Messages in this thread | | | Date | Sat, 13 Apr 2013 14:41:23 +0200 | From | Marco <> | Subject | Re: Return value of __mm_populate |
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Adding in cc: lkml
Il 13/04/2013 14:14, Marco Stornelli ha scritto: > Hi, > > I was seeing the code of __mm_populate (in -next) and I've got a doubt > about the return value. The function __mlock_posix_error_return should > return a proper error for mlock, converting the return value from > __get_user_pages. It checks for EFAULT and ENOMEM. Actually > __get_user_pages could return, in addition, ERESTARTSYS and EHWPOISON. > So it seems to me that we could return to user space not expected value. > I can't see them on the man page. In addition we shouldn't ever return > ERESTARTSYS to the user space but EINTR. According to the man pages > maybe we should return EAGAIN in these cases. Am I missing something? > > Thanks, > > Marco
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