[XFS] mark inodes for reclaim via a tag in the inode radix tree

Prepare for removing the deleted inode list by marking inodes for reclaim
in the inode radix trees so that we can use the radix trees to find
reclaimable inodes.

SGI-PV: 988142

SGI-Modid: xfs-linux-melb:xfs-kern:32331a

Signed-off-by: David Chinner <david@fromorbit.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>

1 files changed, 41 insertions, 0 deletions

diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index 34413ceaea9f..9e7f4dccab72 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -644,6 +644,47 @@ xfs_reclaim_inode(
         return 0;
 }
 
+void
+xfs_inode_set_reclaim_tag(
+        xfs_inode_t     *ip)
+{
+        xfs_mount_t     *mp = ip->i_mount;
+        xfs_perag_t     *pag = xfs_get_perag(mp, ip->i_ino);
+
+        read_lock(&pag->pag_ici_lock);
+        spin_lock(&ip->i_flags_lock);
+        radix_tree_tag_set(&pag->pag_ici_root,
+                        XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG);
+        spin_unlock(&ip->i_flags_lock);
+        read_unlock(&pag->pag_ici_lock);
+        xfs_put_perag(mp, pag);
+}
+
+void
+__xfs_inode_clear_reclaim_tag(
+        xfs_mount_t     *mp,
+        xfs_perag_t     *pag,
+        xfs_inode_t     *ip)
+{
+        radix_tree_tag_clear(&pag->pag_ici_root,
+                        XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG);
+}
+
+void
+xfs_inode_clear_reclaim_tag(
+        xfs_inode_t     *ip)
+{
+        xfs_mount_t     *mp = ip->i_mount;
+        xfs_perag_t     *pag = xfs_get_perag(mp, ip->i_ino);
+
+        read_lock(&pag->pag_ici_lock);
+        spin_lock(&ip->i_flags_lock);
+        __xfs_inode_clear_reclaim_tag(mp, pag, ip);
+        spin_unlock(&ip->i_flags_lock);
+        read_unlock(&pag->pag_ici_lock);
+        xfs_put_perag(mp, pag);
+}
+
 int
 xfs_reclaim_inodes(
         xfs_mount_t     *mp,