iscsi-target: Convert gfp_t parameter to task state bitmask

This patch propigates the use of task state bitmask now used by
percpu_ida_alloc() up the iscsi-target callchain, replacing the
use of GFP_ATOMIC for TASK_RUNNING, and GFP_KERNEL for
TASK_INTERRUPTIBLE.

Also, drop the unnecessary gfp_t parameter to isert_allocate_cmd(),
and just pass TASK_INTERRUPTIBLE into iscsit_allocate_cmd().

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c
index 421182b..63bcf69 100644 (file)
--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -1028,13 +1028,13 @@ isert_rx_login_req(struct iser_rx_desc *rx_desc, int rx_buflen,
 }
 
 static struct iscsi_cmd
-*isert_allocate_cmd(struct iscsi_conn *conn, gfp_t gfp)
+*isert_allocate_cmd(struct iscsi_conn *conn)
 {
        struct isert_conn *isert_conn = (struct isert_conn *)conn->context;
        struct isert_cmd *isert_cmd;
        struct iscsi_cmd *cmd;
 
-       cmd = iscsit_allocate_cmd(conn, gfp);
+       cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
        if (!cmd) {
                pr_err("Unable to allocate iscsi_cmd + isert_cmd\n");
                return NULL;
@@ -1223,7 +1223,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
 
        switch (opcode) {
        case ISCSI_OP_SCSI_CMD:
-               cmd = isert_allocate_cmd(conn, GFP_KERNEL);
+               cmd = isert_allocate_cmd(conn);
                if (!cmd)
                        break;
 
@@ -1237,7 +1237,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
                                        rx_desc, (unsigned char *)hdr);
                break;
        case ISCSI_OP_NOOP_OUT:
-               cmd = isert_allocate_cmd(conn, GFP_KERNEL);
+               cmd = isert_allocate_cmd(conn);
                if (!cmd)
                        break;
 
@@ -1250,7 +1250,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
                                                (unsigned char *)hdr);
                break;
        case ISCSI_OP_SCSI_TMFUNC:
-               cmd = isert_allocate_cmd(conn, GFP_KERNEL);
+               cmd = isert_allocate_cmd(conn);
                if (!cmd)
                        break;
 
@@ -1258,7 +1258,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
                                                (unsigned char *)hdr);
                break;
        case ISCSI_OP_LOGOUT:
-               cmd = isert_allocate_cmd(conn, GFP_KERNEL);
+               cmd = isert_allocate_cmd(conn);
                if (!cmd)
                        break;
 
@@ -1269,7 +1269,7 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
                                                    HZ);
                break;
        case ISCSI_OP_TEXT:
-               cmd = isert_allocate_cmd(conn, GFP_KERNEL);
+               cmd = isert_allocate_cmd(conn);
                if (!cmd)
                        break;
 

diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index d70e911..2a52752 100644 (file)
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -621,7 +621,7 @@ static int iscsit_add_reject(
 {
        struct iscsi_cmd *cmd;
 
-       cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
+       cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
        if (!cmd)
                return -1;
 
@@ -2476,7 +2476,7 @@ static void iscsit_build_conn_drop_async_message(struct iscsi_conn *conn)
        if (!conn_p)
                return;
 
-       cmd = iscsit_allocate_cmd(conn_p, GFP_ATOMIC);
+       cmd = iscsit_allocate_cmd(conn_p, TASK_RUNNING);
        if (!cmd) {
                iscsit_dec_conn_usage_count(conn_p);
                return;
@@ -3952,7 +3952,7 @@ static int iscsi_target_rx_opcode(struct iscsi_conn *conn, unsigned char *buf)
 
        switch (hdr->opcode & ISCSI_OPCODE_MASK) {
        case ISCSI_OP_SCSI_CMD:
-               cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
+               cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
                if (!cmd)
                        goto reject;
 
