[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/ext4/extents_status.h b/src/kernel/linux/v4.14/fs/ext4/extents_status.h
new file mode 100644
index 0000000..ca90fc9
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/ext4/extents_status.h
@@ -0,0 +1,178 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * fs/ext4/extents_status.h
+ *
+ * Written by Yongqiang Yang <xiaoqiangnk@gmail.com>
+ * Modified by
+ * Allison Henderson <achender@linux.vnet.ibm.com>
+ * Zheng Liu <wenqing.lz@taobao.com>
+ *
+ */
+
+#ifndef _EXT4_EXTENTS_STATUS_H
+#define _EXT4_EXTENTS_STATUS_H
+
+/*
+ * Turn on ES_DEBUG__ to get lots of info about extent status operations.
+ */
+#ifdef ES_DEBUG__
+#define es_debug(fmt, ...) printk(fmt, ##__VA_ARGS__)
+#else
+#define es_debug(fmt, ...) no_printk(fmt, ##__VA_ARGS__)
+#endif
+
+/*
+ * With ES_AGGRESSIVE_TEST defined, the result of es caching will be
+ * checked with old map_block's result.
+ */
+#define ES_AGGRESSIVE_TEST__
+
+/*
+ * These flags live in the high bits of extent_status.es_pblk
+ */
+enum {
+ ES_WRITTEN_B,
+ ES_UNWRITTEN_B,
+ ES_DELAYED_B,
+ ES_HOLE_B,
+ ES_REFERENCED_B,
+ ES_FLAGS
+};
+
+#define ES_SHIFT (sizeof(ext4_fsblk_t)*8 - ES_FLAGS)
+#define ES_MASK (~((ext4_fsblk_t)0) << ES_SHIFT)
+
+#define EXTENT_STATUS_WRITTEN (1 << ES_WRITTEN_B)
+#define EXTENT_STATUS_UNWRITTEN (1 << ES_UNWRITTEN_B)
+#define EXTENT_STATUS_DELAYED (1 << ES_DELAYED_B)
+#define EXTENT_STATUS_HOLE (1 << ES_HOLE_B)
+#define EXTENT_STATUS_REFERENCED (1 << ES_REFERENCED_B)
+
+#define ES_TYPE_MASK ((ext4_fsblk_t)(EXTENT_STATUS_WRITTEN | \
+ EXTENT_STATUS_UNWRITTEN | \
+ EXTENT_STATUS_DELAYED | \
+ EXTENT_STATUS_HOLE) << ES_SHIFT)
+
+struct ext4_sb_info;
+struct ext4_extent;
+
+struct extent_status {
+ struct rb_node rb_node;
+ ext4_lblk_t es_lblk; /* first logical block extent covers */
+ ext4_lblk_t es_len; /* length of extent in block */
+ ext4_fsblk_t es_pblk; /* first physical block */
+};
+
+struct ext4_es_tree {
+ struct rb_root root;
+ struct extent_status *cache_es; /* recently accessed extent */
+};
+
+struct ext4_es_stats {
+ unsigned long es_stats_shrunk;
+ unsigned long es_stats_cache_hits;
+ unsigned long es_stats_cache_misses;
+ u64 es_stats_scan_time;
+ u64 es_stats_max_scan_time;
+ struct percpu_counter es_stats_all_cnt;
+ struct percpu_counter es_stats_shk_cnt;
+};
+
+extern int __init ext4_init_es(void);
+extern void ext4_exit_es(void);
+extern void ext4_es_init_tree(struct ext4_es_tree *tree);
+
+extern int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t lblk,
+ ext4_lblk_t len, ext4_fsblk_t pblk,
+ unsigned int status);
+extern void ext4_es_cache_extent(struct inode *inode, ext4_lblk_t lblk,
+ ext4_lblk_t len, ext4_fsblk_t pblk,
+ unsigned int status);
+extern int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
+ ext4_lblk_t len);
+extern void ext4_es_find_delayed_extent_range(struct inode *inode,
+ ext4_lblk_t lblk, ext4_lblk_t end,
+ struct extent_status *es);
+extern int ext4_es_lookup_extent(struct inode *inode, ext4_lblk_t lblk,
+ struct extent_status *es);
+
+static inline unsigned int ext4_es_status(struct extent_status *es)
+{
+ return es->es_pblk >> ES_SHIFT;
+}
+
+static inline unsigned int ext4_es_type(struct extent_status *es)
+{
+ return (es->es_pblk & ES_TYPE_MASK) >> ES_SHIFT;
+}
+
+static inline int ext4_es_is_written(struct extent_status *es)
+{
+ return (ext4_es_type(es) & EXTENT_STATUS_WRITTEN) != 0;
+}
+
+static inline int ext4_es_is_unwritten(struct extent_status *es)
+{
+ return (ext4_es_type(es) & EXTENT_STATUS_UNWRITTEN) != 0;
+}
+
+static inline int ext4_es_is_delayed(struct extent_status *es)
+{
+ return (ext4_es_type(es) & EXTENT_STATUS_DELAYED) != 0;
+}
+
+static inline int ext4_es_is_hole(struct extent_status *es)
+{
+ return (ext4_es_type(es) & EXTENT_STATUS_HOLE) != 0;
+}
+
+static inline void ext4_es_set_referenced(struct extent_status *es)
+{
+ es->es_pblk |= ((ext4_fsblk_t)EXTENT_STATUS_REFERENCED) << ES_SHIFT;
+}
+
+static inline void ext4_es_clear_referenced(struct extent_status *es)
+{
+ es->es_pblk &= ~(((ext4_fsblk_t)EXTENT_STATUS_REFERENCED) << ES_SHIFT);
+}
+
+static inline int ext4_es_is_referenced(struct extent_status *es)
+{
+ return (ext4_es_status(es) & EXTENT_STATUS_REFERENCED) != 0;
+}
+
+static inline ext4_fsblk_t ext4_es_pblock(struct extent_status *es)
+{
+ return es->es_pblk & ~ES_MASK;
+}
+
+static inline void ext4_es_store_pblock(struct extent_status *es,
+ ext4_fsblk_t pb)
+{
+ ext4_fsblk_t block;
+
+ block = (pb & ~ES_MASK) | (es->es_pblk & ES_MASK);
+ es->es_pblk = block;
+}
+
+static inline void ext4_es_store_status(struct extent_status *es,
+ unsigned int status)
+{
+ es->es_pblk = (((ext4_fsblk_t)status << ES_SHIFT) & ES_MASK) |
+ (es->es_pblk & ~ES_MASK);
+}
+
+static inline void ext4_es_store_pblock_status(struct extent_status *es,
+ ext4_fsblk_t pb,
+ unsigned int status)
+{
+ es->es_pblk = (((ext4_fsblk_t)status << ES_SHIFT) & ES_MASK) |
+ (pb & ~ES_MASK);
+}
+
+extern int ext4_es_register_shrinker(struct ext4_sb_info *sbi);
+extern void ext4_es_unregister_shrinker(struct ext4_sb_info *sbi);
+
+extern int ext4_seq_es_shrinker_info_show(struct seq_file *seq, void *v);
+
+#endif /* _EXT4_EXTENTS_STATUS_H */