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target: simplify UNMAP handling

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Move a little more processing into the core code, and lift the previous
do_unmap callback into the sbc_ops structure.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig
2015-06-19 15:10:59 +02:00
committed by Nicholas Bellinger
parent 7a971b1b30
commit 62e4694256
4 changed files with 14 additions and 40 deletions
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include/target/target_core_backend.h
+2 -5
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@@ -50,7 +50,8 @@ struct sbc_ops {
sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd);
sense_reason_t (*execute_write_same)(struct se_cmd *cmd);
sense_reason_t (*execute_write_same_unmap)(struct se_cmd *cmd);
sense_reason_t (*execute_unmap)(struct se_cmd *cmd);
sense_reason_t (*execute_unmap)(struct se_cmd *cmd,
sector_t lba, sector_t nolb);
};
int transport_backend_register(const struct target_backend_ops *);
@@ -68,10 +69,6 @@ sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
u32 sbc_get_device_rev(struct se_device *dev);
u32 sbc_get_device_type(struct se_device *dev);
sector_t sbc_get_write_same_sectors(struct se_cmd *cmd);
sense_reason_t sbc_execute_unmap(struct se_cmd *cmd,
sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv,
sector_t lba, sector_t nolb),
void *priv);
void sbc_dif_generate(struct se_cmd *);
sense_reason_t sbc_dif_verify(struct se_cmd *, sector_t, unsigned int,
unsigned int, struct scatterlist *, int);