diff options
| author | Dave Chinner <david@fromorbit.com> | 2010-01-11 00:51:46 +0100 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2010-01-15 20:44:21 +0100 |
| commit | 018027be90a6946e8cf3f9b17b5582384f7ed117 (patch) | |
| tree | a8816b9884e21eab9cb3342af9de9ddc28f9f0de | |
| parent | xfs: reclaim inodes under a write lock (diff) | |
| download | linux-018027be90a6946e8cf3f9b17b5582384f7ed117.tar.xz linux-018027be90a6946e8cf3f9b17b5582384f7ed117.zip | |
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>
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_sync.c | 31 |
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 e19d25555c3f..1f5e4bb5e970 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 |