PM: hibernate: Restrict GFP mask in hibernation_snapshot()
Commit 12ffc3b1 ("PM: Restrict swap use to later in the suspend sequence") incorrectly removed a pm_restrict_gfp_mask() call from hibernation_snapshot(), so memory allocations involving swap are not prevented from being carried out in this code path any more which may lead to serious breakage. The symptoms of such breakage have become visible after adding a shrink_shmem_memory() call to hibernation_snapshot() in commit 2640e819 ("PM: hibernate: shrink shmem pages after dev_pm_ops.prepare()") which caused this problem to be much more likely to manifest itself. However, since commit 2640e819 was initially present in the DRM tree that did not include commit 12ffc3b1, the symptoms of this issue were not visible until merge commit 260f6f4f ("Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel") that exposed it through an entirely reasonable merge conflict resolution. Fixes: 12ffc3b1 ("PM: Restrict swap use to later in the suspend sequence") Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220555 Reported-by:Todd Brandt <todd.e.brandt@linux.intel.com> Tested-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by:
Mario Limonciello (AMD) <superm1@kernel.org>
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