[RFC]should swap-file opened with O_DIRECT?

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

 



  The sys_swapon system call open the swap-file through 
filp_open(..., O_RDWR|O_LARGEFILE,...).
  In this way, I think that the pageout process of anonymous
pages finally will write them out through (swap-file)->f_ops->write,
and it will result in caches of swapfile. However, swapping only 
happens when memory is tight. So why not set O_DIRECT? Is there any
special reason to keep caches of swapfile?
  Is the idea right ? Or something misunstood? 

							Yingchao Zhou
							[email protected]


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux