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authorDave Chinner <david@fromorbit.com>2009-06-08 15:35:14 +0200
committerChristoph Hellwig <hch@brick.lst.de>2009-06-08 15:35:14 +0200
commit75f3cb1393133682958db6f157e1b6473e5a366b (patch)
treee2e22c20c20e7d37e64b8f7fa4148253be01364a /fs/xfs/xfs_ag.h
parentabc1064742604e60a47a65fa3214dc1a84db093d (diff)
xfs: introduce a per-ag inode iterator
Given that we walk across the per-ag inode lists so often, it makes sense to introduce an iterator for this. Convert the sync and reclaim code to use this new iterator, quota code will follow in the next patch. Also change xfs_reclaim_inode to return -EGAIN instead of 1 for an inode already under reclaim. This simplifies the AG iterator and doesn't matter for the only other caller. [hch: merged the lookup and execute callbacks back into one to get the pag_ici_lock locking correct and simplify the code flow] Signed-off-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Diffstat (limited to 'fs/xfs/xfs_ag.h')
-rw-r--r--fs/xfs/xfs_ag.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h
index c8641f713ca..f24b50b68d0 100644
--- a/fs/xfs/xfs_ag.h
+++ b/fs/xfs/xfs_ag.h
@@ -212,6 +212,8 @@ typedef struct xfs_perag
/*
* tags for inode radix tree
*/
+#define XFS_ICI_NO_TAG (-1) /* special flag for an untagged lookup
+ in xfs_inode_ag_iterator */
#define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */
#define XFS_AG_MAXLEVELS(mp) ((mp)->m_ag_maxlevels)