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Btrfs: Make sure bio pages are adjacent during bulk csumming

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2008-02-20 15:44:32 -05:00
parent 6885f308b5
commit 2e1a992e31
1 changed files with 4 additions and 2 deletions
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6
fs/btrfs/file-item.c
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@ -161,7 +161,6 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
unsigned long map_len; unsigned long map_len;
unsigned long map_start; unsigned long map_start;
path = btrfs_alloc_path(); path = btrfs_alloc_path();
BUG_ON(!path); BUG_ON(!path);
again: again:
@ -315,8 +314,11 @@ next_bvec:
if (bio_index < bio->bi_vcnt) { if (bio_index < bio->bi_vcnt) {
item = (struct btrfs_csum_item *)((char *)item + item = (struct btrfs_csum_item *)((char *)item +
BTRFS_CRC32_SIZE); BTRFS_CRC32_SIZE);
if (item < item_end) if (item < item_end && offset + PAGE_CACHE_SIZE ==
page_offset(bvec->bv_page)) {
offset = page_offset(bvec->bv_page);
goto next_bvec; goto next_bvec;
}
} }
if (eb_token) { if (eb_token) {
unmap_extent_buffer(leaf, eb_token, KM_IRQ1); unmap_extent_buffer(leaf, eb_token, KM_IRQ1);