file-item.c (143bede527b054a271053f41bfaca2b57baa9408) file-item.c (0678b61851b510ba68341dff59cd9b47e1712e91)
1/*
2 * Copyright (C) 2007 Oracle. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,

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279 struct list_head *list, int search_commit)
280{
281 struct btrfs_key key;
282 struct btrfs_path *path;
283 struct extent_buffer *leaf;
284 struct btrfs_ordered_sum *sums;
285 struct btrfs_sector_sum *sector_sum;
286 struct btrfs_csum_item *item;
1/*
2 * Copyright (C) 2007 Oracle. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,

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279 struct list_head *list, int search_commit)
280{
281 struct btrfs_key key;
282 struct btrfs_path *path;
283 struct extent_buffer *leaf;
284 struct btrfs_ordered_sum *sums;
285 struct btrfs_sector_sum *sector_sum;
286 struct btrfs_csum_item *item;
287 LIST_HEAD(tmplist);
287 unsigned long offset;
288 int ret;
289 size_t size;
290 u64 csum_end;
291 u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
292
293 path = btrfs_alloc_path();
294 if (!path)

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353 csum_end = min(csum_end, end + 1);
354 item = btrfs_item_ptr(path->nodes[0], path->slots[0],
355 struct btrfs_csum_item);
356 while (start < csum_end) {
357 size = min_t(size_t, csum_end - start,
358 MAX_ORDERED_SUM_BYTES(root));
359 sums = kzalloc(btrfs_ordered_sum_size(root, size),
360 GFP_NOFS);
288 unsigned long offset;
289 int ret;
290 size_t size;
291 u64 csum_end;
292 u16 csum_size = btrfs_super_csum_size(root->fs_info->super_copy);
293
294 path = btrfs_alloc_path();
295 if (!path)

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354 csum_end = min(csum_end, end + 1);
355 item = btrfs_item_ptr(path->nodes[0], path->slots[0],
356 struct btrfs_csum_item);
357 while (start < csum_end) {
358 size = min_t(size_t, csum_end - start,
359 MAX_ORDERED_SUM_BYTES(root));
360 sums = kzalloc(btrfs_ordered_sum_size(root, size),
361 GFP_NOFS);
361 BUG_ON(!sums);
362 if (!sums) {
363 ret = -ENOMEM;
364 goto fail;
365 }
362
363 sector_sum = sums->sums;
364 sums->bytenr = start;
365 sums->len = size;
366
367 offset = (start - key.offset) >>
368 root->fs_info->sb->s_blocksize_bits;
369 offset *= csum_size;

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375 offset, csum_size);
376 sector_sum->bytenr = start;
377
378 size -= root->sectorsize;
379 start += root->sectorsize;
380 offset += csum_size;
381 sector_sum++;
382 }
366
367 sector_sum = sums->sums;
368 sums->bytenr = start;
369 sums->len = size;
370
371 offset = (start - key.offset) >>
372 root->fs_info->sb->s_blocksize_bits;
373 offset *= csum_size;

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379 offset, csum_size);
380 sector_sum->bytenr = start;
381
382 size -= root->sectorsize;
383 start += root->sectorsize;
384 offset += csum_size;
385 sector_sum++;
386 }
383 list_add_tail(&sums->list, list);
387 list_add_tail(&sums->list, &tmplist);
384 }
385 path->slots[0]++;
386 }
387 ret = 0;
388fail:
388 }
389 path->slots[0]++;
390 }
391 ret = 0;
392fail:
393 while (ret < 0 && !list_empty(&tmplist)) {
394 sums = list_entry(&tmplist, struct btrfs_ordered_sum, list);
395 list_del(&sums->list);
396 kfree(sums);
397 }
398 list_splice_tail(&tmplist, list);
399
389 btrfs_free_path(path);
390 return ret;
391}
392
393int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
394 struct bio *bio, u64 file_start, int contig)
395{
396 struct btrfs_ordered_sum *sums;

--- 449 unchanged lines hidden --- 		400 btrfs_free_path(path);
401 return ret;
402}
403
404int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
405 struct bio *bio, u64 file_start, int contig)
406{
407 struct btrfs_ordered_sum *sums;

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