btrfs: make extent_fiemap take btrfs_inode

Reviewed-by: NJohannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: NJosef Bacik <josef@toxicpanda.com>
Signed-off-by: NNikolay Borisov <nborisov@suse.com>
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/extent_io.c

@@ -4696,7 +4696,7 @@ static int emit_last_fiemap_cache(struct fiemap_extent_info *fieinfo,
 	return ret;
 }
 
-int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
+int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
 		  u64 start, u64 len)
 {
 	int ret = 0;
@@ -4707,12 +4707,12 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 	u64 last;
 	u64 last_for_get_extent = 0;
 	u64 disko = 0;
-	u64 isize = i_size_read(inode);
+	u64 isize = i_size_read(&inode->vfs_inode);
 	struct btrfs_key found_key;
 	struct extent_map *em = NULL;
 	struct extent_state *cached_state = NULL;
 	struct btrfs_path *path;
-	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_root *root = inode->root;
 	struct fiemap_cache cache = { 0 };
 	struct ulist *roots;
 	struct ulist *tmp_ulist;
@@ -4736,15 +4736,15 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		goto out_free_ulist;
 	}
 
-	start = round_down(start, btrfs_inode_sectorsize(BTRFS_I(inode)));
-	len = round_up(max, btrfs_inode_sectorsize(BTRFS_I(inode))) - start;
+	start = round_down(start, btrfs_inode_sectorsize(inode));
+	len = round_up(max, btrfs_inode_sectorsize(inode)) - start;
 
 	/*
 	 * lookup the last file extent.  We're not using i_size here
 	 * because there might be preallocation past i_size
 	 */
-	ret = btrfs_lookup_file_extent(NULL, root, path,
-			btrfs_ino(BTRFS_I(inode)), -1, 0);
+	ret = btrfs_lookup_file_extent(NULL, root, path, btrfs_ino(inode), -1,
+				       0);
 	if (ret < 0) {
 		goto out_free_ulist;
 	} else {
@@ -4758,7 +4758,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 	found_type = found_key.type;
 
 	/* No extents, but there might be delalloc bits */
-	if (found_key.objectid != btrfs_ino(BTRFS_I(inode)) ||
+	if (found_key.objectid != btrfs_ino(inode) ||
 	    found_type != BTRFS_EXTENT_DATA_KEY) {
 		/* have to trust i_size as the end */
 		last = (u64)-1;
@@ -4784,10 +4784,10 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		last_for_get_extent = isize;
 	}
 
-	lock_extent_bits(&BTRFS_I(inode)->io_tree, start, start + len - 1,
+	lock_extent_bits(&inode->io_tree, start, start + len - 1,
 			 &cached_state);
 
-	em = get_extent_skip_holes(BTRFS_I(inode), start, last_for_get_extent);
+	em = get_extent_skip_holes(inode, start, last_for_get_extent);
 	if (!em)
 		goto out;
 	if (IS_ERR(em)) {
@@ -4853,8 +4853,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 			 * then we're just getting a count and we can skip the
 			 * lookup stuff.
 			 */
-			ret = btrfs_check_shared(root,
-						 btrfs_ino(BTRFS_I(inode)),
+			ret = btrfs_check_shared(root, btrfs_ino(inode),
 						 bytenr, roots, tmp_ulist);
 			if (ret < 0)
 				goto out_free;
@@ -4876,8 +4875,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		}
 
 		/* now scan forward to see if this is really the last extent. */
-		em = get_extent_skip_holes(BTRFS_I(inode), off,
-					   last_for_get_extent);
+		em = get_extent_skip_holes(inode, off, last_for_get_extent);
 		if (IS_ERR(em)) {
 			ret = PTR_ERR(em);
 			goto out;
@@ -4899,7 +4897,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 		ret = emit_last_fiemap_cache(fieinfo, &cache);
 	free_extent_map(em);
 out:
-	unlock_extent_cached(&BTRFS_I(inode)->io_tree, start, start + len - 1,
+	unlock_extent_cached(&inode->io_tree, start, start + len - 1,
 			     &cached_state);
 
 out_free_ulist:

fs/btrfs/extent_io.h

@@ -203,7 +203,7 @@ int extent_writepages(struct address_space *mapping,
 int btree_write_cache_pages(struct address_space *mapping,
 			    struct writeback_control *wbc);
 void extent_readahead(struct readahead_control *rac);
-int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
+int extent_fiemap(struct btrfs_inode *inode, struct fiemap_extent_info *fieinfo,
 		  u64 start, u64 len);
 void set_page_extent_mapped(struct page *page);
 

fs/btrfs/inode.c

@@ -8035,7 +8035,7 @@ static int btrfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
 	if (ret)
 		return ret;
 
-	return extent_fiemap(inode, fieinfo, start, len);
+	return extent_fiemap(BTRFS_I(inode), fieinfo, start, len);
 }
 
 int btrfs_readpage(struct file *file, struct page *page)