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authorIngo Molnar <mingo@elte.hu>2010-12-08 20:15:26 +0100
committerIngo Molnar <mingo@elte.hu>2010-12-08 20:15:29 +0100
commit8e9255e6a2141e050d51bc4d96dbef494a87d653 (patch)
treef190b142830153eaab05555a93c4f71a144ba3d4 /fs/xfs/xfs_dfrag.c
parent5091faa449ee0b7d73bc296a93bca9540fc51d0a (diff)
parent6313e3c21743cc88bb5bd8aa72948ee1e83937b6 (diff)
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Merge branch 'linus' into sched/core
Merge reason: we want to queue up dependent cleanup Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/xfs/xfs_dfrag.c')
-rw-r--r--fs/xfs/xfs_dfrag.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index 3b9582c..e60490b 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -377,6 +377,19 @@ xfs_swap_extents(
ip->i_d.di_format = tip->i_d.di_format;
tip->i_d.di_format = tmp;
+ /*
+ * The extents in the source inode could still contain speculative
+ * preallocation beyond EOF (e.g. the file is open but not modified
+ * while defrag is in progress). In that case, we need to copy over the
+ * number of delalloc blocks the data fork in the source inode is
+ * tracking beyond EOF so that when the fork is truncated away when the
+ * temporary inode is unlinked we don't underrun the i_delayed_blks
+ * counter on that inode.
+ */
+ ASSERT(tip->i_delayed_blks == 0);
+ tip->i_delayed_blks = ip->i_delayed_blks;
+ ip->i_delayed_blks = 0;
+
ilf_fields = XFS_ILOG_CORE;
switch(ip->i_d.di_format) {