Re: Patch FIOFLUSH

[Christoph Hellwig]

On Wed, May 21, 2003 at 10:28:03AM -0700, Ross Biro wrote:
> 
> Here's a patch against 2.4.18 that allows user space to flush a file 
> from both the buffer cache and the page cache.  The reason for flushing 
> a file from the caches is to the read the file again to verify it made 
> it to more permanent storage correctly.  Someone may want to add 
> similiar code to 2.5.

This came up at SGI some time ago and the right solution is _not_ a new
ioctl but fadvise(..., POSIX_FADV_DONTNEED).   I'll submit a clean backport
once 2.4.21 is out (if that will ever happen)