *ip);
 
 int xfs_sync_inode_grab(struct xfs_inode *ip);
 int xfs_inode_ag_iterator(struct xfs_mount *mp,
-        int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, int flags),
-        int flags);
+        int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag,
+                int flags, void *args),
+        int flags, void *args);
+int xfs_inode_ag_iterator_tag(struct xfs_mount *mp,
+        int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag,
+                int flags, void *args),
+        int flags, void *args, int tag);
 
 #endif