Switch open_exec() and sys_uselib() to do_open_filp()

[safe/jmp/linux-2.6] / fs / btrfs / extent_io.h

diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 283110e..5bc20ab 100644 (file)
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -16,11 +16,17 @@
 #define EXTENT_ORDERED (1 << 9)
 #define EXTENT_ORDERED_METADATA (1 << 10)
 #define EXTENT_BOUNDARY (1 << 11)
+#define EXTENT_NODATASUM (1 << 12)
 #define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK)
 
 /* flags for bio submission */
 #define EXTENT_BIO_COMPRESSED 1
 
+/* these are bit numbers for test/set bit */
+#define EXTENT_BUFFER_UPTODATE 0
+#define EXTENT_BUFFER_BLOCKING 1
+#define EXTENT_BUFFER_DIRTY 2
+
 /*
  * page->private values.  Every page that is controlled by the extent
  * map has page->private set to one.
@@ -35,7 +41,8 @@ typedef       int (extent_submit_bio_hook_t)(struct inode *inode, int rw,
                                       unsigned long bio_flags);
 struct extent_io_ops {
        int (*fill_delalloc)(struct inode *inode, struct page *locked_page,
-                            u64 start, u64 end, int *page_started);
+                            u64 start, u64 end, int *page_started,
+                            unsigned long *nr_written);
        int (*writepage_start_hook)(struct page *page, u64 start, u64 end);
        int (*writepage_io_hook)(struct page *page, u64 start, u64 end);
        extent_submit_bio_hook_t *submit_bio_hook;
@@ -93,11 +100,19 @@ struct extent_buffer {
        unsigned long map_start;
        unsigned long map_len;
        struct page *first_page;
+       unsigned long bflags;
        atomic_t refs;
-       int flags;
        struct list_head leak_list;
        struct rb_node rb_node;
-       struct mutex mutex;
+
+       /* the spinlock is used to protect most operations */
+       spinlock_t lock;
+
+       /*
+        * when we keep the lock held while blocking, waiters go onto
+        * the wq
+        */
+       wait_queue_head_t lock_wq;
 };
 
 struct extent_map_tree;
@@ -172,6 +187,9 @@ int extent_invalidatepage(struct extent_io_tree *tree,
 int extent_write_full_page(struct extent_io_tree *tree, struct page *page,
                          get_extent_t *get_extent,
                          struct writeback_control *wbc);
+int extent_write_locked_range(struct extent_io_tree *tree, struct inode *inode,
+                             u64 start, u64 end, get_extent_t *get_extent,
+                             int mode);
 int extent_writepages(struct extent_io_tree *tree,
                      struct address_space *mapping,
                      get_extent_t *get_extent,
@@ -188,6 +206,8 @@ int extent_commit_write(struct extent_io_tree *tree,
                        unsigned from, unsigned to);
 sector_t extent_bmap(struct address_space *mapping, sector_t iblock,
                get_extent_t *get_extent);
+int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
+               __u64 start, __u64 len, get_extent_t *get_extent);
 int set_range_dirty(struct extent_io_tree *tree, u64 start, u64 end);
 int set_state_private(struct extent_io_tree *tree, u64 start, u64 private);
 int get_state_private(struct extent_io_tree *tree, u64 start, u64 *private);
@@ -235,6 +255,8 @@ int clear_extent_buffer_dirty(struct extent_io_tree *tree,
                              struct extent_buffer *eb);
 int set_extent_buffer_dirty(struct extent_io_tree *tree,
                             struct extent_buffer *eb);
+int test_extent_buffer_dirty(struct extent_io_tree *tree,
+                            struct extent_buffer *eb);
 int set_extent_buffer_uptodate(struct extent_io_tree *tree,
                               struct extent_buffer *eb);
 int clear_extent_buffer_uptodate(struct extent_io_tree *tree,
@@ -256,6 +278,9 @@ int extent_range_uptodate(struct extent_io_tree *tree,
 int extent_clear_unlock_delalloc(struct inode *inode,
                                struct extent_io_tree *tree,
                                u64 start, u64 end, struct page *locked_page,
-                               int clear_dirty, int set_writeback,
-                               int clear_writeback);
+                               int unlock_page,
+                               int clear_unlock,
+                               int clear_delalloc, int clear_dirty,
+                               int set_writeback,
+                               int end_writeback);
 #endif