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Date: Tue, 02 Dec 2008 18:15:16 -0800
From: "Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To: "Linux-iSCSI.org Target Dev"
<linux-iscsi-target-dev@...glegroups.com>,
LKML <linux-kernel@...r.kernel.org>,
linux-scsi <linux-scsi@...r.kernel.org>
Cc: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
Boaz Harrosh <bharrosh@...asas.com>
Subject: [PATCH] [Target_Core_Mod]: Update PSCSI, IBLOCK, FILEIO and
RAMDISK for se_task_t->task_sg
>>From e030ca2b9bbb81402b3ed669bb5e1d54fed0dff7 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@...ux-iscsi.org>
Date: Tue, 2 Dec 2008 18:07:40 -0800
Subject: [PATCH] [Target_Core_Mod]: Update PSCSI, IBLOCK, FILEIO and RAMDISK for se_task_t->task_sg
This patch changes the generic target core subsystem plugins to use se_task_t->task_sg
and gets rid of a handful of casts from the original se_task_t->task_buf, which if present,
will always contain a contigious array of struct scatterlist memory.
Signed-off-by: Nicholas A. Bellinger <nab@...ux-iscsi.org>
---
drivers/lio-core/target_core_file.c | 12 ++++++------
drivers/lio-core/target_core_iblock.c | 4 ++--
drivers/lio-core/target_core_pscsi.c | 11 ++++-------
drivers/lio-core/target_core_rd.c | 2 +-
4 files changed, 13 insertions(+), 16 deletions(-)
diff --git a/drivers/lio-core/target_core_file.c b/drivers/lio-core/target_core_file.c
index 5b9b5dd..be1314d 100644
--- a/drivers/lio-core/target_core_file.c
+++ b/drivers/lio-core/target_core_file.c
@@ -586,7 +586,7 @@ static int fd_do_readv (fd_request_t *req, se_task_t *task)
u32 i;
mm_segment_t old_fs;
struct file *fd = req->fd_dev->fd_file;
- struct scatterlist *sg = (struct scatterlist *) req->fd_buf;
+ struct scatterlist *sg = task->task_sg;
struct iovec iov[req->fd_sg_count];
memset(iov, 0, sizeof(struct iovec) + req->fd_sg_count);
@@ -638,7 +638,7 @@ static int fd_do_aio_read (fd_request_t *req, se_task_t *task)
unsigned long long offset, lba = req->fd_lba;;
mm_segment_t old_fs;
struct file *fd = req->fd_dev->fd_file;
- struct scatterlist *sg = (struct scatterlist *) req->fd_buf;
+ struct scatterlist *sg = task->task_sg;
struct iovec *iov;
struct kiocb *iocb;
@@ -716,7 +716,7 @@ static int fd_sendactor (read_descriptor_t * desc, struct page *page, unsigned l
unsigned long count = desc->count;
se_task_t *task = desc->arg.data;
fd_request_t *req = (fd_request_t *) task->transport_req;
- struct scatterlist *sg = (struct scatterlist *) req->fd_buf;
+ struct scatterlist *sg = task->task_sg;
// PYXPRINT("page: %p offset: %lu size: %lu\n", page, offset, size);
@@ -767,7 +767,7 @@ static int fd_do_writev (fd_request_t *req, se_task_t *task)
int ret = 0;
u32 i;
struct file *fd = req->fd_dev->fd_file;
- struct scatterlist *sg = (struct scatterlist *) req->fd_buf;
+ struct scatterlist *sg = task->task_sg;
mm_segment_t old_fs;
struct iovec iov[req->fd_sg_count];
@@ -803,7 +803,7 @@ static int fd_do_aio_write (fd_request_t *req, se_task_t *task)
unsigned long long offset, lba = req->fd_lba;
mm_segment_t old_fs;
struct file *fd = req->fd_dev->fd_file;
