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might_alloc() catches invalid blocking allocations in contexts where sleeping is not allowed. However when PF_MEMALLOC is set, the page allocator already skips reclaim and other blocking paths. In such cases, a blocking gfp_mask does not actually lead to blocking, so triggering might_alloc() splats is misleading. Adjust might_alloc() to skip warnings when the current task has PF_MEMALLOC set, matching the allocator's actual blocking behaviour. Link: https://lkml.kernel.org/r/20251007122035.56347-9-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Baoquan He <bhe@redhat.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Marco Elver <elver@google.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
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.