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target: move sync_cache to struct spc_ops 

Add spc_ops->execute_sync_cache() caller for ->execute_cmd() setup,
and update IBLOCK + FILEIO backends to use it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig 2012-06-17 18:40:53 -04:00 committed by Nicholas Bellinger
parent 0c2ad7d113
commit ad67f0d9e6
4 changed files with 13 additions and 20 deletions
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8
drivers/target/target_core_file.c
View File

@ -331,7 +331,7 @@ static int fd_do_writev(struct se_cmd *cmd, struct scatterlist *sgl,
return 1;
}
static void fd_emulate_sync_cache(struct se_cmd *cmd)
static int fd_execute_sync_cache(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
struct fd_dev *fd_dev = dev->dev_ptr;
@ -365,7 +365,7 @@ static void fd_emulate_sync_cache(struct se_cmd *cmd)
pr_err("FILEIO: vfs_fsync_range() failed: %d\n", ret);
if (immed)
return;
return 0;
if (ret) {
cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
@ -373,6 +373,8 @@ static void fd_emulate_sync_cache(struct se_cmd *cmd)
} else {
target_complete_cmd(cmd, SAM_STAT_GOOD);
}
return 0;
}
static int fd_execute_rw(struct se_cmd *cmd)
@ -554,6 +556,7 @@ static sector_t fd_get_blocks(struct se_device *dev)
static struct spc_ops fd_spc_ops = {
.execute_rw = fd_execute_rw,
.execute_sync_cache = fd_execute_sync_cache,
};
static int fd_parse_cdb(struct se_cmd *cmd)
@ -573,7 +576,6 @@ static struct se_subsystem_api fileio_template = {
.create_virtdevice = fd_create_virtdevice,
.free_device = fd_free_device,
.parse_cdb = fd_parse_cdb,
.do_sync_cache = fd_emulate_sync_cache,
.check_configfs_dev_params = fd_check_configfs_dev_params,
.set_configfs_dev_params = fd_set_configfs_dev_params,
.show_configfs_dev_params = fd_show_configfs_dev_params,

5
drivers/target/target_core_iblock.c
View File

@ -296,7 +296,7 @@ static void iblock_end_io_flush(struct bio *bio, int err)
* Implement SYCHRONIZE CACHE. Note that we can't handle lba ranges and must
* always flush the whole cache.
*/
static void iblock_emulate_sync_cache(struct se_cmd *cmd)
static int iblock_execute_sync_cache(struct se_cmd *cmd)
{
struct iblock_dev *ib_dev = cmd->se_dev->dev_ptr;
int immed = (cmd->t_task_cdb[1] & 0x2);
@ -315,6 +315,7 @@ static void iblock_emulate_sync_cache(struct se_cmd *cmd)
if (!immed)
bio->bi_private = cmd;
submit_bio(WRITE_FLUSH, bio);
return 0;
}
static int iblock_do_discard(struct se_device *dev, sector_t lba, u32 range)
@ -667,6 +668,7 @@ static void iblock_bio_done(struct bio *bio, int err)
static struct spc_ops iblock_spc_ops = {
.execute_rw = iblock_execute_rw,
.execute_sync_cache = iblock_execute_sync_cache,
};
static int iblock_parse_cdb(struct se_cmd *cmd)
@ -687,7 +689,6 @@ static struct se_subsystem_api iblock_template = {
.free_device = iblock_free_device,
.parse_cdb = iblock_parse_cdb,
.do_discard = iblock_do_discard,
.do_sync_cache = iblock_emulate_sync_cache,
.check_configfs_dev_params = iblock_check_configfs_dev_params,
.set_configfs_dev_params = iblock_set_configfs_dev_params,
.show_configfs_dev_params = iblock_show_configfs_dev_params,

18
drivers/target/target_core_sbc.c
View File

@ -204,19 +204,6 @@ static int sbc_emulate_write_same(struct se_cmd *cmd)
return 0;
}
static int sbc_emulate_synchronize_cache(struct se_cmd *cmd)
{
if (!cmd->se_dev->transport->do_sync_cache) {
pr_err("SYNCHRONIZE_CACHE emulation not supported"
" for: %s\n", cmd->se_dev->transport->name);
cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
return -ENOSYS;
}
cmd->se_dev->transport->do_sync_cache(cmd);
return 0;
}
static int sbc_emulate_verify(struct se_cmd *cmd)
{
target_complete_cmd(cmd, GOOD);
@ -541,6 +528,9 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct spc_ops *ops)
break;
case SYNCHRONIZE_CACHE:
case SYNCHRONIZE_CACHE_16:
if (!ops->execute_sync_cache)
goto out_unsupported_cdb;
/*
* Extract LBA and range to be flushed for emulated SYNCHRONIZE_CACHE
*/
@ -562,7 +552,7 @@ int sbc_parse_cdb(struct se_cmd *cmd, struct spc_ops *ops)
if (sbc_check_valid_sectors(cmd) < 0)
goto out_invalid_cdb_field;
}
cmd->execute_cmd = sbc_emulate_synchronize_cache;
cmd->execute_cmd = ops->execute_sync_cache;
break;
case UNMAP:
size = get_unaligned_be16(&cdb[7]);

2
include/target/target_core_backend.h
View File

@ -27,7 +27,6 @@ struct se_subsystem_api {
int (*parse_cdb)(struct se_cmd *cmd);
int (*do_discard)(struct se_device *, sector_t, u32);
void (*do_sync_cache)(struct se_cmd *);
ssize_t (*check_configfs_dev_params)(struct se_hba *,
struct se_subsystem_dev *);
ssize_t (*set_configfs_dev_params)(struct se_hba *,
@ -42,6 +41,7 @@ struct se_subsystem_api {
struct spc_ops {
int (*execute_rw)(struct se_cmd *cmd);
int (*execute_sync_cache)(struct se_cmd *cmd);
};
int transport_subsystem_register(struct se_subsystem_api *);