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-rw-r--r--fs/btrfs/file.c89
1 files changed, 6 insertions, 83 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 482f8db2cfd0..1d51dc38bb49 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -272,83 +272,6 @@ int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
272 return 0; 272 return 0;
273} 273}
274 274
275int btrfs_check_file(struct btrfs_root *root, struct inode *inode)
276{
277 return 0;
278#if 0
279 struct btrfs_path *path;
280 struct btrfs_key found_key;
281 struct extent_buffer *leaf;
282 struct btrfs_file_extent_item *extent;
283 u64 last_offset = 0;
284 int nritems;
285 int slot;
286 int found_type;
287 int ret;
288 int err = 0;
289 u64 extent_end = 0;
290
291 path = btrfs_alloc_path();
292 ret = btrfs_lookup_file_extent(NULL, root, path, inode->i_ino,
293 last_offset, 0);
294 while (1) {
295 nritems = btrfs_header_nritems(path->nodes[0]);
296 if (path->slots[0] >= nritems) {
297 ret = btrfs_next_leaf(root, path);
298 if (ret)
299 goto out;
300 nritems = btrfs_header_nritems(path->nodes[0]);
301 }
302 slot = path->slots[0];
303 leaf = path->nodes[0];
304 btrfs_item_key_to_cpu(leaf, &found_key, slot);
305 if (found_key.objectid != inode->i_ino)
306 break;
307 if (found_key.type != BTRFS_EXTENT_DATA_KEY)
308 goto out;
309
310 if (found_key.offset < last_offset) {
311 WARN_ON(1);
312 btrfs_print_leaf(root, leaf);
313 printk(KERN_ERR "inode %lu found offset %llu "
314 "expected %llu\n", inode->i_ino,
315 (unsigned long long)found_key.offset,
316 (unsigned long long)last_offset);
317 err = 1;
318 goto out;
319 }
320 extent = btrfs_item_ptr(leaf, slot,
321 struct btrfs_file_extent_item);
322 found_type = btrfs_file_extent_type(leaf, extent);
323 if (found_type == BTRFS_FILE_EXTENT_REG) {
324 extent_end = found_key.offset +
325 btrfs_file_extent_num_bytes(leaf, extent);
326 } else if (found_type == BTRFS_FILE_EXTENT_INLINE) {
327 struct btrfs_item *item;
328 item = btrfs_item_nr(leaf, slot);
329 extent_end = found_key.offset +
330 btrfs_file_extent_inline_len(leaf, extent);
331 extent_end = (extent_end + root->sectorsize - 1) &
332 ~((u64)root->sectorsize - 1);
333 }
334 last_offset = extent_end;
335 path->slots[0]++;
336 }
337 if (0 && last_offset < inode->i_size) {
338 WARN_ON(1);
339 btrfs_print_leaf(root, leaf);
340 printk(KERN_ERR "inode %lu found offset %llu size %llu\n",
341 inode->i_ino, (unsigned long long)last_offset,
342 (unsigned long long)inode->i_size);
343 err = 1;
344
345 }
346out:
347 btrfs_free_path(path);
348 return err;
349#endif
350}
351
352/* 275/*
353 * this is very complex, but the basic idea is to drop all extents 276 * this is very complex, but the basic idea is to drop all extents
354 * in the range start - end. hint_block is filled in with a block number 277 * in the range start - end. hint_block is filled in with a block number
@@ -363,15 +286,16 @@ out:
363 */ 286 */
364noinline int btrfs_drop_extents(struct btrfs_trans_handle *trans, 287noinline int btrfs_drop_extents(struct btrfs_trans_handle *trans,
365 struct btrfs_root *root, struct inode *inode, 288 struct btrfs_root *root, struct inode *inode,
366 u64 start, u64 end, u64 inline_limit, u64 *hint_byte) 289 u64 start, u64 end, u64 locked_end,
290 u64 inline_limit, u64 *hint_byte)
367{ 291{
368 u64 extent_end = 0; 292 u64 extent_end = 0;
369 u64 locked_end = end;
370 u64 search_start = start; 293 u64 search_start = start;
371 u64 leaf_start; 294 u64 leaf_start;
372 u64 ram_bytes = 0; 295 u64 ram_bytes = 0;
373 u64 orig_parent = 0; 296 u64 orig_parent = 0;
374 u64 disk_bytenr = 0; 297 u64 disk_bytenr = 0;
298 u64 orig_locked_end = locked_end;
375 u8 compression; 299 u8 compression;
376 u8 encryption; 300 u8 encryption;
377 u16 other_encoding = 0; 301 u16 other_encoding = 0;
@@ -684,11 +608,10 @@ next_slot:
684 } 608 }
685out: 609out:
686 btrfs_free_path(path); 610 btrfs_free_path(path);
687 if (locked_end > end) { 611 if (locked_end > orig_locked_end) {
688 unlock_extent(&BTRFS_I(inode)->io_tree, end, locked_end - 1, 612 unlock_extent(&BTRFS_I(inode)->io_tree, orig_locked_end,
689 GFP_NOFS); 613 locked_end - 1, GFP_NOFS);
690 } 614 }
691 btrfs_check_file(root, inode);
692 return ret; 615 return ret;
693} 616}
694 617