454a325a97
We now do the page pin count upfront in vma_get_pages/vma_put_pages, so that we do the allocations before we enter the vm->mutex. Our vma page references we are tracked in vma->pages_count and the extra obj->pages_pin_count being performed later in i915_vma_insert and i915_vma_remove is redundant, and worse throws off the shrinker's logic on when it can free an object by unbinding it. Reported-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Reported-by: Matthew Auld <matthew.auld@intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191015100155.10376-1-chris@chris-wilson.co.uk
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.