GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-27 09:02:06 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

block: add large command support

Browse source 
This patch changes rq->cmd from the static array to a pointer to
support large commands.

We rarely handle large commands. So for optimization, a struct request
still has a static array for a command. rq_init sets rq->cmd pointer
to the static array.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
FUJITA Tomonori 2008-04-29 09:54:39 +02:00 • committed by Jens Axboe
parent d34c87e4ba
commit d7e3c3249e
2 changed files with 4 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

5
include/linux/blkdev.h
View file

@ -215,8 +215,9 @@ struct request {
/*
* when request is used as a packet command carrier
*/
unsigned int cmd_len;
unsigned char cmd[BLK_MAX_CDB];
unsigned short cmd_len;
unsigned char __cmd[BLK_MAX_CDB];
unsigned char *cmd;
unsigned int data_len;
unsigned int extra_len; /* length of alignment and padding */