[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>

diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index 34413ceaea9f8c9424d2088c1fca22984a7c6972..9e7f4dccab728bdb8e700689c6ce5c40108fec30 100644 (file)
--- 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,

diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h
index c1bcd500509ac11696901ddf87e97ffeba8f6726..5f6de1efe1f696c51ea5e433120762e0c7e20bf4 100644 (file)
--- a/fs/xfs/linux-2.6/xfs_sync.h
+++ b/fs/xfs/linux-2.6/xfs_sync.h
@@ -48,4 +48,8 @@ void xfs_flush_device(struct xfs_inode *ip);
 int xfs_reclaim_inode(struct xfs_inode *ip, int locked, int sync_mode);
 int xfs_reclaim_inodes(struct xfs_mount *mp, int noblock, int mode);
 
+void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
+void xfs_inode_clear_reclaim_tag(struct xfs_inode *ip);
+void __xfs_inode_clear_reclaim_tag(struct xfs_mount *mp, struct xfs_perag *pag,
+                               struct xfs_inode *ip);
 #endif

diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h
index 729ee3eb39ad11983280231a031f107ac36b3d68..2bfd86329141750541d37732ce10842a4b0b733b 100644 (file)
--- a/fs/xfs/xfs_ag.h
+++ b/fs/xfs/xfs_ag.h
@@ -204,6 +204,11 @@ typedef struct xfs_perag
 #endif
 } xfs_perag_t;
 
+/*
+ * tags for inode radix tree
+ */
+#define XFS_ICI_RECLAIM_TAG    0       /* inode is to be reclaimed */
+
 #define        XFS_AG_MAXLEVELS(mp)            ((mp)->m_ag_maxlevels)
 #define        XFS_MIN_FREELIST_RAW(bl,cl,mp)  \
        (MIN(bl + 1, XFS_AG_MAXLEVELS(mp)) + MIN(cl + 1, XFS_AG_MAXLEVELS(mp)))

diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c
index c4414e8bce8d76a5d15305b85359b175c68ed832..a0387f14c20404326f5f40927162676ca5683470 100644 (file)
--- a/fs/xfs/xfs_iget.c
+++ b/fs/xfs/xfs_iget.c
@@ -91,6 +91,9 @@ xfs_iget_cache_hit(
                }
                xfs_iflags_set(ip, XFS_INEW);
                xfs_iflags_clear(ip, XFS_IRECLAIMABLE);
+
+               /* clear the radix tree reclaim flag as well. */
+               __xfs_inode_clear_reclaim_tag(mp, pag, ip);
                read_unlock(&pag->pag_ici_lock);
 
                XFS_MOUNT_ILOCK(mp);

diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 07945634923bd9fb1f64bec707b5739e0b06b029..f89a73eb0167c7196ea08093a818a127d4e13dd1 100644 (file)
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -2845,6 +2845,7 @@ xfs_reclaim(
                spin_unlock(&ip->i_flags_lock);
                list_add_tail(&ip->i_reclaim, &mp->m_del_inodes);
                XFS_MOUNT_IUNLOCK(mp);
+               xfs_inode_set_reclaim_tag(ip);
        }
        return 0;
 }