md: fix use-after-free bug when dropping an rdev from an md array

[pandora-kernel.git] / fs / ocfs2 / alloc.h

diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h
index fbcb593..42ff94b 100644 (file)
--- a/fs/ocfs2/alloc.h
+++ b/fs/ocfs2/alloc.h
@@ -34,7 +34,17 @@ int ocfs2_insert_extent(struct ocfs2_super *osb,
                        u32 cpos,
                        u64 start_blk,
                        u32 new_clusters,
+                       u8 flags,
                        struct ocfs2_alloc_context *meta_ac);
+struct ocfs2_cached_dealloc_ctxt;
+int ocfs2_mark_extent_written(struct inode *inode, struct buffer_head *di_bh,
+                             handle_t *handle, u32 cpos, u32 len, u32 phys,
+                             struct ocfs2_alloc_context *meta_ac,
+                             struct ocfs2_cached_dealloc_ctxt *dealloc);
+int ocfs2_remove_extent(struct inode *inode, struct buffer_head *di_bh,
+                       u32 cpos, u32 len, handle_t *handle,
+                       struct ocfs2_alloc_context *meta_ac,
+                       struct ocfs2_cached_dealloc_ctxt *dealloc);
 int ocfs2_num_free_extents(struct ocfs2_super *osb,
                           struct inode *inode,
                           struct ocfs2_dinode *fe);
@@ -52,6 +62,11 @@ static inline int ocfs2_extend_meta_needed(struct ocfs2_dinode *fe)
        return le16_to_cpu(fe->id2.i_list.l_tree_depth) + 2;
 }
 
+void ocfs2_dinode_new_extent_list(struct inode *inode, struct ocfs2_dinode *di);
+void ocfs2_set_inode_data_inline(struct inode *inode, struct ocfs2_dinode *di);
+int ocfs2_convert_inline_data_to_extents(struct inode *inode,
+                                        struct buffer_head *di_bh);
+
 int ocfs2_truncate_log_init(struct ocfs2_super *osb);
 void ocfs2_truncate_log_shutdown(struct ocfs2_super *osb);
 void ocfs2_schedule_truncate_log_flush(struct ocfs2_super *osb,
@@ -62,17 +77,41 @@ int ocfs2_begin_truncate_log_recovery(struct ocfs2_super *osb,
                                      struct ocfs2_dinode **tl_copy);
 int ocfs2_complete_truncate_log_recovery(struct ocfs2_super *osb,
                                         struct ocfs2_dinode *tl_copy);
+int ocfs2_truncate_log_needs_flush(struct ocfs2_super *osb);
+int ocfs2_truncate_log_append(struct ocfs2_super *osb,
+                             handle_t *handle,
+                             u64 start_blk,
+                             unsigned int num_clusters);
+int __ocfs2_flush_truncate_log(struct ocfs2_super *osb);
+
+/*
+ * Process local structure which describes the block unlinks done
+ * during an operation. This is populated via
+ * ocfs2_cache_block_dealloc().
+ *
+ * ocfs2_run_deallocs() should be called after the potentially
+ * de-allocating routines. No journal handles should be open, and most
+ * locks should have been dropped.
+ */
+struct ocfs2_cached_dealloc_ctxt {
+       struct ocfs2_per_slot_free_list         *c_first_suballocator;
+};
+static inline void ocfs2_init_dealloc_ctxt(struct ocfs2_cached_dealloc_ctxt *c)
+{
+       c->c_first_suballocator = NULL;
+}
+int ocfs2_run_deallocs(struct ocfs2_super *osb,
+                      struct ocfs2_cached_dealloc_ctxt *ctxt);
 
 struct ocfs2_truncate_context {
-       struct inode *tc_ext_alloc_inode;
-       struct buffer_head *tc_ext_alloc_bh;
+       struct ocfs2_cached_dealloc_ctxt tc_dealloc;
        int tc_ext_alloc_locked; /* is it cluster locked? */
        /* these get destroyed once it's passed to ocfs2_commit_truncate. */
        struct buffer_head *tc_last_eb_bh;
 };
 
-int ocfs2_zero_tail_for_truncate(struct inode *inode, handle_t *handle,
-                                u64 new_i_size);
+int ocfs2_zero_range_for_truncate(struct inode *inode, handle_t *handle,
+                                 u64 range_start, u64 range_end);
 int ocfs2_prepare_truncate(struct ocfs2_super *osb,
                           struct inode *inode,
                           struct buffer_head *fe_bh,
@@ -81,9 +120,12 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb,
                          struct inode *inode,
                          struct buffer_head *fe_bh,
                          struct ocfs2_truncate_context *tc);
+int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh,
+                         unsigned int start, unsigned int end, int trunc);
 
 int ocfs2_find_leaf(struct inode *inode, struct ocfs2_extent_list *root_el,
                    u32 cpos, struct buffer_head **leaf_bh);
+int ocfs2_search_extent_list(struct ocfs2_extent_list *el, u32 v_cluster);
 
 /*
  * Helper function to look at the # of clusters in an extent record.