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Commit 4aab2be0 authored by Vijay Balakrishna's avatar Vijay Balakrishna Committed by Linus Torvalds
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mm: khugepaged: recalculate min_free_kbytes after memory hotplug as expected by khugepaged

When memory is hotplug added or removed the min_free_kbytes should be
recalculated based on what is expected by khugepaged.  Currently after
hotplug, min_free_kbytes will be set to a lower default and higher
default set when THP enabled is lost.

This change restores min_free_kbytes as expected for THP consumers.

[vijayb@linux.microsoft.com: v5]
  Link: https://lkml.kernel.org/r/1601398153-5517-1-git-send-email-vijayb@linux.microsoft.com



Fixes: f000565a ("thp: set recommended min free kbytes")
Signed-off-by: default avatarVijay Balakrishna <vijayb@linux.microsoft.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Reviewed-by: default avatarPavel Tatashin <pasha.tatashin@soleen.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Cc: Allen Pais <apais@microsoft.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: <stable@vger.kernel.org>
Link: https://lkml.kernel.org/r/1600305709-2319-2-git-send-email-vijayb@linux.microsoft.com
Link: https://lkml.kernel.org/r/1600204258-13683-1-git-send-email-vijayb@linux.microsoft.com


Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8b7b2eb1
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