[PATCH 15/25] target: add gfp_t arg to target_cmd_init_cdb
From: Mike Christie <michael.christie@oracle.com>
Date: 2021-02-17 20:33:45
Also in:
target-devel
Subsystem:
infiniband subsystem, qlogic qla2xxx fc-scsi driver, scsi rdma protocol (srp) target, scsi subsystem, scsi target subsystem, the rest, virtio host (vhost), virtio host (vhost-scsi), xen hypervisor interface, xen pvscsi drivers · Maintainers:
Jason Gunthorpe, Leon Romanovsky, Nilesh Javali, Bart Van Assche, "James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds, "Michael S. Tsirkin", Jason Wang, Mike Christie, Juergen Gross, Stefano Stabellini
tcm_loop could be used like a normal block device, so we can't use GFP_KERNEL. This adds a gfp_t arg to target_cmd_init_cdb and covnerts the users. For every driver but loop I kept GFP_KERNEL. For loop and xcopy I switched to GFP_NOIO. This will also be useful in the later patches where loop needs to do target_submit_prep from interrupt context to get a ref to the se_device, and so it will need to use GFP_ATOMIC. Signed-off-by: Mike Christie <michael.christie@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Laurence Oberman <redacted> --- drivers/infiniband/ulp/srpt/ib_srpt.c | 3 ++- drivers/scsi/qla2xxx/tcm_qla2xxx.c | 3 ++- drivers/target/iscsi/iscsi_target.c | 3 ++- drivers/target/loopback/tcm_loop.c | 3 ++- drivers/target/target_core_transport.c | 14 ++++++++------ drivers/target/target_core_xcopy.c | 2 +- drivers/target/tcm_fc/tfc_cmd.c | 2 +- drivers/vhost/scsi.c | 2 +- drivers/xen/xen-scsiback.c | 2 +- include/target/target_core_fabric.h | 5 +++-- 10 files changed, 23 insertions(+), 16 deletions(-)
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 87741e0b4bca..51c386a215f5 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c@@ -1537,7 +1537,8 @@ static void srpt_handle_cmd(struct srpt_rdma_ch *ch, goto busy; } - if (target_submit_prep(cmd, srp_cmd->cdb, sg, sg_cnt, NULL, 0, NULL, 0)) + if (target_submit_prep(cmd, srp_cmd->cdb, sg, sg_cnt, NULL, 0, NULL, 0, + GFP_KERNEL)) return; target_submit(cmd);
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 56394d901791..12a2265eb2de 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c@@ -492,7 +492,8 @@ static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, if (rc) return rc; - if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0, NULL, 0)) + if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0, NULL, 0, + GFP_KERNEL)) return 0; target_submit(se_cmd);
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index f2107705f2ea..566adfde1661 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c@@ -1166,7 +1166,8 @@ int iscsit_setup_scsi_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd, target_get_sess_cmd(&cmd->se_cmd, true); - cmd->sense_reason = target_cmd_init_cdb(&cmd->se_cmd, hdr->cdb); + cmd->sense_reason = target_cmd_init_cdb(&cmd->se_cmd, hdr->cdb, + GFP_KERNEL); if (cmd->sense_reason) { if (cmd->sense_reason == TCM_OUT_OF_RESOURCES) { return iscsit_add_reject_cmd(cmd,
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 461f4125fcab..677e4b8f0642 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c@@ -156,7 +156,8 @@ static void tcm_loop_submission_work(struct work_struct *work) if (target_submit_prep(se_cmd, sc->cmnd, scsi_sglist(sc), scsi_sg_count(sc), sgl_bidi, sgl_bidi_count, - scsi_prot_sglist(sc), scsi_prot_sg_count(sc))) + scsi_prot_sglist(sc), scsi_prot_sg_count(sc), + GFP_NOIO)) return; target_submit(se_cmd);
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 1f35cce6e92b..6c88ca832da6 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c@@ -1427,7 +1427,7 @@ transport_check_alloc_task_attr(struct se_cmd *cmd) } sense_reason_t -target_cmd_init_cdb(struct se_cmd *cmd, unsigned char *cdb) +target_cmd_init_cdb(struct se_cmd *cmd, unsigned char *cdb, gfp_t gfp) { sense_reason_t ret;
@@ -1448,8 +1448,7 @@ target_cmd_init_cdb(struct se_cmd *cmd, unsigned char *cdb) * setup the pointer from __t_task_cdb to t_task_cdb. */ if (scsi_command_size(cdb) > sizeof(cmd->__t_task_cdb)) { - cmd->t_task_cdb = kzalloc(scsi_command_size(cdb), - GFP_KERNEL); + cmd->t_task_cdb = kzalloc(scsi_command_size(cdb), gfp); if (!cmd->t_task_cdb) { pr_err("Unable to allocate cmd->t_task_cdb" " %u > sizeof(cmd->__t_task_cdb): %lu ops\n",
@@ -1638,6 +1637,7 @@ EXPORT_SYMBOL_GPL(target_init_cmd); * @sgl_bidi_count: scatterlist count for bidirectional READ mapping * @sgl_prot: struct scatterlist memory protection information * @sgl_prot_count: scatterlist count for protection information + * @gfp_t: gfp allocation type * * Returns: * - less than zero to signal failure.
