mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-06 02:50:49 +09:00
ff6629f88c
When destroying a DMA mmapped object, there is no need to artificially delay the freeing of the pages to the mmap entry removal. Since the vma keeps a reference count on these pages, free_pages_exact can be called on the destroy verb as it won't really free the pages until the reference count is cleared (in case the user hasn't called munmap yet). Remove the special handling of DMA pages and call free_pages_exact on destroy_qp/cq. The mmap entry removal is moved to the beginning of the destroy flows, so the driver can safely free the pages. Link: https://lore.kernel.org/r/20200225114010.21790-4-galpress@amazon.com Reviewed-by: Firas JahJah <firasj@amazon.com> Reviewed-by: Yossi Leybovich <sleybo@amazon.com> Signed-off-by: Gal Pressman <galpress@amazon.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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.