Commit e58dd74b authored Jan 22, 2013 by Josef Bacik

Btrfs: put csums on the right ordered extent

I noticed a WARN_ON going off when adding csums because we were going over
the amount of csum bytes that should have been allowed for an ordered
extent. This is a leftover from when we used to hold the csums privately
for direct io, but now we use the normal ordered sum stuff so we need to
make sure and check if we've moved on to another extent so that the csums
are added to the right extent. Without this we could end up with csums for
bytenrs that don't have extents to cover them yet. Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>

parent 192000dd

fs/btrfs/file-item.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -460,8 +460,8 @@ int btrfs_csum_one_bio(struct btrfs_root root, struct inode inode,
		if (!contig)
		offset = page_offset(bvec->bv_page) + bvec->bv_offset;

		if (!contig && (offset >= ordered->file_offset + ordered->len \|\|
		offset < ordered->file_offset)) {
		if (offset >= ordered->file_offset + ordered->len \|\|
		offset < ordered->file_offset) {
		unsigned long bytes_left;
		sums->len = this_sum_bytes;
		this_sum_bytes = 0;

Admin message