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    Subject[RFC 18/18] proc: present VM_LOCKED memory in /proc/self/maps
    Date
    Add a flag to /proc/self/maps to show that the memory area is locked.

    Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
    ---
    fs/proc/task_mmu.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
    index 4648c7f..8229509 100644
    --- a/fs/proc/task_mmu.c
    +++ b/fs/proc/task_mmu.c
    @@ -313,13 +313,14 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
    end -= PAGE_SIZE;

    seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
    - seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
    + seq_printf(m, "%08lx-%08lx %c%c%c%c%c %08llx %02x:%02x %lu ",
    start,
    end,
    flags & VM_READ ? 'r' : '-',
    flags & VM_WRITE ? 'w' : '-',
    flags & VM_EXEC ? 'x' : '-',
    flags & VM_MAYSHARE ? 's' : 'p',
    + flags & VM_LOCKED ? 'l' : '-',
    pgoff,
    MAJOR(dev), MINOR(dev), ino);

    --
    2.8.1
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