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iser-target: Kill the ->isert_cmd back pointer in struct iser_tx_desc

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We only use the pointer when processing regular iSER commands, and it then
always points to the struct iser_cmd that contains the TX descriptor.

Remove it and rely on container_of to save a little space and avoid a
pointer that is updated multiple times per processed command.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig
2016-02-24 19:24:08 +02:00
committed by Nicholas Bellinger
parent d1ca2ed7dc
commit e3416ab2d1
2 changed files with 8 additions and 9 deletions
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6
drivers/infiniband/ulp/isert/ib_isert.h
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@@ -110,7 +110,6 @@ struct iser_tx_desc {
struct ib_sge tx_sg[2];
struct ib_cqe tx_cqe;
int num_sge;
struct isert_cmd *isert_cmd;
struct ib_send_wr send_wr;
} __packed;
@@ -181,6 +180,11 @@ struct isert_cmd {
struct scatterlist sg;
};
static inline struct isert_cmd *tx_desc_to_cmd(struct iser_tx_desc *desc)
{
return container_of(desc, struct isert_cmd, tx_desc);
}
struct isert_device;
struct isert_conn {