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Btrfs: Keep extent mappings in ram until pending ordered extents are done

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It was possible for stale mappings from disk to be used instead of the
new pending ordered extent.  This adds a flag to the extent map struct
to keep it pinned until the pending ordered extent is actually on disk.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-07-18 12:01:11 -04:00
parent 211f90e68b
commit 7f3c74fb83
6 changed files with 48 additions and 20 deletions
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5
fs/btrfs/file-item.c
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@ -192,7 +192,6 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
(char *)&sector_sum->sum);
sector_sum->offset = page_offset(bvec->bv_page) +
bvec->bv_offset;
sector_sum++;
bio_index++;
total_bytes += bvec->bv_len;
@ -201,9 +200,6 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
}
btrfs_add_ordered_sum(inode, ordered, sums);
btrfs_put_ordered_extent(ordered);
if (total_bytes != bio->bi_size) {
printk("warning, total bytes %lu bio size %u\n", total_bytes, bio->bi_size);
}
return 0;
}
@ -372,6 +368,7 @@ next_sector:
write_extent_buffer(leaf, &sector_sum->sum,
(unsigned long)item, BTRFS_CRC32_SIZE);
}
total_bytes += root->sectorsize;
sector_sum++;
if (total_bytes < sums->len) {