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-rw-r--r--fs/ocfs2/alloc.h101
1 files changed, 82 insertions, 19 deletions
diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h
index 353254ba29e..9c122d57446 100644
--- a/fs/ocfs2/alloc.h
+++ b/fs/ocfs2/alloc.h
@@ -45,7 +45,8 @@
45 * 45 *
46 * ocfs2_extent_tree contains info for the root of the b-tree, it must have a 46 * ocfs2_extent_tree contains info for the root of the b-tree, it must have a
47 * root ocfs2_extent_list and a root_bh so that they can be used in the b-tree 47 * root ocfs2_extent_list and a root_bh so that they can be used in the b-tree
48 * functions. With metadata ecc, we now call different journal_access 48 * functions. It needs the ocfs2_caching_info structure associated with
49 * I/O on the tree. With metadata ecc, we now call different journal_access
49 * functions for each type of metadata, so it must have the 50 * functions for each type of metadata, so it must have the
50 * root_journal_access function. 51 * root_journal_access function.
51 * ocfs2_extent_tree_operations abstract the normal operations we do for 52 * ocfs2_extent_tree_operations abstract the normal operations we do for
@@ -56,6 +57,7 @@ struct ocfs2_extent_tree {
56 struct ocfs2_extent_tree_operations *et_ops; 57 struct ocfs2_extent_tree_operations *et_ops;
57 struct buffer_head *et_root_bh; 58 struct buffer_head *et_root_bh;
58 struct ocfs2_extent_list *et_root_el; 59 struct ocfs2_extent_list *et_root_el;
60 struct ocfs2_caching_info *et_ci;
59 ocfs2_journal_access_func et_root_journal_access; 61 ocfs2_journal_access_func et_root_journal_access;
60 void *et_object; 62 void *et_object;
61 unsigned int et_max_leaf_clusters; 63 unsigned int et_max_leaf_clusters;
@@ -66,31 +68,32 @@ struct ocfs2_extent_tree {
66 * specified object buffer. 68 * specified object buffer.
67 */ 69 */
68void ocfs2_init_dinode_extent_tree(struct ocfs2_extent_tree *et, 70void ocfs2_init_dinode_extent_tree(struct ocfs2_extent_tree *et,
69 struct inode *inode, 71 struct ocfs2_caching_info *ci,
70 struct buffer_head *bh); 72 struct buffer_head *bh);
71void ocfs2_init_xattr_tree_extent_tree(struct ocfs2_extent_tree *et, 73void ocfs2_init_xattr_tree_extent_tree(struct ocfs2_extent_tree *et,
72 struct inode *inode, 74 struct ocfs2_caching_info *ci,
73 struct buffer_head *bh); 75 struct buffer_head *bh);
74struct ocfs2_xattr_value_buf; 76struct ocfs2_xattr_value_buf;
75void ocfs2_init_xattr_value_extent_tree(struct ocfs2_extent_tree *et, 77void ocfs2_init_xattr_value_extent_tree(struct ocfs2_extent_tree *et,
76 struct inode *inode, 78 struct ocfs2_caching_info *ci,
77 struct ocfs2_xattr_value_buf *vb); 79 struct ocfs2_xattr_value_buf *vb);
78void ocfs2_init_dx_root_extent_tree(struct ocfs2_extent_tree *et, 80void ocfs2_init_dx_root_extent_tree(struct ocfs2_extent_tree *et,
79 struct inode *inode, 81 struct ocfs2_caching_info *ci,
80 struct buffer_head *bh); 82 struct buffer_head *bh);
83void ocfs2_init_refcount_extent_tree(struct ocfs2_extent_tree *et,
84 struct ocfs2_caching_info *ci,
85 struct buffer_head *bh);
81 86
82/* 87/*
83 * Read an extent block into *bh. If *bh is NULL, a bh will be 88 * Read an extent block into *bh. If *bh is NULL, a bh will be
84 * allocated. This is a cached read. The extent block will be validated 89 * allocated. This is a cached read. The extent block will be validated
85 * with ocfs2_validate_extent_block(). 90 * with ocfs2_validate_extent_block().
