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The BIOSET_NEED_RESCUER flag is only needed when a make_request_fn might do two allocations from the one bioset, and the second one could block until the first bio completes. dm-crypt does allocate from this bioset inside the dm make_request_fn, but does so using GFP_NOWAIT so that the allocation will not block. So BIOSET_NEED_RESCUER is not needed. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.