Merge tag 'nfs-for-6.9-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Bugfixes:
   - Fix for an Oops in the NFSv4.2 listxattr handler
   - Correct an incorrect buffer size in listxattr
   - Fix for an Oops in the pNFS flexfiles layout
   - Fix a refcount leak in NFS O_DIRECT writes
   - Fix missing locking in NFS O_DIRECT
   - Avoid an infinite loop in pnfs_update_layout
   - Fix an overflow in the RPC waitqueue queue length counter
   - Ensure that pNFS I/O is also protected by TLS when xprtsec is
     specified by the mount options
   - Fix a leaked folio lock in the netfs read code
   - Fix a potential deadlock in fscache
   - Allow setting the fscache uniquifier in NFSv4
   - Fix an off by one in root_nfs_cat()
   - Fix another off by one in rpc_sockaddr2uaddr()
   - nfs4_do_open() can incorrectly trigger state recovery
   - Various fixes for connection shutdown

  Features and cleanups:
   - Ensure that containers only see their own RPC and NFS stats
   - Enable nconnect for RDMA
   - Remove dead code from nfs_writepage_locked()
   - Various tracepoint additions to track EXCHANGE_ID, GETDEVICEINFO,
     and mount options"

* tag 'nfs-for-6.9-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (29 commits)
  nfs: fix panic when nfs4_ff_layout_prepare_ds() fails
  NFS: trace the uniquifier of fscache
  NFS: Read unlock folio on nfs_page_create_from_folio() error
  NFS: remove unused variable nfs_rpcstat
  nfs: fix UAF in direct writes
  nfs: properly protect nfs_direct_req fields
  NFS: enable nconnect for RDMA
  NFSv4: nfs4_do_open() is incorrectly triggering state recovery
  NFS: avoid infinite loop in pnfs_update_layout.
  NFS: remove sync_mode test from nfs_writepage_locked()
  NFSv4.1/pnfs: fix NFS with TLS in pnfs
  NFS: Fix an off by one in root_nfs_cat()
  nfs: make the rpc_stat per net namespace
  nfs: expose /proc/net/sunrpc/nfs in net namespaces
  sunrpc: add a struct rpc_stats arg to rpc_create_args
  nfs: remove unused NFS_CALL macro
  NFSv4.1: add tracepoint to trunked nfs4_exchange_id calls
  NFS: Fix nfs_netfs_issue_read() xarray locking for writeback interrupt
  SUNRPC: increase size of rpc_wait_queue.qlen from unsigned short to unsigned int
  nfs: fix regression in handling of fsc= option in NFSv4
  ...

1 files changed, 2 insertions, 7 deletions

diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
index 2d1bfee225c3..ddc1ee031955 100644
--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -301,11 +301,11 @@ static void nfs_netfs_issue_read(struct netfs_io_subrequest *sreq)
 	struct inode *inode = sreq->rreq->inode;
 	struct nfs_open_context *ctx = sreq->rreq->netfs_priv;
 	struct page *page;
+	unsigned long idx;
 	int err;
 	pgoff_t start = (sreq->start + sreq->transferred) >> PAGE_SHIFT;
 	pgoff_t last = ((sreq->start + sreq->len -
 			 sreq->transferred - 1) >> PAGE_SHIFT);
-	XA_STATE(xas, &sreq->rreq->mapping->i_pages, start);
 
 	nfs_pageio_init_read(&pgio, inode, false,
 			     &nfs_async_read_completion_ops);
@@ -316,19 +316,14 @@ static void nfs_netfs_issue_read(struct netfs_io_subrequest *sreq)
 
 	pgio.pg_netfs = netfs; /* used in completion */
 
-	xas_lock(&xas);
-	xas_for_each(&xas, page, last) {
+	xa_for_each_range(&sreq->rreq->mapping->i_pages, idx, page, start, last) {
 		/* nfs_read_add_folio() may schedule() due to pNFS layout and other RPCs  */
-		xas_pause(&xas);
-		xas_unlock(&xas);
 		err = nfs_read_add_folio(&pgio, ctx, page_folio(page));
 		if (err < 0) {
 			netfs->error = err;
 			goto out;
 		}
-		xas_lock(&xas);
 	}
-	xas_unlock(&xas);
 out:
 	nfs_pageio_complete_read(&pgio);
 	nfs_netfs_put(netfs);