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Hugh Dickins
a5be621ee2
move_ptes() return -EAGAIN if pte_offset_map_lock() of old fails, or if pte_offset_map_nolock() of new fails: move_page_tables() retry if so. But that does need a pmd_none() check inside, to stop endless loop when huge shmem is truncated (thank you to syzbot); and move_huge_pmd() must tolerate that a page table might have been allocated there just before (of course it would be more satisfying to remove the empty page table, but this is not a path worth optimizing). Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Hugh Dickins <[email protected]> Cc: Alistair Popple <[email protected]> Cc: Anshuman Khandual <[email protected]> Cc: Axel Rasmussen <[email protected]> Cc: Christophe Leroy <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: David Hildenbrand <[email protected]> Cc: "Huang, Ying" <[email protected]> Cc: Ira Weiny <[email protected]> Cc: Jason Gunthorpe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Lorenzo Stoakes <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Mel Gorman <[email protected]> Cc: Miaohe Lin <[email protected]> Cc: Mike Kravetz <[email protected]> Cc: Mike Rapoport (IBM) <[email protected]> Cc: Minchan Kim <[email protected]> Cc: Naoya Horiguchi <[email protected]> Cc: Pavel Tatashin <[email protected]> Cc: Peter Xu <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Qi Zheng <[email protected]> Cc: Ralph Campbell <[email protected]> Cc: Ryan Roberts <[email protected]> Cc: SeongJae Park <[email protected]> Cc: Song Liu <[email protected]> Cc: Steven Price <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: Thomas Hellström <[email protected]> Cc: Will Deacon <[email protected]> Cc: Yang Shi <[email protected]> Cc: Yu Zhao <[email protected]> Cc: Zack Rusin <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
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.