Amir Goldstein fbcddc7410 fuse: disable FOPEN_PARALLEL_DIRECT_WRITES with FUSE_DIRECT_IO_ALLOW_MMAP
commit 3f29f1c336c0e8a4bec52f1e5217f88835553e5b upstream.

The new fuse init flag FUSE_DIRECT_IO_ALLOW_MMAP breaks assumptions made by
FOPEN_PARALLEL_DIRECT_WRITES and causes test generic/095 to hit
BUG_ON(fi->writectr < 0) assertions in fuse_set_nowrite():

generic/095 5s ...
  kernel BUG at fs/fuse/dir.c:1756!
...
  ? fuse_set_nowrite+0x3d/0xdd
  ? do_raw_spin_unlock+0x88/0x8f
  ? _raw_spin_unlock+0x2d/0x43
  ? fuse_range_is_writeback+0x71/0x84
  fuse_sync_writes+0xf/0x19
  fuse_direct_io+0x167/0x5bd
  fuse_direct_write_iter+0xf0/0x146

Auto disable FOPEN_PARALLEL_DIRECT_WRITES when server negotiated
FUSE_DIRECT_IO_ALLOW_MMAP.

Fixes: e78662e818f9 ("fuse: add a new fuse init flag to relax restrictions in no cache mode")
Cc: <stable@vger.kernel.org> # v6.6
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-12-20 17:01:51 +01:00
..
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-08-28 11:39:14 -07:00
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-10-27 16:44:58 -10:00
2023-08-28 09:31:32 -07:00
2023-08-28 11:04:18 -07:00
2023-08-28 10:17:14 -07:00
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-09-01 09:43:18 -07:00
2023-08-29 17:45:22 -04:00
2023-08-29 20:21:42 -07:00
2023-08-31 12:07:34 -05:00
2023-08-29 20:21:42 -07:00
2023-10-19 09:10:18 -07:00
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-08-29 20:21:42 -07:00
2023-12-20 17:01:43 +01:00
2023-08-29 20:21:42 -07:00
\n
2023-08-30 12:10:50 -07:00
2023-08-29 20:21:42 -07:00
2023-08-28 09:31:32 -07:00
2023-08-28 11:59:52 -07:00
2023-08-28 10:17:14 -07:00
2023-06-28 20:35:21 -07:00
2023-06-26 09:50:21 -07:00
2023-08-24 16:20:30 -07:00
2023-07-26 14:56:07 +02:00
2023-08-08 19:36:51 +02:00
2023-08-28 10:17:14 -07:00
2023-08-21 13:46:25 -07:00
2023-08-14 18:48:02 +02:00
2023-08-29 20:21:42 -07:00
2023-08-28 11:04:18 -07:00
2023-08-29 20:21:42 -07:00
2023-08-19 12:12:12 +02:00
2023-08-31 15:32:18 -07:00
2023-08-02 09:13:09 -06:00
2023-06-26 10:27:04 -07:00
2023-07-13 10:28:04 +02:00
2023-08-15 08:32:45 +02:00
2023-08-31 12:47:15 +02:00