Hi,
Le Tue, 19 Feb 2008 14:48:18 +0900,
Kyungmin Park [EMAIL PROTECTED] a écrit :
+ /* Write synchronous */
+ bio-bi_rw |= (1 BIO_RW_SYNC);
Adding BIO_RW_SYNC doesn't make generic_make_request() synchronous as
in generic_make_request() returns only after write
On Tue, Feb 19 2008, Kyungmin Park wrote:
Agree, however see the following sequence.
__generic_make_request call q-make_request_fn(q, bio);
It was set by blk_init_queue_node with __make_request.
There are two ways in __make_request.
Case 1, get_rq
Case 2, out or merged
On Tue, Feb 19 2008, Kyungmin Park wrote:
Le Tue, 19 Feb 2008 14:48:18 +0900,
Kyungmin Park [EMAIL PROTECTED] a écrit :
+ /* Write synchronous */
+ bio-bi_rw |= (1 BIO_RW_SYNC);
Adding BIO_RW_SYNC doesn't make generic_make_request() synchronous as
Agree, however see the following sequence.
__generic_make_request call q-make_request_fn(q, bio);
It was set by blk_init_queue_node with __make_request.
There are two ways in __make_request.
Case 1, get_rq
Case 2, out or merged (otherwise you mean unplug case)
In case 1, if the
Le Tue, 19 Feb 2008 14:48:18 +0900,
Kyungmin Park [EMAIL PROTECTED] a écrit :
+ /* Write synchronous */
+ bio-bi_rw |= (1 BIO_RW_SYNC);
Adding BIO_RW_SYNC doesn't make generic_make_request() synchronous as
in generic_make_request() returns only after write