86 */ 91 */
87int ocfs2_read_extent_block(struct inode *inode, u64 eb_blkno, 92int ocfs2_read_extent_block(struct ocfs2_caching_info *ci, u64 eb_blkno,
88 struct buffer_head **bh); 93 struct buffer_head **bh);
89 94
90struct ocfs2_alloc_context; 95struct ocfs2_alloc_context;
91int ocfs2_insert_extent(struct ocfs2_super *osb, 96int ocfs2_insert_extent(handle_t *handle,
92 handle_t *handle,
93 struct inode *inode,
94 struct ocfs2_extent_tree *et, 97 struct ocfs2_extent_tree *et,
95 u32 cpos, 98 u32 cpos,
96 u64 start_blk, 99 u64 start_blk,
@@ -103,25 +106,36 @@ enum ocfs2_alloc_restarted {
103 RESTART_TRANS, 106 RESTART_TRANS,
104 RESTART_META 107 RESTART_META
105}; 108};
106int ocfs2_add_clusters_in_btree(struct ocfs2_super *osb, 109int ocfs2_add_clusters_in_btree(handle_t *handle,
107 struct inode *inode, 110 struct ocfs2_extent_tree *et,
108 u32 *logical_offset, 111 u32 *logical_offset,
109 u32 clusters_to_add, 112 u32 clusters_to_add,
110 int mark_unwritten, 113 int mark_unwritten,
111 struct ocfs2_extent_tree *et,
112 handle_t *handle,
113 struct ocfs2_alloc_context *data_ac, 114 struct ocfs2_alloc_context *data_ac,
114 struct ocfs2_alloc_context *meta_ac, 115 struct ocfs2_alloc_context *meta_ac,
115 enum ocfs2_alloc_restarted *reason_ret); 116 enum ocfs2_alloc_restarted *reason_ret);
116struct ocfs2_cached_dealloc_ctxt; 117struct ocfs2_cached_dealloc_ctxt;
118struct ocfs2_path;
119int ocfs2_split_extent(handle_t *handle,
120 struct ocfs2_extent_tree *et,
121 struct ocfs2_path *path,
122 int split_index,
123 struct ocfs2_extent_rec *split_rec,
124 struct ocfs2_alloc_context *meta_ac,
125 struct ocfs2_cached_dealloc_ctxt *dealloc);
117int ocfs2_mark_extent_written(struct inode *inode, 126int ocfs2_mark_extent_written(struct inode *inode,
118 struct ocfs2_extent_tree *et, 127 struct ocfs2_extent_tree *et,
119 handle_t *handle, u32 cpos, u32 len, u32 phys, 128 handle_t *handle, u32 cpos, u32 len, u32 phys,
120 struct ocfs2_alloc_context *meta_ac, 129 struct ocfs2_alloc_context *meta_ac,
121 struct ocfs2_cached_dealloc_ctxt *dealloc); 130 struct ocfs2_cached_dealloc_ctxt *dealloc);
122int ocfs2_remove_extent(struct inode *inode, 131int ocfs2_change_extent_flag(handle_t *handle,
123 struct ocfs2_extent_tree *et, 132 struct ocfs2_extent_tree *et,
124 u32 cpos, u32 len, handle_t *handle, 133 u32 cpos, u32 len, u32 phys,
134 struct ocfs2_alloc_context *meta_ac,
135 struct ocfs2_cached_dealloc_ctxt *dealloc,
136 int new_flags, int clear_flags);
137int ocfs2_remove_extent(handle_t *handle, struct ocfs2_extent_tree *et,
138 u32 cpos, u32 len,
125 struct ocfs2_alloc_context *meta_ac, 139 struct ocfs2_alloc_context *meta_ac,
126 struct ocfs2_cached_dealloc_ctxt *dealloc); 140 struct ocfs2_cached_dealloc_ctxt *dealloc);
127int ocfs2_remove_btree_range(struct inode *inode, 141int ocfs2_remove_btree_range(struct inode *inode,
@@ -130,7 +144,6 @@ int ocfs2_remove_btree_range(struct inode *inode,
130 struct ocfs2_cached_dealloc_ctxt *dealloc); 144 struct ocfs2_cached_dealloc_ctxt *dealloc);
131 145
132int ocfs2_num_free_extents(struct ocfs2_super *osb, 146int ocfs2_num_free_extents(struct ocfs2_super *osb,
133 struct inode *inode,
134 struct ocfs2_extent_tree *et); 147 struct ocfs2_extent_tree *et);
135 148
136/* 149/*
@@ -195,6 +208,9 @@ static inline void ocfs2_init_dealloc_ctxt(struct ocfs2_cached_dealloc_ctxt *c)
195} 208}
