null_blk: create a helper for zoned devices
This patch creates a helper function for handling zoned block device operations. This patch also restructured the code for null_blk_zoned.c and uses the pattern to return blk_status_t and catch the error in the function null_handle_cmd() into cmd->error variable instead of setting it up in the deeper layer just like the way it is done for flush, badblocks and memory backed case in the null_handle_cmd(). We also move null_handle_zoned() to the null_blk_zoned.c to keep the zoned code separate. Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>alistair/sunxi64-5.4-dsi
parent
7ea88e229e
commit
fceb5d1b19
|
@ -90,9 +90,9 @@ int null_zone_init(struct nullb_device *dev);
|
||||||
void null_zone_exit(struct nullb_device *dev);
|
void null_zone_exit(struct nullb_device *dev);
|
||||||
int null_zone_report(struct gendisk *disk, sector_t sector,
|
int null_zone_report(struct gendisk *disk, sector_t sector,
|
||||||
struct blk_zone *zones, unsigned int *nr_zones);
|
struct blk_zone *zones, unsigned int *nr_zones);
|
||||||
void null_zone_write(struct nullb_cmd *cmd, sector_t sector,
|
inline blk_status_t null_handle_zoned(struct nullb_cmd *cmd,
|
||||||
unsigned int nr_sectors);
|
enum req_opf op, sector_t sector,
|
||||||
void null_zone_reset(struct nullb_cmd *cmd, sector_t sector);
|
sector_t nr_sectors);
|
||||||
#else
|
#else
|
||||||
static inline int null_zone_init(struct nullb_device *dev)
|
static inline int null_zone_init(struct nullb_device *dev)
|
||||||
{
|
{
|
||||||
|
@ -106,10 +106,11 @@ static inline int null_zone_report(struct gendisk *disk, sector_t sector,
|
||||||
{
|
{
|
||||||
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
||||||
}
|
}
|
||||||
static inline void null_zone_write(struct nullb_cmd *cmd, sector_t sector,
|
static inline blk_status_t null_handle_zoned(struct nullb_cmd *cmd,
|
||||||
unsigned int nr_sectors)
|
enum req_opf op, sector_t sector,
|
||||||
|
sector_t nr_sectors)
|
||||||
{
|
{
|
||||||
|
return BLK_STS_NOTSUPP;
|
||||||
}
|
}
|
||||||
static inline void null_zone_reset(struct nullb_cmd *cmd, sector_t sector) {}
|
|
||||||
#endif /* CONFIG_BLK_DEV_ZONED */
|
#endif /* CONFIG_BLK_DEV_ZONED */
|
||||||
#endif /* __NULL_BLK_H */
|
#endif /* __NULL_BLK_H */
|
||||||
|
|
|
@ -1209,14 +1209,9 @@ static blk_status_t null_handle_cmd(struct nullb_cmd *cmd, sector_t sector,
|
||||||
if (dev->memory_backed)
|
if (dev->memory_backed)
|
||||||
cmd->error = null_handle_memory_backed(cmd, op);
|
cmd->error = null_handle_memory_backed(cmd, op);
|
||||||
|
|
||||||
if (!cmd->error && dev->zoned) {
|
if (!cmd->error && dev->zoned)
|
||||||
if (op == REQ_OP_WRITE)
|
cmd->error = null_handle_zoned(cmd, op, sector, nr_sectors);
|
||||||
null_zone_write(cmd, sector, nr_sectors);
|
|
||||||
else if (op == REQ_OP_ZONE_RESET)
|
|
||||||
null_zone_reset(cmd, sector);
|
|
||||||
else if (op == REQ_OP_ZONE_RESET_ALL)
|
|
||||||
null_zone_reset(cmd, 0);
|
|
||||||
}
|
|
||||||
out:
|
out:
|
||||||
/* Complete IO by inline, softirq or timer */
|
/* Complete IO by inline, softirq or timer */
|
||||||
switch (dev->irqmode) {
|
switch (dev->irqmode) {
|
||||||
|
|
|
@ -84,7 +84,7 @@ int null_zone_report(struct gendisk *disk, sector_t sector,
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
