Btrfs: Hold csum mutex while reading in sums during readpages
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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parent
2dd3e67b1e
commit
6dab815743
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@ -150,7 +150,6 @@ int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
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struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
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path = btrfs_alloc_path();
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path->reada = 2;
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WARN_ON(bio->bi_vcnt <= 0);
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@ -177,6 +176,7 @@ int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
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printk("no csum found for inode %lu start "
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"%llu\n", inode->i_ino,
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(unsigned long long)offset);
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item = NULL;
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goto found;
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}
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btrfs_item_key_to_cpu(path->nodes[0], &found_key,
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@ -376,7 +376,9 @@ int btrfs_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
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if (!(rw & (1 << BIO_RW))) {
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if (!btrfs_test_opt(root, NODATASUM) &&
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!btrfs_test_flag(inode, NODATASUM)) {
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mutex_lock(&BTRFS_I(inode)->csum_mutex);
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btrfs_lookup_bio_sums(root, inode, bio);
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mutex_unlock(&BTRFS_I(inode)->csum_mutex);
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}
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goto mapit;
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}
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