Re: [PATCH] mm: msync: require either MS_ASYNC or MS_SYNC

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 04/03/2014 01:51 PM, Christopher Covington wrote:
> On 04/03/2014 04:25 AM, Michael Kerrisk (man-pages) wrote:
> 
>> I think the only reasonable solution is to better document existing
>> behavior and what the programmer should do. With that in mind, I've
>> drafted the following text for the msync(2) man page:
>>
>>     NOTES
>>        According to POSIX, exactly one of MS_SYNC and MS_ASYNC  must  be
>>        specified  in  flags.   However,  Linux permits a call to msync()
>>        that specifies neither of these flags, with  semantics  that  are
>>        (currently)  equivalent  to  specifying  MS_ASYNC.   (Since Linux
>>        2.6.19, MS_ASYNC is in fact a no-op, since  the  kernel  properly
>>        tracks  dirty  pages  and  flushes them to storage as necessary.)
>>        Notwithstanding the Linux behavior, portable, future-proof appli‐
>>        cations  should  ensure  that they specify exactly one of MS_SYNC
>>        and MS_ASYNC in flags.
> 
> Nit: MS_SYNC or MS_ASYNC

Thanks. Reworded.

Cheers,

Michael

-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
--
To unsubscribe from this list: send the line "unsubscribe linux-api" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux