From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 15 Mar 2024 16:47:14 +0000 (-0700)
Subject: Merge tag 'fuse-update-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi... 
X-Git-Tag: microblaze-v6.10~105
X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=6ce8b2ce0d7e3a621cdc9eb66d74436ca7d0e66e;p=linux-2.6-microblaze.git

Merge tag 'fuse-update-6.9' of git://git./linux/kernel/git/mszeredi/fuse

Pull fuse updates from Miklos Szeredi:

 - Add passthrough mode for regular file I/O.

   This allows performing read and write (also via memory maps) on a
   backing file without incurring the overhead of roundtrips to
   userspace. For now this is only allowed to privileged servers, but
   this limitation will go away in the future (Amir Goldstein)

 - Fix interaction of direct I/O mode with memory maps (Bernd Schubert)

 - Export filesystem tags through sysfs for virtiofs (Stefan Hajnoczi)

 - Allow resending queued requests for server crash recovery (Zhao Chen)

 - Misc fixes and cleanups

* tag 'fuse-update-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: (38 commits)
  fuse: get rid of ff->readdir.lock
  fuse: remove unneeded lock which protecting update of congestion_threshold
  fuse: Fix missing FOLL_PIN for direct-io
  fuse: remove an unnecessary if statement
  fuse: Track process write operations in both direct and writethrough modes
  fuse: Use the high bit of request ID for indicating resend requests
  fuse: Introduce a new notification type for resend pending requests
  fuse: add support for explicit export disabling
  fuse: __kuid_val/__kgid_val helpers in fuse_fill_attr_from_inode()
  fuse: fix typo for fuse_permission comment
  fuse: Convert fuse_writepage_locked to take a folio
  fuse: Remove fuse_writepage
  virtio_fs: remove duplicate check if queue is broken
  fuse: use FUSE_ROOT_ID in fuse_get_root_inode()
  fuse: don't unhash root
  fuse: fix root lookup with nonzero generation
  fuse: replace remaining make_bad_inode() with fuse_make_bad()
  virtiofs: drop __exit from virtio_fs_sysfs_exit()
  fuse: implement passthrough for mmap
  fuse: implement splice read/write passthrough
  ...
---

6ce8b2ce0d7e3a621cdc9eb66d74436ca7d0e66e
diff --cc fs/fuse/inode.c
index 516ea2979a90,02869edf72f3..3a5d88878335
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@@ -954,7 -959,9 +966,9 @@@ void fuse_conn_put(struct fuse_conn *fc
  			WARN_ON(atomic_read(&bucket->count) != 1);
  			kfree(bucket);
  		}
+ 		if (IS_ENABLED(CONFIG_FUSE_PASSTHROUGH))
+ 			fuse_backing_files_free(fc);
 -		fc->release(fc);
 +		call_rcu(&fc->rcu, delayed_release);
  	}
  }
  EXPORT_SYMBOL_GPL(fuse_conn_put);