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Commit8599559580("fuse: Set direct_io and parallel_direct_writes") broke use cases that require mmap() with MAP_SHARED on the export. In particular, swtpm_setup using its 'file://' protocol requires this. From the kernel documentation [0]: > To allow shared mmap, the FUSE_DIRECT_IO_ALLOW_MMAP flag may be > enabled in the FUSE_INIT reply. Set the FUSE_DIRECT_IO_ALLOW_MMAP flag to restore compatibility with users requiring shared mmap. The FUSE_INIT_EXT flag needs to be set for the flags2 member to have an effect. [0]: https://www.kernel.org/doc/html/next/filesystems/fuse/fuse-io.html Cc: qemu-stable@nongnu.org Fixes:8599559580("fuse: Set direct_io and parallel_direct_writes") Signed-off-by: Fiona Ebner <f.ebner@proxmox.com> Message-ID: <20260506145424.10249-3-f.ebner@proxmox.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>