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-rw-r--r--fs/btrfs/btrfs_inode.h12
1 files changed, 7 insertions, 5 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index a54d354cefcb..c71abec0ab90 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -128,12 +128,14 @@ struct btrfs_inode {
u64 last_unlink_trans;
/*
- * These two counters are for delalloc metadata reservations. We keep
- * track of how many extents we've accounted for vs how many extents we
- * have.
+ * Counters to keep track of the number of extent item's we may use due
+ * to delalloc and such. outstanding_extents is the number of extent
+ * items we think we'll end up using, and reserved_extents is the number
+ * of extent items we've reserved metadata for.
*/
- int delalloc_reserved_extents;
- int delalloc_extents;
+ spinlock_t accounting_lock;
+ int reserved_extents;
+ int outstanding_extents;
/*
* ordered_data_close is set by truncate when a file that used
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