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| author | Wolfram Sang <wsa@the-dreams.de> | 2018-10-05 14:19:02 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2018-10-05 14:19:02 +0200 |
| commit | 05552832204e37e038d550e1354300eb11a9e5ec (patch) | |
| tree | 69f7ef1f98e2382b35d7e6098705c00fcfa3d3c3 /arch/arm64/mm | |
| parent | 49d54abee9d1507e117a4218dc5baa3ebc5b93f1 (diff) | |
| parent | 9a9e295e7c5c0409c020088b0ae017e6c2b7df6e (diff) | |
| download | linux-05552832204e37e038d550e1354300eb11a9e5ec.tar.bz2 | |
Merge tag 'at24-4.20-updates-for-wolfram' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-4.20
AT24 updates for 4.20
Single patch from Wang Xin improving the read/write loop in at24
under high load.
Diffstat (limited to 'arch/arm64/mm')
| -rw-r--r-- | arch/arm64/mm/mmu.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 65f86271f02b..8080c9f489c3 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -985,8 +985,9 @@ int pmd_free_pte_page(pmd_t *pmdp, unsigned long addr) pmd = READ_ONCE(*pmdp); - /* No-op for empty entry and WARN_ON for valid entry */ - if (!pmd_present(pmd) || !pmd_table(pmd)) { + if (!pmd_present(pmd)) + return 1; + if (!pmd_table(pmd)) { VM_WARN_ON(!pmd_table(pmd)); return 1; } @@ -1007,8 +1008,9 @@ int pud_free_pmd_page(pud_t *pudp, unsigned long addr) pud = READ_ONCE(*pudp); - /* No-op for empty entry and WARN_ON for valid entry */ - if (!pud_present(pud) || !pud_table(pud)) { + if (!pud_present(pud)) + return 1; + if (!pud_table(pud)) { VM_WARN_ON(!pud_table(pud)); return 1; } |