From: Dave Chinner <david@fromorbit.com>
To: xfs@oss.sgi.com
Subject: [PATCH 2/6] XFS: mark inodes for reclaim via a tag in the inode radix tree
Date: Sun, 14 Sep 2008 00:14:56 +1000 [thread overview]
Message-ID: <1221315300-30336-3-git-send-email-david@fromorbit.com> (raw)
In-Reply-To: <1221315300-30336-1-git-send-email-david@fromorbit.com>
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.
Signed-off-by: Dave Chinner <david@fromorbit.com>
---
fs/xfs/linux-2.6/xfs_sync.c | 41 +++++++++++++++++++++++++++++++++++++++++
fs/xfs/linux-2.6/xfs_sync.h | 4 ++++
fs/xfs/xfs_ag.h | 5 +++++
fs/xfs/xfs_iget.c | 3 +++
fs/xfs/xfs_vnodeops.c | 1 +
5 files changed, 54 insertions(+), 0 deletions(-)
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index e6363c0..b01748c 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -644,6 +644,47 @@ xfs_finish_reclaim(
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_finish_reclaim_all(
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 23117a1..fcaf004 100644
--- 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_finish_reclaim(struct xfs_inode *ip, int locked, int sync_mode);
int xfs_finish_reclaim_all(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 61b292a..426e438 100644
--- a/fs/xfs/xfs_ag.h
+++ b/fs/xfs/xfs_ag.h
@@ -203,6 +203,11 @@ typedef struct xfs_perag
struct radix_tree_root pag_ici_root; /* incore inode cache root */
} 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 533a375..24a74d6 100644
--- 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 02ee432..e5393f3 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -2812,6 +2812,7 @@ 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;
}
--
1.5.6
next prev parent reply other threads:[~2008-09-13 14:14 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-13 14:14 [PATCH 0/6] XFS: Track reclaimable inodes in inode cache Dave Chinner
2008-09-13 14:14 ` [PATCH 1/6] XFS: move inode reclaim functions to xfs_sync.c Dave Chinner
2008-09-15 21:13 ` Christoph Hellwig
2008-09-13 14:14 ` Dave Chinner [this message]
2008-09-15 21:14 ` [PATCH 2/6] XFS: mark inodes for reclaim via a tag in the inode radix tree Christoph Hellwig
2008-09-16 4:26 ` Dave Chinner
2008-09-13 14:14 ` [PATCH 3/6] XFS: rename inode reclaim functions Dave Chinner
2008-09-15 21:14 ` Christoph Hellwig
2008-09-16 4:27 ` Dave Chinner
2008-09-13 14:14 ` [PATCH 4/6] XFS: use the inode radix tree for reclaiming inodes Dave Chinner
2008-09-15 21:15 ` Christoph Hellwig
2008-09-13 14:14 ` [PATCH 5/6] XFS: kill deleted inodes list Dave Chinner
2008-09-15 21:17 ` Christoph Hellwig
2008-09-13 14:15 ` [PATCH 6/6] XFS: use is_bad_inode() directly in xfs_reclaim_inode() Dave Chinner
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