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authorBrian Foster <bfoster@redhat.com>2012-06-11 10:39:43 -0400
committerBen Myers <bpm@sgi.com>2012-06-21 14:20:06 -0500
commit9a3a5dab63461b84213052888bf38a962b22d035 (patch)
tree7f3bfcce7c1a6ea59267369f10ed5fa618afb3d1 /fs
parent3b876c8f2a361ceeed3fed894980c69066f903a0 (diff)
downloadop-kernel-dev-9a3a5dab63461b84213052888bf38a962b22d035.zip
op-kernel-dev-9a3a5dab63461b84213052888bf38a962b22d035.tar.gz
xfs: check for stale inode before acquiring iflock on push
An inode in the AIL can be flush locked and marked stale if a cluster free transaction occurs at the right time. The inode item is then marked as flushing, which causes xfsaild to spin and leaves the filesystem stalled. This is reproduced by running xfstests 273 in a loop for an extended period of time. Check for stale inodes before the flush lock. This marks the inode as pinned, leads to a log flush and allows the filesystem to proceed. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/xfs_inode_item.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 6cdbf90c..d041d47 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -505,6 +505,14 @@ xfs_inode_item_push(
}
/*
+ * Stale inode items should force out the iclog.
+ */
+ if (ip->i_flags & XFS_ISTALE) {
+ rval = XFS_ITEM_PINNED;
+ goto out_unlock;
+ }
+
+ /*
* Someone else is already flushing the inode. Nothing we can do
* here but wait for the flush to finish and remove the item from
* the AIL.
@@ -514,15 +522,6 @@ xfs_inode_item_push(
goto out_unlock;
}
- /*
- * Stale inode items should force out the iclog.
- */
- if (ip->i_flags & XFS_ISTALE) {
- xfs_ifunlock(ip);
- xfs_iunlock(ip, XFS_ILOCK_SHARED);
- return XFS_ITEM_PINNED;
- }
-
ASSERT(iip->ili_fields != 0 || XFS_FORCED_SHUTDOWN(ip->i_mount));
ASSERT(iip->ili_logged == 0 || XFS_FORCED_SHUTDOWN(ip->i_mount));
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