Added missing tegra files.HEADmaster

1 files changed, 126 insertions, 0 deletions

diff --git a/include/linux/ext2_fs_sb.h b/include/linux/ext2_fs_sb.h
new file mode 100644
index 00000000000..db4d9f586bb
--- /dev/null
+++ b/include/linux/ext2_fs_sb.h
@@ -0,0 +1,126 @@
+/*
+ *  linux/include/linux/ext2_fs_sb.h
+ *
+ * Copyright (C) 1992, 1993, 1994, 1995
+ * Remy Card (card@masi.ibp.fr)
+ * Laboratoire MASI - Institut Blaise Pascal
+ * Universite Pierre et Marie Curie (Paris VI)
+ *
+ *  from
+ *
+ *  linux/include/linux/minix_fs_sb.h
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+#ifndef _LINUX_EXT2_FS_SB
+#define _LINUX_EXT2_FS_SB
+
+#include <linux/blockgroup_lock.h>
+#include <linux/percpu_counter.h>
+#include <linux/rbtree.h>
+
+/* XXX Here for now... not interested in restructing headers JUST now */
+
+/* data type for block offset of block group */
+typedef int ext2_grpblk_t;
+
+/* data type for filesystem-wide blocks number */
+typedef unsigned long ext2_fsblk_t;
+
+#define E2FSBLK "%lu"
+
+struct ext2_reserve_window {
+        ext2_fsblk_t            _rsv_start;     /* First byte reserved */
+        ext2_fsblk_t            _rsv_end;       /* Last byte reserved or 0 */
+};
+
+struct ext2_reserve_window_node {
+        struct rb_node          rsv_node;
+        __u32                   rsv_goal_size;
+        __u32                   rsv_alloc_hit;
+        struct ext2_reserve_window      rsv_window;
+};
+
+struct ext2_block_alloc_info {
+        /* information about reservation window */
+        struct ext2_reserve_window_node rsv_window_node;
+        /*
+         * was i_next_alloc_block in ext2_inode_info
+         * is the logical (file-relative) number of the
+         * most-recently-allocated block in this file.
+         * We use this for detecting linearly ascending allocation requests.
+         */
+        __u32                   last_alloc_logical_block;
+        /*
+         * Was i_next_alloc_goal in ext2_inode_info
+         * is the *physical* companion to i_next_alloc_block.
+         * it the the physical block number of the block which was most-recentl
+         * allocated to this file.  This give us the goal (target) for the next
+         * allocation when we detect linearly ascending requests.
+         */
+        ext2_fsblk_t            last_alloc_physical_block;
+};
+
+#define rsv_start rsv_window._rsv_start
+#define rsv_end rsv_window._rsv_end
+
+/*
+ * second extended-fs super-block data in memory
+ */
+struct ext2_sb_info {
+        unsigned long s_frag_size;      /* Size of a fragment in bytes */
+        unsigned long s_frags_per_block;/* Number of fragments per block */
+        unsigned long s_inodes_per_block;/* Number of inodes per block */
+        unsigned long s_frags_per_group;/* Number of fragments in a group */
+        unsigned long s_blocks_per_group;/* Number of blocks in a group */
+        unsigned long s_inodes_per_group;/* Number of inodes in a group */
+        unsigned long s_itb_per_group;  /* Number of inode table blocks per group */
+        unsigned long s_gdb_count;      /* Number of group descriptor blocks */
+        unsigned long s_desc_per_block; /* Number of group descriptors per block */
+        unsigned long s_groups_count;   /* Number of groups in the fs */
+        unsigned long s_overhead_last;  /* Last calculated overhead */
+        unsigned long s_blocks_last;    /* Last seen block count */
+        struct buffer_head * s_sbh;     /* Buffer containing the super block */
+        struct ext2_super_block * s_es; /* Pointer to the super block in the buffer */
+        struct buffer_head ** s_group_desc;
+        unsigned long  s_mount_opt;
+        unsigned long s_sb_block;
+        uid_t s_resuid;
+        gid_t s_resgid;
+        unsigned short s_mount_state;
+        unsigned short s_pad;
+        int s_addr_per_block_bits;
+        int s_desc_per_block_bits;
+        int s_inode_size;
+        int s_first_ino;
+        spinlock_t s_next_gen_lock;
+        u32 s_next_generation;
+        unsigned long s_dir_count;
+        u8 *s_debts;
+        struct percpu_counter s_freeblocks_counter;
+        struct percpu_counter s_freeinodes_counter;
+        struct percpu_counter s_dirs_counter;
+        struct blockgroup_lock *s_blockgroup_lock;
+        /* root of the per fs reservation window tree */
+        spinlock_t s_rsv_window_lock;
+        struct rb_root s_rsv_window_root;
+        struct ext2_reserve_window_node s_rsv_window_head;
+        /*
+         * s_lock protects against concurrent modifications of s_mount_state,
+         * s_blocks_last, s_overhead_last and the content of superblock's
+         * buffer pointed to by sbi->s_es.
+         *
+         * Note: It is used in ext2_show_options() to provide a consistent view
+         * of the mount options.
+         */
+        spinlock_t s_lock;
+};
+
+static inline spinlock_t *
+sb_bgl_lock(struct ext2_sb_info *sbi, unsigned int block_group)
+{
+        return bgl_lock_ptr(sbi->s_blockgroup_lock, block_group);
+}
+
+#endif  /* _LINUX_EXT2_FS_SB */