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authorPeter Xu <peterx@redhat.com>2024-03-18 16:04:00 -0400
committerAndrew Morton <akpm@linux-foundation.org>2024-04-25 20:55:46 -0700
commit7db86dc389aac35425e3f858ab5c12e1e877c4ff (patch)
tree17c69418660145a59ac0d5285b9f80d3ec0fd4f1 /mm/gup.c
parent460b9adc05d7d331cc6d0311cff7412b689e8729 (diff)
mm/gup: merge pXd huge mapping checks
Huge mapping checks in GUP are slightly redundant and can be simplified. pXd_huge() now is the same as pXd_leaf(). pmd_trans_huge() and pXd_devmap() should both imply pXd_leaf(). Time to merge them into one. Link: https://lkml.kernel.org/r/20240318200404.448346-11-peterx@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Andreas Larsson <andreas@gaisler.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Bjorn Andersson <andersson@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Fabio Estevam <festevam@denx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Konrad Dybcio <konrad.dybcio@linaro.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Mark Salter <msalter@redhat.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/gup.c')
-rw-r--r--mm/gup.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/mm/gup.c b/mm/gup.c
index 7ed2c99fb72c..d89377b87311 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -3017,8 +3017,7 @@ static int gup_pmd_range(pud_t *pudp, pud_t pud, unsigned long addr, unsigned lo
if (!pmd_present(pmd))
return 0;
- if (unlikely(pmd_trans_huge(pmd) || pmd_huge(pmd) ||
- pmd_devmap(pmd))) {
+ if (unlikely(pmd_leaf(pmd))) {
/* See gup_pte_range() */
if (pmd_protnone(pmd))
return 0;
@@ -3055,7 +3054,7 @@ static int gup_pud_range(p4d_t *p4dp, p4d_t p4d, unsigned long addr, unsigned lo
next = pud_addr_end(addr, end);
if (unlikely(!pud_present(pud)))
return 0;
- if (unlikely(pud_huge(pud) || pud_devmap(pud))) {
+ if (unlikely(pud_leaf(pud))) {
if (!gup_huge_pud(pud, pudp, addr, next, flags,
pages, nr))
return 0;
@@ -3108,7 +3107,7 @@ static void gup_pgd_range(unsigned long addr, unsigned long end,
next = pgd_addr_end(addr, end);
if (pgd_none(pgd))
return;
- if (unlikely(pgd_huge(pgd))) {
+ if (unlikely(pgd_leaf(pgd))) {
if (!gup_huge_pgd(pgd, pgdp, addr, next, flags,
pages, nr))
return;