From 72a0e5e2e2e6b577343c79013611ad5701e94482 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 23 Apr 2012 11:35:30 -0400 Subject: [PATCH] target: remove the task_lba field in struct se_task Now that we don't split commands the lba field in the task is always equivalent to the one in the CDB, even in cases where we have two tasks due to a BIDI transfer. Just refer the the lba in the command instead of duplicating it in the task. Signed-off-by: Christoph Hellwig Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_file.c | 9 +++++---- drivers/target/target_core_iblock.c | 10 +++++----- drivers/target/target_core_rd.c | 6 ++++-- drivers/target/target_core_transport.c | 1 - include/target/target_core_base.h | 1 - 5 files changed, 14 insertions(+), 13 deletions(-) diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c index c3e899e..4343cfd 100644 --- a/drivers/target/target_core_file.c +++ b/drivers/target/target_core_file.c @@ -273,7 +273,7 @@ static int fd_do_readv(struct se_task *task) struct scatterlist *sg = task->task_sg; struct iovec *iov; mm_segment_t old_fs; - loff_t pos = (task->task_lba * + loff_t pos = (task->task_se_cmd->t_task_lba * se_dev->se_sub_dev->se_dev_attrib.block_size); int ret = 0, i; @@ -326,7 +326,7 @@ static int fd_do_writev(struct se_task *task) struct scatterlist *sg = task->task_sg; struct iovec *iov; mm_segment_t old_fs; - loff_t pos = (task->task_lba * + loff_t pos = (task->task_se_cmd->t_task_lba * se_dev->se_sub_dev->se_dev_attrib.block_size); int ret, i = 0; @@ -402,12 +402,13 @@ static void fd_emulate_write_fua(struct se_cmd *cmd, struct se_task *task) { struct se_device *dev = cmd->se_dev; struct fd_dev *fd_dev = dev->dev_ptr; - loff_t start = task->task_lba * dev->se_sub_dev->se_dev_attrib.block_size; + loff_t start = task->task_se_cmd->t_task_lba * + dev->se_sub_dev->se_dev_attrib.block_size; loff_t end = start + task->task_size; int ret; pr_debug("FILEIO: FUA WRITE LBA: %llu, bytes: %u\n", - task->task_lba, task->task_size); + task->task_se_cmd->t_task_lba, task->task_size); ret = vfs_fsync_range(fd_dev->fd_file, start, end, 1); if (ret != 0) diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 2ec299e..311f43b 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -536,13 +536,13 @@ static int iblock_do_task(struct se_task *task) * struct se_task SCSI blocksize into Linux/Block 512 units for BIO. */ if (dev->se_sub_dev->se_dev_attrib.block_size == 4096) - block_lba = (task->task_lba << 3); + block_lba = (cmd->t_task_lba << 3); else if (dev->se_sub_dev->se_dev_attrib.block_size == 2048) - block_lba = (task->task_lba << 2); + block_lba = (cmd->t_task_lba << 2); else if (dev->se_sub_dev->se_dev_attrib.block_size == 1024) - block_lba = (task->task_lba << 1); + block_lba = (cmd->t_task_lba << 1); else if (dev->se_sub_dev->se_dev_attrib.block_size == 512) - block_lba = task->task_lba; + block_lba = cmd->t_task_lba; else { pr_err("Unsupported SCSI -> BLOCK LBA conversion:" " %u\n", dev->se_sub_dev->se_dev_attrib.block_size); @@ -646,7 +646,7 @@ static void iblock_bio_done(struct bio *bio, int err) return; pr_debug("done[%p] bio: %p task_lba: %llu bio_lba: %llu err=%d\n", - task, bio, task->task_lba, + task, bio, task->task_se_cmd->t_task_lba, (unsigned long long)bio->bi_sector, err); transport_complete_task(task, !atomic_read(&ibr->ib_bio_err_cnt)); diff --git a/drivers/target/target_core_rd.c b/drivers/target/target_core_rd.c index 35c64d1..0bec572 100644 --- a/drivers/target/target_core_rd.c +++ b/drivers/target/target_core_rd.c @@ -303,7 +303,8 @@ static int rd_do_task(struct se_task *task) u32 src_len; u64 tmp; - tmp = task->task_lba * se_dev->se_sub_dev->se_dev_attrib.block_size; + tmp = task->task_se_cmd->t_task_lba * + se_dev->se_sub_dev->se_dev_attrib.block_size; rd_offset = do_div(tmp, PAGE_SIZE); rd_page = tmp; rd_size = task->task_size; @@ -318,7 +319,8 @@ static int rd_do_task(struct se_task *task) dev->rd_dev_id, task->task_data_direction == DMA_FROM_DEVICE ? "Read" : "Write", - task->task_lba, rd_size, rd_page, rd_offset); + task->task_se_cmd->t_task_lba, + rd_size, rd_page, rd_offset); src_len = PAGE_SIZE - rd_offset; sg_miter_start(&m, task->task_sg, task->task_sg_nents, diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 2b84521..0fb3521 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -3724,7 +3724,6 @@ transport_allocate_data_tasks(struct se_cmd *cmd, task->task_sg_nents = sgl_nents; task->task_size = cmd->data_length; - task->task_lba = cmd->t_task_lba; task->task_sectors = sectors; spin_lock_irqsave(&cmd->t_state_lock, flags); diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 8ec4e82..df5a467 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -486,7 +486,6 @@ struct se_queue_obj { }; struct se_task { - unsigned long long task_lba; u32 task_sectors; u32 task_size; struct se_cmd *task_se_cmd; -- 2.7.4