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    SubjectRe: [PATCH 06/15] Introduce sysfs_sd_setattr and fix sysfs_chmod
    Eric W. Biederman wrote:
    > Currently sysfs_chmod calls sys_setattr which in turn calls
    > inode_change_ok which checks to see if it is ok for the current user
    > space process to change tha attributes. Since sysfs_chmod_file has
    > only kernel mode clients denying them permission if user space is the
    > problem is completely inappropriate.
    > Therefore factor out sysfs_sd_setattr which does not call
    > inode_change_ok and modify sysfs_chmod_file to call it.
    > In addition setting victim_sd->s_mode explicitly in sysfs_chmod_file
    > is redundant so remove that as well.
    > Thanks to Tejun Heo <>, and
    > Daniel Lezcano <> for working on this
    > and spotting this case.
    > Signed-off-by: Eric W. Biederman <>

    Acked-by: Tejun Heo <>


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