mm: khugepaged: avoid pointless allocation for "struct mm_slot"

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In __khugepaged_enter(), if "mm->flags" with MMF_VM_HUGEPAGE bit is set,
the "mm_slot" will be released and return, so we can call mm_slot_alloc()
after test_and_set_bit().

Link: https://lkml.kernel.org/r/20230531095817.11012-1-xhao@linux.alibaba.com
Signed-off-by: Xin Hao <xhao@linux.alibaba.com>
Reviewed-by: Andrew Morton <akpm@linux-foudation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

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Xin Hao 2023-05-31 17:58:17 +08:00 • committed by Andrew Morton

parent 3b11edf1f2

commit 1661867027

1 changed files with 5 additions and 7 deletions

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mm/khugepaged.c

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