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    Subject[PATCH 02/38] utsns: extract create_uts_ns()
    Date
    create_uts_ns() will be used by C/R to create fresh uts_ns.

    Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
    ---
    kernel/utsname.c | 13 +++++++++++--
    1 files changed, 11 insertions(+), 2 deletions(-)

    diff --git a/kernel/utsname.c b/kernel/utsname.c
    index 815237a..8a82b4b 100644
    --- a/kernel/utsname.c
    +++ b/kernel/utsname.c
    @@ -15,6 +15,16 @@
    #include <linux/err.h>
    #include <linux/slab.h>

    +static struct uts_namespace *create_uts_ns(void)
    +{
    + struct uts_namespace *uts_ns;
    +
    + uts_ns = kmalloc(sizeof(struct uts_namespace), GFP_KERNEL);
    + if (uts_ns)
    + kref_init(&uts_ns->kref);
    + return uts_ns;
    +}
    +
    /*
    * Clone a new ns copying an original utsname, setting refcount to 1
    * @old_ns: namespace to clone
    @@ -24,14 +34,13 @@ static struct uts_namespace *clone_uts_ns(struct uts_namespace *old_ns)
    {
    struct uts_namespace *ns;

    - ns = kmalloc(sizeof(struct uts_namespace), GFP_KERNEL);
    + ns = create_uts_ns();
    if (!ns)
    return ERR_PTR(-ENOMEM);

    down_read(&uts_sem);
    memcpy(&ns->name, &old_ns->name, sizeof(ns->name));
    up_read(&uts_sem);
    - kref_init(&ns->kref);
    return ns;
    }

    --
    1.5.6.5


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