@@ -1648,11 +1648,12 @@ EXPORT_SYMBOL_GPL(target_init_cmd); int target_submit_prep(struct se_cmd *se_cmd, unsigned char *cdb, struct scatterlist *sgl, u32 sgl_count, struct scatterlist *sgl_bidi, u32 sgl_bidi_count, - struct scatterlist *sgl_prot, u32 sgl_prot_count) + struct scatterlist *sgl_prot, u32 sgl_prot_count, + gfp_t gfp) { sense_reason_t rc; - rc = target_cmd_init_cdb(se_cmd, cdb); + rc = target_cmd_init_cdb(se_cmd, cdb, gfp); if (rc) goto send_cc_direct;
@@ -1788,7 +1789,8 @@ void target_submit_cmd(struct se_cmd *se_cmd, struct se_session *se_sess, if (rc) return; - if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0, NULL, 0)) + if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0, NULL, 0, + GFP_KERNEL)) return; target_submit(se_cmd);
diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c
index e86cc6135587..d31ed071cb08 100644
--- a/drivers/target/target_core_xcopy.c
+++ b/drivers/target/target_core_xcopy.c@@ -554,7 +554,7 @@ static int target_xcopy_setup_pt_cmd( } cmd->se_cmd_flags |= SCF_SE_LUN_CMD; - if (target_cmd_init_cdb(cmd, cdb)) + if (target_cmd_init_cdb(cmd, cdb, GFP_KERNEL)) return -EINVAL; cmd->tag = 0;
diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c
index 1376501ee3d0..410b723f9d79 100644
--- a/drivers/target/tcm_fc/tfc_cmd.c
+++ b/drivers/target/tcm_fc/tfc_cmd.c@@ -555,7 +555,7 @@ static void ft_send_work(struct work_struct *work) goto err; if (target_submit_prep(&cmd->se_cmd, fcp->fc_cdb, NULL, 0, NULL, 0, - NULL, 0)) + NULL, 0, GFP_KERNEL)) return; target_submit(&cmd->se_cmd);
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index 76508d408bb3..93f5631b469c 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c@@ -811,7 +811,7 @@ static void vhost_scsi_submission_work(struct work_struct *work) if (target_submit_prep(se_cmd, cmd->tvc_cdb, sg_ptr, cmd->tvc_sgl_count, NULL, 0, sg_prot_ptr, - cmd->tvc_prot_sgl_count)) + cmd->tvc_prot_sgl_count, GFP_KERNEL)) return; target_submit(se_cmd);
diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index 7bf9a6bede6d..eb3d8e35cbcd 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c@@ -368,7 +368,7 @@ static void scsiback_cmd_exec(struct vscsibk_pend *pending_req) pending_req->sc_data_direction, TARGET_SCF_ACK_KREF); if (target_submit_prep(se_cmd, pending_req->cmnd, pending_req->sgl, - pending_req->n_sg, NULL, 0, NULL, 0)) + pending_req->n_sg, NULL, 0, NULL, 0, GFP_KERNEL)) return; target_submit(se_cmd);
diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h
index 86b0d4a7df92..0543ab107723 100644
--- a/include/target/target_core_fabric.h
+++ b/include/target/target_core_fabric.h@@ -157,10 +157,11 @@ int target_init_cmd(struct se_cmd *se_cmd, struct se_session *se_sess, int target_submit_prep(struct se_cmd *se_cmd, unsigned char *cdb, struct scatterlist *sgl, u32 sgl_count, struct scatterlist *sgl_bidi, u32 sgl_bidi_count, - struct scatterlist *sgl_prot, u32 sgl_prot_count); + struct scatterlist *sgl_prot, u32 sgl_prot_count, gfp_t gfp); void target_submit(struct se_cmd *se_cmd); sense_reason_t transport_lookup_cmd_lun(struct se_cmd *); -sense_reason_t target_cmd_init_cdb(struct se_cmd *, unsigned char *); +sense_reason_t target_cmd_init_cdb(struct se_cmd *se_cmd, unsigned char *cdb, + gfp_t gfp); sense_reason_t target_cmd_parse_cdb(struct se_cmd *); void target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *, unsigned char *, u64, u32, int, int, int);
--
2.25.1