From: Jeff Garzik <jgarzik@mandrakesoft.com>
Date: Mon, 16 Sep 2002 19:48:37 -0400
I dunno when it happened, but 2.5.x now returns EINVAL for all
file->file cases.
In 2.4.x, if sendpage is NULL, file_send_actor in mm/filemap.c faked a
call to fops->write().
In 2.5.x, if sendpage is NULL, EINVAL is unconditionally returned.
What if source and destination file and offsets match?
Sounds like 2.4.x might deadlock.
In fact it sounds similar to the "read() with buf pointed to same
page in MAP_WRITE mmap()'d area" deadlock we had ages ago.
-
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 : Mon Sep 23 2002 - 22:00:18 EST