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-rw-r--r--fs/udf/udf_i.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/udf/udf_i.h b/fs/udf/udf_i.h
index bb8309dcd5c1..b5cd8ed2aa12 100644
--- a/fs/udf/udf_i.h
+++ b/fs/udf/udf_i.h
@@ -1,6 +1,19 @@
#ifndef _UDF_I_H
#define _UDF_I_H
+struct extent_position {
+ struct buffer_head *bh;
+ uint32_t offset;
+ struct kernel_lb_addr block;
+};
+
+struct udf_ext_cache {
+ /* Extent position */
+ struct extent_position epos;
+ /* Start logical offset in bytes */
+ loff_t lstart;
+};
+
/*
* The i_data_sem and i_mutex serve for protection of allocation information
* of a regular files and symlinks. This includes all extents belonging to
@@ -35,6 +48,9 @@ struct udf_inode_info {
__u8 *i_data;
} i_ext;
struct rw_semaphore i_data_sem;
+ struct udf_ext_cache cached_extent;
+ /* Spinlock for protecting extent cache */
+ spinlock_t i_extent_cache_lock;
struct inode vfs_inode;
};