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

diff --cc fs/9p/v9fs_vfs.h
Simple merge

diff --cc fs/9p/vfs_addr.c
Simple merge

diff --cc fs/9p/vfs_inode.c
Simple merge

diff --cc fs/9p/vfs_inode_dotl.c
index 141fb54db65d2f462e7f34b19537596831d5a4e3,8b056c334c2b0b7c2fcf4b09014a0bbb0e6681d7..f7396d20cb6cdcb35a415ef938274724876b64f5
--- 1/fs/9p/vfs_inode_dotl.c
--- 2/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@@ -693,9 -690,10 +694,10 @@@ v9fs_vfs_symlink_dotl(struct mnt_idmap 
        struct p9_qid qid;
        struct p9_fid *dfid;
        struct p9_fid *fid = NULL;
+       struct inode *inode;
  
        name = dentry->d_name.name;
 -      p9_debug(P9_DEBUG_VFS, "%lu,%s,%s\n", dir->i_ino, name, symname);
 +      p9_debug(P9_DEBUG_VFS, "%llu,%s,%s\n", dir->i_ino, name, symname);
  
        dfid = v9fs_parent_fid(dentry);
        if (IS_ERR(dfid)) {