ceph: don't use writeback_control in writepages completion
The ->writepages writeback_control is not still valid in the writepages
completion. We were touching it solely to adjust pages_skipped when there
was a writeback error (EIO, ENOSPC, EPERM due to bad osd credentials),
causing an oops in the writeback code shortly thereafter. Updating
pages_skipped on error isn't correct anyway, so let's just rip out this
(clearly broken) code to pass the wbc to the completion.
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 4b42c2b..a9005d8 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -504,7 +504,6 @@
int i;
struct ceph_snap_context *snapc = req->r_snapc;
struct address_space *mapping = inode->i_mapping;
- struct writeback_control *wbc = req->r_wbc;
__s32 rc = -EIO;
u64 bytes = 0;
struct ceph_client *client = ceph_inode_to_client(inode);
@@ -546,10 +545,6 @@
clear_bdi_congested(&client->backing_dev_info,
BLK_RW_ASYNC);
- if (i >= wrote) {
- dout("inode %p skipping page %p\n", inode, page);
- wbc->pages_skipped++;
- }
ceph_put_snap_context((void *)page->private);
page->private = 0;
ClearPagePrivate(page);
@@ -799,7 +794,6 @@
alloc_page_vec(client, req);
req->r_callback = writepages_finish;
req->r_inode = inode;
- req->r_wbc = wbc;
}
/* note position of first page in pvec */
diff --git a/fs/ceph/osd_client.h b/fs/ceph/osd_client.h
index b075991..c5191d6 100644
--- a/fs/ceph/osd_client.h
+++ b/fs/ceph/osd_client.h
@@ -66,7 +66,6 @@
struct list_head r_unsafe_item;
struct inode *r_inode; /* for use by callbacks */
- struct writeback_control *r_wbc; /* ditto */
char r_oid[40]; /* object name */
int r_oid_len;