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 Restructured Text 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.
Miaohe Lin
authored
It's unexpected to walk the page table when vma_address() return -EFAULT. But dev_pagemap_mapping_shift() is called only when vma associated to the error page is found already in collect_procs_{file,anon}, so vma_address() should not return -EFAULT except with some bug, as Naoya pointed out. We can use VM_BUG_ON_VMA() to catch this bug here. Link: https://lkml.kernel.org/r/20220218090118.1105-3-linmiaohe@huawei.com Signed-off-by:Miaohe Lin <linmiaohe@huawei.com> Acked-by:
Naoya Horiguchi <naoya.horiguchi@nec.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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