linux-kernel - the rq_timed_out_fn for block device(hd)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <tencent_792AA99D272B4F9025DC5D30@qq.com>
Date:	Tue, 30 Apr 2013 19:24:33 +0800
From:	"remaper" <yp.fangdong@...il.com>
To:	"linux-fsdevel" 
	<linux-fsdevel@...r.kernel.org>,
	"linux-kernel" <linux-kernel@...r.kernel.org>
Subject: the rq_timed_out_fn for block device(hd)

my kernel version: linux 2.6.34.14

in block/blk-core.c file,  blk_alloc_queue_node() function:
struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
{
...
    setup_timer(&q->timeout, blk_rq_timed_out_timer, (unsigned long) q);
...
}

when bio request timeout, execute blk_rq_timed_out_timer() function, for each req in q->request_list, execute blk_rq_timed_out() function, this two function are defined in  blk-timeout.c file:


static void blk_rq_timed_out(struct request *req)
{
...
    ret = q->rq_timed_out_fn(req);
    switch (ret) {
...
    }
}

i can't find where the ->rq_timed_out_fn defined for block device, such as drivers/block/hd.c
but i can find that the ->rq_timed_out_fn for scsi device, in drivers/scsi/scsi_transport_fc.c, line 3965