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Commit eb20978f authored by Chris Mason's avatar Chris Mason
Browse files

Btrfs: Use KM_USERN instead of KM_IRQ during data summing 



Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 55d47414

fs/btrfs/file-item.c

+5 −5
Original line number Diff line number Diff line
@@ -278,11 +278,11 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, 
				      btrfs_item_size_nr(leaf, path->slots[0]));

	eb_token = NULL;

next_bvec:

	data = kmap_atomic(bvec->bv_page, KM_IRQ0);

	data = kmap_atomic(bvec->bv_page, KM_USER0);

	csum_result = ~(u32)0;

	csum_result = btrfs_csum_data(root, data + bvec->bv_offset,

				      csum_result, bvec->bv_len);

	kunmap_atomic(data, KM_IRQ0);

	kunmap_atomic(data, KM_USER0);

	btrfs_csum_final(csum_result, (char *)&csum_result);

	if (csum_result == 0) {

		printk("csum result is 0 for inode %lu offset %Lu\n", inode->i_ino, offset);
@@ -293,12 +293,12 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, 
		int err;



		if (eb_token)

			unmap_extent_buffer(leaf, eb_token, KM_IRQ1);

			unmap_extent_buffer(leaf, eb_token, KM_USER1);

		eb_token = NULL;

		err = map_private_extent_buffer(leaf, (unsigned long)item,

						BTRFS_CRC32_SIZE,

						&eb_token, &eb_map,

						&map_start, &map_len, KM_IRQ1);

						&map_start, &map_len, KM_USER1);

		if (err)

			eb_token = NULL;

	}
@@ -321,7 +321,7 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, 
		}

	}

	if (eb_token) {

		unmap_extent_buffer(leaf, eb_token, KM_IRQ1);

		unmap_extent_buffer(leaf, eb_token, KM_USER1);

		eb_token = NULL;

	}

	btrfs_mark_buffer_dirty(path->nodes[0]);