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| author |   Bart Van Assche <bvanassche@acm.org> | 2019-01-25 10:34:50 -0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2019-02-04 21:31:37 -0500 |
| commit | fd1b6687091450b0ca3303c97f45ecd87401c3d7 (patch) | |
| tree | fd501bf5ed6adf087faf2ffa22fbf1a949f569cf /drivers/infiniband/ulp/srpt/ib_srpt.h | |
| parent | scsi: RDMA/srpt: Fix handling of TMF submission failure (diff) | |
| download | linux-dev-fd1b6687091450b0ca3303c97f45ecd87401c3d7.tar.xz linux-dev-fd1b6687091450b0ca3303c97f45ecd87401c3d7.zip | |
scsi: RDMA/srpt: Rework I/O context allocation
Instead of maintaining a list of free I/O contexts, use an sbitmap data
structure to track which I/O contexts are in use and which are free. This
makes the ib_srpt driver more consistent with other LIO drivers.
Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Cc: Mike Christie <mchristi@redhat.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/infiniband/ulp/srpt/ib_srpt.h')
| -rw-r--r-- | drivers/infiniband/ulp/srpt/ib_srpt.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.h b/drivers/infiniband/ulp/srpt/ib_srpt.h index 39b3e50baf3d..ee9f20e9177a 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.h +++ b/drivers/infiniband/ulp/srpt/ib_srpt.h @@ -207,7 +207,6 @@ struct srpt_rw_ctx { * @rw_ctxs: RDMA read/write contexts. * @imm_sg: Scatterlist for immediate data. * @rdma_cqe: RDMA completion queue element. - * @free_list: Node in srpt_rdma_ch.free_list. * @state: I/O context state. * @cmd: Target core command data structure. * @sense_data: SCSI sense data. @@ -227,7 +226,6 @@ struct srpt_send_ioctx { struct scatterlist imm_sg; struct ib_cqe rdma_cqe; - struct list_head free_list; enum srpt_command_state state; struct se_cmd cmd; u8 n_rdma; @@ -277,7 +275,6 @@ enum rdma_ch_state { * @req_lim_delta: Number of credits not yet sent back to the initiator. * @imm_data_offset: Offset from start of SRP_CMD for immediate data. * @spinlock: Protects free_list and state. - * @free_list: Head of list with free send I/O contexts. * @state: channel state. See also enum rdma_ch_state. * @using_rdma_cm: Whether the RDMA/CM or IB/CM is used for this channel. * @processing_wait_list: Whether or not cmd_wait_list is being processed. @@ -318,7 +315,6 @@ struct srpt_rdma_ch { atomic_t req_lim_delta; u16 imm_data_offset; spinlock_t spinlock; - struct list_head free_list; enum rdma_ch_state state; struct kmem_cache *rsp_buf_cache; struct srpt_send_ioctx **ioctx_ring; |