Re: batched write

Hans Reiser
2006-06-19T20:48:00Z

Andreas Dilger wrote:

>
>If the VFS supported delayed allocation it would call into the filesystem
>on a per-sys_write basis
>
Is it necessary for VFS to specify that it is for delayed allocation
that it does it, or can it be a more generic sort of per sys-write call?

>to allow the filesystem to RESERVE space for all
>of the pages in the write call, and then later (under memory pressure,
>page aging, or even "pull" from the fs) submit a whole batch of contiguous
>pages to the fs efficiently (via ->fill_pages() or whatever).
>
>