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authorJames Morris <jmorris@namei.org>2011-01-10 09:46:24 +1100
committerJames Morris <jmorris@namei.org>2011-01-10 09:46:24 +1100
commitd2e7ad19229f982fc1eb731827d82ceac90abfb3 (patch)
tree98a3741b4d4b27a48b3c7ea9babe331e539416a8 /fs/xfs/xfs_dfrag.c
parentd03a5d888fb688c832d470b749acc5ed38e0bc1d (diff)
parent0c21e3aaf6ae85bee804a325aa29c325209180fd (diff)
Merge branch 'master' into next
Conflicts: security/smack/smack_lsm.c Verified and added fix by Stephen Rothwell <sfr@canb.auug.org.au> Ok'd by Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: James Morris <jmorris@namei.org>
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 3b9582c60a22..e60490bc00a6 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) {