commit ed98b56a6393c5e150fd5095b9eb7fd7d3cfb041
author Chris Mason <chris.mason@oracle.com> Tue Jul 22 23:06:42 2008 -0400
committer Chris Mason <chris.mason@oracle.com> Thu Sep 25 11:04:05 2008 -0400
tree 1e69d882a08d089d083132b2b10fcf385d857620
parent c286ac48ed7aaf53586f575af6053ae2a0f8554a

Btrfs: Take the csum mutex while reading checksums

Signed-off-by: Chris Mason <chris.mason@oracle.com>

fs/btrfs/file-item.c

diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 45127e4..afe42d0 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -152,7 +152,7 @@
 	if (!sums)
 		return -ENOMEM;
 
-	sector_sum = &sums->sums;
+	sector_sum = sums->sums;
 	sums->file_offset = page_offset(bvec->bv_page) + bvec->bv_offset;
 	sums->len = bio->bi_size;
 	INIT_LIST_HEAD(&sums->list);
@@ -174,7 +174,7 @@
 			sums = kzalloc(btrfs_ordered_sum_size(root, bytes_left),
 				       GFP_NOFS);
 			BUG_ON(!sums);
-			sector_sum = &sums->sums;
+			sector_sum = sums->sums;
 			sums->len = bytes_left;
 			sums->file_offset = offset;
 			ordered = btrfs_lookup_ordered_extent(inode,
@@ -193,12 +193,14 @@
 				 (char *)&sector_sum->sum);
 		sector_sum->offset = page_offset(bvec->bv_page) +
 			bvec->bv_offset;
+
 		sector_sum++;
 		bio_index++;
 		total_bytes += bvec->bv_len;
 		this_sum_bytes += bvec->bv_len;
 		bvec++;
 	}
+	this_sum_bytes = 0;
 	btrfs_add_ordered_sum(inode, ordered, sums);
 	btrfs_put_ordered_extent(ordered);
 	return 0;
@@ -231,7 +233,7 @@
 
 	path = btrfs_alloc_path();
 	BUG_ON(!path);
-	sector_sum = &sums->sums;
+	sector_sum = sums->sums;
 again:
 	next_offset = (u64)-1;
 	found_next = 0;