fuse: write inode in fuse_release()

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: fuse: write inode in fuse_release() A race between write(2) and close(2) allows pages to be dirtied after fuse_flush -> write_inode_now(). If these pages are not flushed from fuse_release(), then there might not be a writable open file later. So any remaining dirty pages must be written back before the file is released. This is a partial revert of the blamed commit.

References

• https://git.kernel.org/stable/c/5ccb0420b7c9334ab8122037847101931b899301
• https://git.kernel.org/stable/c/4bd9d5d20f344d015422969302d12653c903c271
• https://git.kernel.org/stable/c/035ff33cf4db101250fb980a3941bf078f37a544