Messages in this thread | | | Date | Tue, 19 Aug 2003 11:28:31 +0200 | From | "J.A. Magallon" <> | Subject | Re: cache limit |
| |
On 08.19, Andrew Morton wrote: > "J.A. Magallon" <jamagallon@able.es> wrote: > > > > > It was not. Instead we have fadvise. So it would be appropriate to change > > > > Does this work in 2.4 ? > > If not, any patch flying around ? > > No. It would be fairly messy to implement in 2.4 because 2.4 does not have > the per-inode radix trees for pagecache. The implementation would need to > walk every page attached to the inode just to shoot down a single page. > And all of it underneath the global pagecache lock. > > But it is certainly possible. >
So could O_STREAMING be included in 2.4, and let people do things like
#if 2.4 fcntl(...O_STREAMING...) #else posix_fadvise() #endif
Or, if fadvise just fails with error code in 2.4, if (fadvise()<0) fcntl(O_STREAMING)
Or even: fadvise() fcntl(O_STREAMING): and let whatever succeed...
Or is it too dirt ?
TIA
-- J.A. Magallon <jamagallon@able.es> \ Software is like sex: werewolf.able.es \ It's better when it's free Mandrake Linux release 9.2 (Cooker) for i586 Linux 2.4.22-rc2-jam1m (gcc 3.3.1 (Mandrake Linux 9.2 3.3.1-1mdk)) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |