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authorDave Chinner <david@fromorbit.com>2010-01-10 23:51:46 +0000
committerAlex Elder <aelder@sgi.com>2010-01-15 13:44:21 -0600
commit018027be90a6946e8cf3f9b17b5582384f7ed117 (patch)
treea8816b9884e21eab9cb3342af9de9ddc28f9f0de /fs/xfs
parentc8e20be020f234c8d492927a424a7d8bbefd5b5d (diff)
downloadop-kernel-dev-018027be90a6946e8cf3f9b17b5582384f7ed117.zip
op-kernel-dev-018027be90a6946e8cf3f9b17b5582384f7ed117.tar.gz
xfs: Avoid inodes in reclaim when flushing from inode cache
The reclaim code will handle flushing of dirty inodes before reclaim occurs, so avoid them when determining whether an inode is a candidate for flushing to disk when walking the radix trees. This is based on a test patch from Christoph Hellwig. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/linux-2.6/xfs_sync.c31
1 files changed, 18 insertions, 13 deletions
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index e19d255..1f5e4bb 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -180,26 +180,31 @@ xfs_sync_inode_valid(
struct xfs_perag *pag)
{
struct inode *inode = VFS_I(ip);
+ int error = EFSCORRUPTED;
/* nothing to sync during shutdown */
- if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
- read_unlock(&pag->pag_ici_lock);
- return EFSCORRUPTED;
- }
+ if (XFS_FORCED_SHUTDOWN(ip->i_mount))
+ goto out_unlock;
- /* If we can't get a reference on the inode, it must be in reclaim. */
- if (!igrab(inode)) {
- read_unlock(&pag->pag_ici_lock);
- return ENOENT;
- }
- read_unlock(&pag->pag_ici_lock);
+ /* avoid new or reclaimable inodes. Leave for reclaim code to flush */
+ error = ENOENT;
+ if (xfs_iflags_test(ip, XFS_INEW | XFS_IRECLAIMABLE | XFS_IRECLAIM))
+ goto out_unlock;
- if (is_bad_inode(inode) || xfs_iflags_test(ip, XFS_INEW)) {
+ /* If we can't grab the inode, it must on it's way to reclaim. */
+ if (!igrab(inode))
+ goto out_unlock;
+
+ if (is_bad_inode(inode)) {
IRELE(ip);
- return ENOENT;
+ goto out_unlock;
}
- return 0;
+ /* inode is valid */
+ error = 0;
+out_unlock:
+ read_unlock(&pag->pag_ici_lock);
+ return error;
}
STATIC int
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