Eric Lee / smarc-fsl-linux-kernel

25 Nov, 2013

1 commit

  • cdf8d7581   metag: dma: remove dead code in dma_alloc_init() ... Browse Code »

    Meta has 2 levels of page table so the pmd folds into the pud which
    folds into the pgd. Therefore the !pmd check in dma_alloc_init() is dead
    code since it essentially checks whether:
    (init_mm->pgd + 0x770) == 0

    Remove the check.

    Reported-by: Chen Gang
    Signed-off-by: James Hogan

    James Hogan
     

13 Nov, 2013

1 commit

  • c1ce4b375   mm/arch: use __free_reserved_page() to simplify the code ... Browse Code »

    Use __free_reserved_page() to simplify the code in arch.

    It used split_page() in consistent_alloc()/__dma_alloc_coherent()/dma_alloc_coherent(),
    so page->_count == 1, and we can free it safely.

    __free_reserved_page()
    ClearPageReserved()
    init_page_count() // it won't change the value
    __free_page()

    Signed-off-by: Xishi Qiu
    Cc: James Hogan
    Cc: Michal Simek
    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Xishi Qiu
     

03 Mar, 2013

1 commit