diff options
| author | Baoquan He <bhe@redhat.com> | 2020-10-13 16:56:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-13 18:38:33 -0700 |
| commit | d79d176a303775e2ccb16ca3c08bb63c030aa4dc (patch) | |
| tree | 30a3184d00d8d59436aaeefbfe8042479d9fd583 | |
| parent | 3e5c36007e9c37378ff0bcaa2bc813d72c8659bc (diff) | |
| download | linux-d79d176a303775e2ccb16ca3c08bb63c030aa4dc.tar.bz2 | |
mm/hugetlb.c: remove the unnecessary non_swap_entry()
If a swap entry tests positive for either is_[migration|hwpoison]_entry(),
then its swap_type() is among SWP_MIGRATION_READ, SWP_MIGRATION_WRITE and
SWP_HWPOISON. All these types >= MAX_SWAPFILES, exactly what is asserted
with non_swap_entry().
So the checking non_swap_entry() in is_hugetlb_entry_migration() and
is_hugetlb_entry_hwpoisoned() is redundant.
Let's remove it to optimize code.
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lkml.kernel.org/r/20200723032248.24772-3-bhe@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/hugetlb.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 57b96c1d5265..a7d312cc018e 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3799,7 +3799,7 @@ bool is_hugetlb_entry_migration(pte_t pte) if (huge_pte_none(pte) || pte_present(pte)) return false; swp = pte_to_swp_entry(pte); - if (non_swap_entry(swp) && is_migration_entry(swp)) + if (is_migration_entry(swp)) return true; else return false; @@ -3812,7 +3812,7 @@ static bool is_hugetlb_entry_hwpoisoned(pte_t pte) if (huge_pte_none(pte) || pte_present(pte)) return false; swp = pte_to_swp_entry(pte); - if (non_swap_entry(swp) && is_hwpoison_entry(swp)) + if (is_hwpoison_entry(swp)) return true; else return false; |