Btrfs: Make sure bio pages are adjacent during bulk csumming
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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@ -161,7 +161,6 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
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unsigned long map_len;
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unsigned long map_start;
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path = btrfs_alloc_path();
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BUG_ON(!path);
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again:
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@ -315,8 +314,11 @@ next_bvec:
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if (bio_index < bio->bi_vcnt) {
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item = (struct btrfs_csum_item *)((char *)item +
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BTRFS_CRC32_SIZE);
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if (item < item_end)
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if (item < item_end && offset + PAGE_CACHE_SIZE ==
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page_offset(bvec->bv_page)) {
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offset = page_offset(bvec->bv_page);
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goto next_bvec;
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}
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}
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if (eb_token) {
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unmap_extent_buffer(leaf, eb_token, KM_IRQ1);
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