- struct scatterlist *sg = (struct scatterlist *) req->fd_buf;
+ struct scatterlist *sg = task->task_sg;
struct iovec *iov;
struct kiocb *iocb;
@@ -1065,7 +1065,7 @@ extern void fd_map_task_SG (se_task_t *task)
fd_request_t *req = (fd_request_t *) task->transport_req;
req->fd_bufflen = task->task_size;
- req->fd_buf = (void *)task->task_buf;
+ req->fd_buf = NULL;
req->fd_sg_count = task->task_sg_num;
return;
diff --git a/drivers/lio-core/target_core_iblock.c b/drivers/lio-core/target_core_iblock.c
index 50e2a2a..962dc35 100644
--- a/drivers/lio-core/target_core_iblock.c
+++ b/drivers/lio-core/target_core_iblock.c
@@ -755,7 +755,7 @@ extern int iblock_map_task_SG (se_task_t *task)
iblock_dev_t *ib_dev = (iblock_dev_t *) task->iscsi_dev->dev_ptr;
iblock_req_t *ib_req = (iblock_req_t *) task->transport_req;
struct bio *bio = NULL, *hbio = NULL, *tbio = NULL;
- struct scatterlist *sg = (struct scatterlist *)task->task_buf;
+ struct scatterlist *sg = task->task_sg;
int ret = 0;
u32 i, sg_num = task->task_sg_num;
u64 lba = task->task_lba;
@@ -769,7 +769,7 @@ extern int iblock_map_task_SG (se_task_t *task)
hbio = tbio = bio;
/*
* Use fs/bio.c:bio_add_pages() to setup the bio_vec maplist
- * from LIO-SE se_mem_t -> task->task_buf -> struct scatterlist memory.
+ * from LIO-SE se_mem_t -> task->task_sg -> struct scatterlist memory.
*/
for (i = 0; i < task->task_sg_num; i++) {
DEBUG_IBLOCK("task: %p bio: %p Calling bio_add_page(): page: %p len:"
diff --git a/drivers/lio-core/target_core_pscsi.c b/drivers/lio-core/target_core_pscsi.c
index 862ad26..0ce57e6 100644
--- a/drivers/lio-core/target_core_pscsi.c
+++ b/drivers/lio-core/target_core_pscsi.c
@@ -1165,22 +1165,19 @@ extern int pscsi_map_task_SG (se_task_t *task)
pscsi_plugin_task_t *pt = (pscsi_plugin_task_t *) task->transport_req;
int ret = 0;
- pt->pscsi_buf = (void *)task->task_buf;
+ pt->pscsi_buf = (void *)task->task_sg;
if (!task->task_size)
return(0);
#if 0
if ((ret = blk_rq_map_sg(pdv->pdv_sd->request_queue,
- pt->pscsi_req,
- (struct scatterlist *)pt->pscsi_buf)) < 0) {
+ pt->pscsi_req, task->task_sg)) < 0) {
printk(KERN_ERR "PSCSI: blk_rq_map_sg() returned %d\n", ret);
return(PYX_TRANSPORT_LOGICAL_UNIT_COMMUNICATION_FAILURE);
}
#else
- if ((ret = scsi_req_map_sg(pt->pscsi_req,
- (struct scatterlist *)pt->pscsi_buf,
- task->task_sg_num, task->task_size,
- GFP_KERNEL)) < 0) {
+ if ((ret = scsi_req_map_sg(pt->pscsi_req, task->task_sg,
+ task->task_sg_num, task->task_size, GFP_KERNEL)) < 0) {
printk(KERN_ERR "PSCSI: scsi_req_map_sg() failed: %d\n", ret);
return(PYX_TRANSPORT_LOGICAL_UNIT_COMMUNICATION_FAILURE);
}
diff --git a/drivers/lio-core/target_core_rd.c b/drivers/lio-core/target_core_rd.c
index 3bc0d77..ac32e4b 100644
--- a/drivers/lio-core/target_core_rd.c
+++ b/drivers/lio-core/target_core_rd.c
@@ -1195,7 +1195,7 @@ extern void rd_map_task_SG (se_task_t *task)
rd_request_t *req = (rd_request_t *) task->transport_req;
req->rd_bufflen = task->task_size;
- req->rd_buf = (void *)task->task_buf;
+ req->rd_buf = task->task_sg;
req->rd_sg_count = task->task_sg_num;
return;
--
1.5.4.1
--
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