From: Alexandr Andreev <andreev@niisi.msk.ru>
To: linux-kernel@vger.kernel.org
Subject: Disabling interrupts before block device request call
Date: Fri, 25 May 2001 19:20:47 -0400 [thread overview]
Message-ID: <3B0EE8CF.7040502@niisi.msk.ru> (raw)
Hi, list
In ll_rw_block.c, before calling block device specific request function
( i mean do_hd_request, do_ftl_request, ... ) the io_request_lock is
locking, and all interrupts are disabling. I know, that request handler
routine have to be atomic, but when we read data from a flash device (
for example ) we use a timeouts. Where do we have to enable timer
interrupts, or should we disable all interrupts?
next reply other threads:[~2001-05-25 15:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-25 23:20 Alexandr Andreev [this message]
2001-05-25 22:01 ` Disabling interrupts before block device request call Jens Axboe
2001-05-28 19:07 ` Why timer interrupt is disabled? Alexandr Andreev
2001-05-28 15:36 ` David Woodhouse
2001-05-28 19:24 ` Disabling interrupts before block device request call Alexandr Andreev
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