Merge tag '9p-for-7.2-rc1' of https://github.com/martinetd/linux

Pull 9p updates from Dominique Martinet:
 "Asides of the avalanche of LLM-driven fixes, there are a couple of big
  changes this cycle:

   - negative dentry and symlink cache

   - a way out of the unkillable "io_wait_event_killable" (because it
     looped around waiting for the request flush to come back from
     server; this has been bugging syzcaller folks since forever): I'm
     still not 100% sure about this patch, but I think it's as good as
     we'll ever get, and will keep testing a bit further in the coming
     weeks

  The rest is more noisy than usual, but shouldn't cause any trouble"

* tag '9p-for-7.2-rc1' of https://github.com/martinetd/linux:
  9p: Add missing read barrier in virtio zero-copy path
  net/9p: Replace strlen() strcpy() pair with strscpy()
  9p: skip nlink update in cacheless mode to fix WARN_ON
  net/9p: fix race condition on rdma->state in trans_rdma.c
  9p: v9fs_file_do_lock: replace WARN_ONCE with p9_debug
  9p: Enable symlink caching in page cache
  9p: Set default negative dentry retention time for cache=loose
  9p: Add mount option for negative dentry cache retention
  9p: Cache negative dentries for lookup performance
  9p: avoid returning ERR_PTR(0) from mkdir operations
  9p: avoid putting oldfid in p9_client_walk() error path
  net/9p: fix infinite loop in p9_client_rpc on fatal signal
  docs/filesystems/9p: fix broken external links
  9p: invalidate readdir buffer on seek
  9p: use kvzalloc for readdir buffer
  net/9p/usbg: Constify struct configfs_item_operations

1 files changed, 2 insertions, 0 deletions

diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index 838a94218b59..55c6cb54bd25 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -192,6 +192,7 @@ struct p9_rdma_opts {
  * @dfltgid: default numeric groupid to mount hierarchy as
  * @uid: if %V9FS_ACCESS_SINGLE, the numeric uid which mounted the hierarchy
  * @session_lock_timeout: retry interval for blocking locks
+ * @ndentry_timeout_ms: Negative dentry lookup cache retention time in ms
  *
  * This strucure holds options which are parsed and will be transferred
  * to the v9fs_session_info structure when mounted, and therefore largely
@@ -203,6 +204,7 @@ struct p9_session_opts {
 	unsigned short debug;
 	unsigned int afid;
 	unsigned int cache;
+	unsigned int ndentry_timeout_ms;
 #ifdef CONFIG_9P_FSCACHE
 	char *cachetag;
 #endif