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55b09a913f
Upstream commit cdd9a571b7d8 ("fs/proc: move page_mapcount() to
fs/proc/internal.h") made page_mapcount() an internal function for Linux
v6.11. This function is used by the NVMAP driver and so implement this
function in the NVMAP driver directly instead. Note that newer kernels
implement folio_entire_mapcount() for compound page counts where as
older kernels use compound_mapcount(). Use conftest to detect which of
these functions is present in the kernel.
Bug 4749580
Change-Id: I6504448727d6b3e9f2caa8581a66aad464ae2426
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3180097
(cherry picked from commit f327656ea3)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3183926
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Ketan Patil <ketanp@nvidia.com>