On Thu, Mar 08, 2001 at 10:11:50AM +0000, Anton Altaparmakov wrote:
> At 22:33 07/03/2001, Rik van Riel wrote:
> [snip]
> > typedef struct page {
> >+ struct list_head list; /* ->mapping has some page lists. */
> >+ struct address_space *mapping; /* The inode (or ...) we belong to. */
> >+ unsigned long index; /* Our offset within mapping. */
>
> Assuming index is in bytes (it looks like it is):
isn't. To get the byte offset, you have to multiply it by PAGE_{CACHE_,}SIZE.
> [snip]
> >+ * During disk I/O, PG_locked is used. This bit is set before I/O
> >+ * and reset when I/O completes. page->wait is a wait queue of all
> >+ * tasks waiting for the I/O on this page to complete.
>
> Is this physical I/O only or does it include a driver writing/reading the page?
Depends on the method of the driver, that is getting called.
--
10.+11.03.2001 - 3. Chemnitzer LinuxTag <http://www.tu-chemnitz.de/linux/tag>
<<<<<<<<<<<< come and join the fun >>>>>>>>>>>>
-
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/
This archive was generated by hypermail 2b29 : Thu Mar 15 2001 - 21:00:07 EST