NFS: Don't clear PG_writeback until after we've processed unstable writes
Ensure that we don't release the PG_writeback lock until after the page has
either been redirtied, or queued on the nfs_inode 'commit' list.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 3ed4feb..8e94246 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -920,8 +920,8 @@
list_del(&data->pages);
nfs_writedata_release(data);
}
- nfs_end_page_writeback(req->wb_page);
nfs_redirty_request(req);
+ nfs_end_page_writeback(req->wb_page);
nfs_clear_page_writeback(req);
return -ENOMEM;
}
@@ -966,8 +966,8 @@
while (!list_empty(head)) {
struct nfs_page *req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
- nfs_end_page_writeback(req->wb_page);
nfs_redirty_request(req);
+ nfs_end_page_writeback(req->wb_page);
nfs_clear_page_writeback(req);
}
return -ENOMEM;
@@ -1002,8 +1002,8 @@
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
- nfs_end_page_writeback(req->wb_page);
nfs_redirty_request(req);
+ nfs_end_page_writeback(req->wb_page);
nfs_clear_page_writeback(req);
}
return error;