@@ -3964,28 +3964,28 @@ static int iscsi_target_rx_opcode(struct iscsi_conn *conn, unsigned char *buf)
        case ISCSI_OP_NOOP_OUT:
                cmd = NULL;
                if (hdr->ttt == cpu_to_be32(0xFFFFFFFF)) {
-                       cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
+                       cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
                        if (!cmd)
                                goto reject;
                }
                ret = iscsit_handle_nop_out(conn, cmd, buf);
                break;
        case ISCSI_OP_SCSI_TMFUNC:
-               cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
+               cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
                if (!cmd)
                        goto reject;
 
                ret = iscsit_handle_task_mgt_cmd(conn, cmd, buf);
                break;
        case ISCSI_OP_TEXT:
-               cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
+               cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
                if (!cmd)
                        goto reject;
 
                ret = iscsit_handle_text_cmd(conn, cmd, buf);
                break;
        case ISCSI_OP_LOGOUT:
-               cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);
+               cmd = iscsit_allocate_cmd(conn, TASK_INTERRUPTIBLE);
                if (!cmd)
                        goto reject;
 

diff --git a/drivers/target/iscsi/iscsi_target_util.c b/drivers/target/iscsi/iscsi_target_util.c
index 5477eca..e655b04 100644 (file)
--- a/drivers/target/iscsi/iscsi_target_util.c
+++ b/drivers/target/iscsi/iscsi_target_util.c
@@ -152,12 +152,11 @@ void iscsit_free_r2ts_from_list(struct iscsi_cmd *cmd)
  * May be called from software interrupt (timer) context for allocating
  * iSCSI NopINs.
  */
-struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *conn, gfp_t gfp_mask)
+struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *conn, int state)
 {
        struct iscsi_cmd *cmd;
        struct se_session *se_sess = conn->sess->se_sess;
-       int size, tag, state = (gfp_mask & __GFP_WAIT) ? TASK_INTERRUPTIBLE :
-                               TASK_RUNNING;
+       int size, tag;
 
        tag = percpu_ida_alloc(&se_sess->sess_tag_pool, state);
        if (tag < 0)
@@ -930,7 +929,7 @@ static int iscsit_add_nopin(struct iscsi_conn *conn, int want_response)
        u8 state;
        struct iscsi_cmd *cmd;
 
-       cmd = iscsit_allocate_cmd(conn, GFP_ATOMIC);
+       cmd = iscsit_allocate_cmd(conn, TASK_RUNNING);
        if (!cmd)
                return -1;
 

diff --git a/drivers/target/iscsi/iscsi_target_util.h b/drivers/target/iscsi/iscsi_target_util.h
index e4fc34a..561a424 100644 (file)
--- a/drivers/target/iscsi/iscsi_target_util.h
+++ b/drivers/target/iscsi/iscsi_target_util.h
@@ -9,7 +9,7 @@ extern struct iscsi_r2t *iscsit_get_r2t_from_list(struct iscsi_cmd *);
 extern void iscsit_free_r2t(struct iscsi_r2t *, struct iscsi_cmd *);
 extern void iscsit_free_r2ts_from_list(struct iscsi_cmd *);
 extern struct iscsi_cmd *iscsit_alloc_cmd(struct iscsi_conn *, gfp_t);
-extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, gfp_t);
+extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, int);
 extern struct iscsi_seq *iscsit_get_seq_holder_for_datain(struct iscsi_cmd *, u32);
 extern struct iscsi_seq *iscsit_get_seq_holder_for_r2t(struct iscsi_cmd *);
 extern struct iscsi_r2t *iscsit_get_holder_for_r2tsn(struct iscsi_cmd *, u32);

diff --git a/include/target/iscsi/iscsi_transport.h b/include/target/iscsi/iscsi_transport.h
index a12589c..ae5a171 100644 (file)
--- a/include/target/iscsi/iscsi_transport.h
+++ b/include/target/iscsi/iscsi_transport.h
@@ -94,7 +94,7 @@ extern int iscsit_tmr_post_handler(struct iscsi_cmd *, struct iscsi_conn *);
 /*
  * From iscsi_target_util.c
  */
-extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, gfp_t);
+extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, int);
 extern int iscsit_sequence_cmd(struct iscsi_conn *, struct iscsi_cmd *,
                               unsigned char *, __be32);
 extern void iscsit_release_cmd(struct iscsi_cmd *);