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-rw-r--r--fs/btrfs/btrfs_inode.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index 2411baf35220..2a8c242bc4f5 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -91,6 +91,9 @@ struct btrfs_inode {
unsigned long runtime_flags;
+ /* Keep track of who's O_SYNC/fsycing currently */
+ atomic_t sync_writers;
+
/* full 64 bit generation number, struct vfs_inode doesn't have a big
* enough field for this.
*/