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vdisk_blockio: Report physical block size correctly

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Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@6499 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2015-09-14 03:12:09 +00:00
parent ed07ec49a8
commit 61372fd4dd
1 changed files with 8 additions and 16 deletions
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24
scst/src/dev_handlers/scst_vdisk.c
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@@ -5069,13 +5069,17 @@ static enum compl_status_e vdisk_exec_read_capacity16(struct vdisk_cmd_params *p
int32_t length;
uint8_t *address;
struct scst_vdisk_dev *virt_dev;
uint32_t blocksize;
struct block_device *bdev;
struct request_queue *q;
uint32_t blocksize, physical_blocksize;
uint64_t nblocks;
uint8_t buffer[32];
TRACE_ENTRY();
virt_dev = cmd->dev->dh_priv;
bdev = virt_dev->bdev;
q = bdev ? bdev_get_queue(bdev) : NULL;
blocksize = cmd->dev->block_size;
nblocks = virt_dev->nblocks - 1;
@@ -5110,21 +5114,9 @@ static enum compl_status_e vdisk_exec_read_capacity16(struct vdisk_cmd_params *p
}
}
switch (blocksize) {
case 512:
buffer[13] = 3;
break;
case 1024:
buffer[13] = 2;
break;
case 2048:
buffer[13] = 1;
break;
case 4096:
default:
buffer[13] = 0;
break;
}
/* LOGICAL BLOCKS PER PHYSICAL BLOCK EXPONENT */
physical_blocksize = q ? queue_physical_block_size(q) : 4096;
buffer[13] = max(ilog2(physical_blocksize) - ilog2(blocksize), 0);
if (virt_dev->thin_provisioned) {
buffer[14] |= 0x80; /* LBPME */