Hi, Currently using direct descriptors with open or accept requires the application to manage the descriptor space, picking which slot to use for any given file. However, there are cases where it's useful to just get a direct descriptor and not care about which value it is, instead just return it like a normal open or accept would. This will also be useful for multishot accept support, where allocated direct descriptors are a requirement to make that feature work with these kinds of files. This adds support for allocating a new fixed descriptor. This is chosen by passing in UINT_MAX as the fixed slot, which otherwise has a limit of INT_MAX like any file descriptor does. fs/io_uring.c | 100 +++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 94 insertions(+), 6 deletions(-) -- Jens Axboe
