AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

null_blk: use device addressing mode

Browse Source 
The linear addressing mode was removed in 7386af2. Make null_blk instead
expose the ppa format geometry and support the generic addressing mode.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Matias Bjørling 2015-11-19 12:50:09 +01:00 committed by Jens Axboe
parent 6bb9535bc3
commit 5b40db9909
1 changed files with 23 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/block/null_blk.c
View File

@ -486,6 +486,7 @@ static int null_lnvm_submit_io(struct request_queue *q, struct nvm_rq *rqd)
static int null_lnvm_id(struct request_queue *q, struct nvm_id *id)
{
sector_t size = gb * 1024 * 1024 * 1024ULL;
sector_t blksize;
struct nvm_id_group *grp;
id->ver_id = 0x1;
@ -493,17 +494,34 @@ static int null_lnvm_id(struct request_queue *q, struct nvm_id *id)
id->cgrps = 1;
id->cap = 0x3;
id->dom = 0x1;
id->ppat = NVM_ADDRMODE_LINEAR;
id->ppaf.blk_offset = 0;
id->ppaf.blk_len = 16;
id->ppaf.pg_offset = 16;
id->ppaf.pg_len = 16;
id->ppaf.sect_offset = 32;
id->ppaf.sect_len = 8;
id->ppaf.pln_offset = 40;
id->ppaf.pln_len = 8;
id->ppaf.lun_offset = 48;
id->ppaf.lun_len = 8;
id->ppaf.ch_offset = 56;
id->ppaf.ch_len = 8;
do_div(size, bs); /* convert size to pages */
do_div(size, 256); /* concert size to pgs pr blk */
grp = &id->groups[0];
grp->mtype = 0;
grp->fmtype = 1;
grp->fmtype = 0;
grp->num_ch = 1;
grp->num_lun = 1;
grp->num_pln = 1;
grp->num_blk = size / 256;
grp->num_pg = 256;
blksize = size;
do_div(size, (1 << 16));
grp->num_lun = size + 1;
do_div(blksize, grp->num_lun);
grp->num_blk = blksize;
grp->num_pln = 1;
grp->fpg_sz = bs;
grp->csecs = bs;
grp->trdt = 25000;