void null_zone_write(struct nullb_cmd *cmd, sector_t sector,
|
static blk_status_t null_zone_write(struct nullb_cmd *cmd, sector_t sector,
|
||||||
unsigned int nr_sectors)
|
unsigned int nr_sectors)
|
||||||
{
|
{
|
||||||
struct nullb_device *dev = cmd->nq->dev;
|
struct nullb_device *dev = cmd->nq->dev;
|
||||||
|
@ -95,14 +95,12 @@ void null_zone_write(struct nullb_cmd *cmd, sector_t sector,
|
||||||
case BLK_ZONE_COND_FULL:
|
case BLK_ZONE_COND_FULL:
|
||||||
/* Cannot write to a full zone */
|
/* Cannot write to a full zone */
|
||||||
cmd->error = BLK_STS_IOERR;
|
cmd->error = BLK_STS_IOERR;
|
||||||
break;
|
return BLK_STS_IOERR;
|
||||||
case BLK_ZONE_COND_EMPTY:
|
case BLK_ZONE_COND_EMPTY:
|
||||||
case BLK_ZONE_COND_IMP_OPEN:
|
case BLK_ZONE_COND_IMP_OPEN:
|
||||||
/* Writes must be at the write pointer position */
|
/* Writes must be at the write pointer position */
|
||||||
if (sector != zone->wp) {
|
if (sector != zone->wp)
|
||||||
cmd->error = BLK_STS_IOERR;
|
return BLK_STS_IOERR;
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (zone->cond == BLK_ZONE_COND_EMPTY)
|
if (zone->cond == BLK_ZONE_COND_EMPTY)
|
||||||
zone->cond = BLK_ZONE_COND_IMP_OPEN;
|
zone->cond = BLK_ZONE_COND_IMP_OPEN;
|
||||||
|
@ -115,12 +113,12 @@ void null_zone_write(struct nullb_cmd *cmd, sector_t sector,
|
||||||
break;
|
break;
|
||||||
default:
|
default:
|
||||||
/* Invalid zone condition */
|
/* Invalid zone condition */
|
||||||
cmd->error = BLK_STS_IOERR;
|
return BLK_STS_IOERR;
|
||||||
break;
|
|
||||||
}
|
}
|
||||||
|
return BLK_STS_OK;
|
||||||
}
|
}
|
||||||
|
|
||||||
void null_zone_reset(struct nullb_cmd *cmd, sector_t sector)
|
static blk_status_t null_zone_reset(struct nullb_cmd *cmd, sector_t sector)
|
||||||
{
|
{
|
||||||
struct nullb_device *dev = cmd->nq->dev;
|
struct nullb_device *dev = cmd->nq->dev;
|
||||||
unsigned int zno = null_zone_no(dev, sector);
|
unsigned int zno = null_zone_no(dev, sector);
|
||||||
|
@ -137,10 +135,8 @@ void null_zone_reset(struct nullb_cmd *cmd, sector_t sector)
|
||||||
}
|
}
|
||||||
break;
|
break;
|
||||||
case REQ_OP_ZONE_RESET:
|
case REQ_OP_ZONE_RESET:
|
||||||
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL) {
|
if (zone->type == BLK_ZONE_TYPE_CONVENTIONAL)
|
||||||
cmd->error = BLK_STS_IOERR;
|
return BLK_STS_IOERR;
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
zone->cond = BLK_ZONE_COND_EMPTY;
|
zone->cond = BLK_ZONE_COND_EMPTY;
|
||||||
zone->wp = zone->start;
|
zone->wp = zone->start;
|
||||||
|
@ -149,4 +145,20 @@ void null_zone_reset(struct nullb_cmd *cmd, sector_t sector)
|
||||||
cmd->error = BLK_STS_NOTSUPP;
|
cmd->error = BLK_STS_NOTSUPP;
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
|
return BLK_STS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
inline blk_status_t null_handle_zoned(struct nullb_cmd *cmd,
|
||||||
|
enum req_opf op, sector_t sector,
|
||||||
|
sector_t nr_sectors)
|
||||||
|
{
|
||||||
|
switch (op) {
|
||||||
|
case REQ_OP_WRITE:
|
||||||
|
return null_zone_write(cmd, sector, nr_sectors);
|
||||||
|
case REQ_OP_ZONE_RESET:
|
||||||
|
case REQ_OP_ZONE_RESET_ALL:
|
||||||
|
return null_zone_reset(cmd, sector);
|
||||||
|
default:
|
||||||
|
return BLK_STS_OK;
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in New Issue