196int ocfs2_cache_cluster_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt, 209int ocfs2_cache_cluster_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
197 u64 blkno, unsigned int bit); 210 u64 blkno, unsigned int bit);
211int ocfs2_cache_block_dealloc(struct ocfs2_cached_dealloc_ctxt *ctxt,
212 int type, int slot, u64 blkno,
213 unsigned int bit);
198static inline int ocfs2_dealloc_has_cluster(struct ocfs2_cached_dealloc_ctxt *c) 214static inline int ocfs2_dealloc_has_cluster(struct ocfs2_cached_dealloc_ctxt *c)
199{ 215{
200 return c->c_global_allocator != NULL; 216 return c->c_global_allocator != NULL;
@@ -222,8 +238,9 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
222int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh, 238int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh,
223 unsigned int start, unsigned int end, int trunc); 239 unsigned int start, unsigned int end, int trunc);
224 240
225int ocfs2_find_leaf(struct inode *inode, struct ocfs2_extent_list *root_el, 241int ocfs2_find_leaf(struct ocfs2_caching_info *ci,
226 u32 cpos, struct buffer_head **leaf_bh); 242 struct ocfs2_extent_list *root_el, u32 cpos,
243 struct buffer_head **leaf_bh);
227int ocfs2_search_extent_list(struct ocfs2_extent_list *el, u32 v_cluster); 244int ocfs2_search_extent_list(struct ocfs2_extent_list *el, u32 v_cluster);
228 245
229/* 246/*
@@ -254,4 +271,50 @@ static inline int ocfs2_is_empty_extent(struct ocfs2_extent_rec *rec)
254 return !rec->e_leaf_clusters; 271 return !rec->e_leaf_clusters;
255} 272}
256 273
274int ocfs2_grab_pages(struct inode *inode, loff_t start, loff_t end,
275 struct page **pages, int *num);
276void ocfs2_map_and_dirty_page(struct inode *inode, handle_t *handle,
277 unsigned int from, unsigned int to,
278 struct page *page, int zero, u64 *phys);
279/*
280 * Structures which describe a path through a btree, and functions to
281 * manipulate them.
282 *
283 * The idea here is to be as generic as possible with the tree
284 * manipulation code.
285 */
286struct ocfs2_path_item {
287 struct buffer_head *bh;
288 struct ocfs2_extent_list *el;
289};
290
291#define OCFS2_MAX_PATH_DEPTH 5
292
293struct ocfs2_path {
294 int p_tree_depth;
295 ocfs2_journal_access_func p_root_access;
296 struct ocfs2_path_item p_node[OCFS2_MAX_PATH_DEPTH];
297};
298
299#define path_root_bh(_path) ((_path)->p_node[0].bh)
300#define path_root_el(_path) ((_path)->p_node[0].el)
301#define path_root_access(_path)((_path)->p_root_access)
302#define path_leaf_bh(_path) ((_path)->p_node[(_path)->p_tree_depth].bh)
303#define path_leaf_el(_path) ((_path)->p_node[(_path)->p_tree_depth].el)
304#define path_num_items(_path) ((_path)->p_tree_depth + 1)
305
306void ocfs2_reinit_path(struct ocfs2_path *path, int keep_root);
307void ocfs2_free_path(struct ocfs2_path *path);
308int ocfs2_find_path(struct ocfs2_caching_info *ci,
309 struct ocfs2_path *path,
310 u32 cpos);
311struct ocfs2_path *ocfs2_new_path_from_path(struct ocfs2_path *path);
312struct ocfs2_path *ocfs2_new_path_from_et(struct ocfs2_extent_tree *et);
313int ocfs2_path_bh_journal_access(handle_t *handle,
314 struct ocfs2_caching_info *ci,
315 struct ocfs2_path *path,
316 int idx);
317int ocfs2_journal_access_path(struct ocfs2_caching_info *ci,
318 handle_t *handle,
319 struct ocfs2_path *path);
257#endif /* OCFS2_ALLOC_H */ 320#endif /* OCFS2_ALLOC_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-10-18 02:18:28 -0400