The NFS read code can trigger writeback while holding the page lock.
If an error then triggers a call to nfs_write_error_remove_page(),
we can deadlock.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfs/write.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 9198a23bb58b..64cf6a340ba6 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -584,9 +584,8 @@ nfs_lock_and_join_requests(struct page *page)
static void nfs_write_error_remove_page(struct nfs_page *req)
{
+ SetPageError(req->wb_page);
nfs_end_page_writeback(req);
- generic_error_remove_page(page_file_mapping(req->wb_page),
- req->wb_page);
nfs_release_request(req);
}
--
2.20.1
