xfs: add EOFBLOCKS inode tagging/untagging

[deliverable/linux.git] / fs / xfs / xfs_icache.c

diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index 9c8703b5cd72819610a12c37aecf2c8e329fa25d..f9afc5ff04828fb835a2840363c07c24cd9818a1 100644 (file)
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -1128,3 +1128,65 @@ xfs_reclaim_inodes_count(
        return reclaimable;
 }
 
+void
+xfs_inode_set_eofblocks_tag(
+       xfs_inode_t     *ip)
+{
+       struct xfs_mount *mp = ip->i_mount;
+       struct xfs_perag *pag;
+       int tagged;
+
+       pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino));
+       spin_lock(&pag->pag_ici_lock);
+       trace_xfs_inode_set_eofblocks_tag(ip);
+
+       tagged = radix_tree_tagged(&pag->pag_ici_root,
+                                  XFS_ICI_EOFBLOCKS_TAG);
+       radix_tree_tag_set(&pag->pag_ici_root,
+                          XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino),
+                          XFS_ICI_EOFBLOCKS_TAG);
+       if (!tagged) {
+               /* propagate the eofblocks tag up into the perag radix tree */
+               spin_lock(&ip->i_mount->m_perag_lock);
+               radix_tree_tag_set(&ip->i_mount->m_perag_tree,
+                                  XFS_INO_TO_AGNO(ip->i_mount, ip->i_ino),
+                                  XFS_ICI_EOFBLOCKS_TAG);
+               spin_unlock(&ip->i_mount->m_perag_lock);
+
+               trace_xfs_perag_set_eofblocks(ip->i_mount, pag->pag_agno,
+                                             -1, _RET_IP_);
+       }
+
+       spin_unlock(&pag->pag_ici_lock);
+       xfs_perag_put(pag);
+}
+
+void
+xfs_inode_clear_eofblocks_tag(
+       xfs_inode_t     *ip)
+{
+       struct xfs_mount *mp = ip->i_mount;
+       struct xfs_perag *pag;
+
+       pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino));
+       spin_lock(&pag->pag_ici_lock);
+       trace_xfs_inode_clear_eofblocks_tag(ip);
+
+       radix_tree_tag_clear(&pag->pag_ici_root,
+                            XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino),
+                            XFS_ICI_EOFBLOCKS_TAG);
+       if (!radix_tree_tagged(&pag->pag_ici_root, XFS_ICI_EOFBLOCKS_TAG)) {
+               /* clear the eofblocks tag from the perag radix tree */
+               spin_lock(&ip->i_mount->m_perag_lock);
+               radix_tree_tag_clear(&ip->i_mount->m_perag_tree,
+                                    XFS_INO_TO_AGNO(ip->i_mount, ip->i_ino),
+                                    XFS_ICI_EOFBLOCKS_TAG);
+               spin_unlock(&ip->i_mount->m_perag_lock);
+               trace_xfs_perag_clear_eofblocks(ip->i_mount, pag->pag_agno,
+                                              -1, _RET_IP_);
+       }
+
+       spin_unlock(&pag->pag_ici_lock);
+       xfs_perag_put(pag);
+}
+