]> www.infradead.org Git - users/jedix/linux-maple.git/commit
mm: conditionally write-lock VMA in free_pgtables
authorSuren Baghdasaryan <surenb@google.com>
Mon, 27 Feb 2023 17:36:18 +0000 (09:36 -0800)
committerAndrew Morton <akpm@linux-foundation.org>
Tue, 28 Mar 2023 23:24:53 +0000 (16:24 -0700)
commit8b6e12d974dca8b82bf961e2eb75f81d4040debb
tree71ed4057400ddca95f629ac62487d2171e9c182b
parent4b553ede67726712040386a2cf4f9603db981dad
mm: conditionally write-lock VMA in free_pgtables

Normally free_pgtables needs to lock affected VMAs except for the case
when VMAs were isolated under VMA write-lock.  munmap() does just that,
isolating while holding appropriate locks and then downgrading mmap_lock
and dropping per-VMA locks before freeing page tables.  Add a parameter to
free_pgtables for such scenario.

Link: https://lkml.kernel.org/r/20230227173632.3292573-20-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
mm/internal.h
mm/memory.c
mm/mmap.c