lkml.org 
[lkml]   [2020]   [Sep]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH v1 04/30] powerpc/vdso: Remove get_page() in vdso_pagelist initialization
    Date
    Partly copied from commit 16fb1a9bec61 ("arm64: vdso: clean up
    vdso_pagelist initialization").

    No need to get_page() the vdso text/data - these are part of the
    kernel image.

    Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
    ---
    arch/powerpc/kernel/vdso.c | 6 ++----
    1 file changed, 2 insertions(+), 4 deletions(-)

    diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
    index 6d106fcafb9e..dfaa4be258d2 100644
    --- a/arch/powerpc/kernel/vdso.c
    +++ b/arch/powerpc/kernel/vdso.c
    @@ -748,7 +748,7 @@ static int __init vdso_init(void)
    BUG_ON(vdso32_pagelist == NULL);
    for (i = 0; i < vdso32_pages; i++) {
    struct page *pg = virt_to_page(vdso32_kbase + i*PAGE_SIZE);
    - get_page(pg);
    +
    vdso32_pagelist[i] = pg;
    }
    vdso32_pagelist[i++] = virt_to_page(vdso_data);
    @@ -761,15 +761,13 @@ static int __init vdso_init(void)
    BUG_ON(vdso64_pagelist == NULL);
    for (i = 0; i < vdso64_pages; i++) {
    struct page *pg = virt_to_page(vdso64_kbase + i*PAGE_SIZE);
    - get_page(pg);
    +
    vdso64_pagelist[i] = pg;
    }
    vdso64_pagelist[i++] = virt_to_page(vdso_data);
    vdso64_pagelist[i] = NULL;
    #endif /* CONFIG_PPC64 */

    - get_page(virt_to_page(vdso_data));
    -
    smp_wmb();
    vdso_ready = 1;

    --
    2.25.0
    \
     
     \ /
      Last update: 2020-09-27 11:18    [W:3.181 / U:0.032 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site