[XFS] remove the mount inode list

Now we've removed all users of the mount inode list, we can kill it. This
reduces the size of the xfs_inode by 2 pointers.

SGI-PV: 988139

SGI-Modid: xfs-linux-melb:xfs-kern:32293a

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, 1 insertions, 41 deletions

diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c
index 4c92d190b3bd..1256746b249f 100644
--- a/fs/xfs/xfs_iget.c
+++ b/fs/xfs/xfs_iget.c
@@ -76,7 +76,6 @@ xfs_iget_core(
 {
         struct inode    *old_inode;
         xfs_inode_t     *ip;
-        xfs_inode_t     *iq;
         int             error;
         unsigned long   first_index, mask;
         xfs_perag_t     *pag;
@@ -255,24 +254,6 @@ finish_inode:
 
         write_unlock(&pag->pag_ici_lock);
         radix_tree_preload_end();
-
-        /*
-         * Link ip to its mount and thread it on the mount's inode list.
-         */
-        XFS_MOUNT_ILOCK(mp);
-        if ((iq = mp->m_inodes)) {
-                ASSERT(iq->i_mprev->i_mnext == iq);
-                ip->i_mprev = iq->i_mprev;
-                iq->i_mprev->i_mnext = ip;
-                iq->i_mprev = ip;
-                ip->i_mnext = iq;
-        } else {
-                ip->i_mnext = ip;
-                ip->i_mprev = ip;
-        }
-        mp->m_inodes = ip;
-
-        XFS_MOUNT_IUNLOCK(mp);
         xfs_put_perag(mp, pag);
 
  return_ip:
@@ -493,36 +474,15 @@ xfs_iextract(
 {
         xfs_mount_t     *mp = ip->i_mount;
         xfs_perag_t     *pag = xfs_get_perag(mp, ip->i_ino);
-        xfs_inode_t     *iq;
 
         write_lock(&pag->pag_ici_lock);
         radix_tree_delete(&pag->pag_ici_root, XFS_INO_TO_AGINO(mp, ip->i_ino));
         write_unlock(&pag->pag_ici_lock);
         xfs_put_perag(mp, pag);
 
-        /*
-         * Remove from mount's inode list.
-         */
-        XFS_MOUNT_ILOCK(mp);
-        ASSERT((ip->i_mnext != NULL) && (ip->i_mprev != NULL));
-        iq = ip->i_mnext;
-        iq->i_mprev = ip->i_mprev;
-        ip->i_mprev->i_mnext = iq;
-
-        /*
-         * Fix up the head pointer if it points to the inode being deleted.
-         */
-        if (mp->m_inodes == ip) {
-                if (ip == iq) {
-                        mp->m_inodes = NULL;
-                } else {
-                        mp->m_inodes = iq;
-                }
-        }
-
         /* Deal with the deleted inodes list */
+        XFS_MOUNT_ILOCK(mp);
         list_del_init(&ip->i_reclaim);
-
         mp->m_ireclaims++;
         XFS_MOUNT_IUNLOCK(mp);
 }