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The workspaces are preallocated at the beginning where we can safely use GFP_KERNEL, but in some cases the find_workspace might reach the allocation again, now in a more restricted context when the bios or pages are being compressed. To avoid potential lockup when alloc_workspace -> vmalloc would silently use the GFP_KERNEL, add the memalloc_nofs helpers around the critical call site. Reviewed-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.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.