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target: Updates from AGrover and HCH (round 3)

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This patch contains a squashed version of third round series cleanups,
improvements ,and simplfications from Andy and Christoph ahead of the
heavy lifting between round 3 -> 4 for the target core SGL conversion.

This include cleanups to the main target I/O path and other miscellaneous
updates.

target: Replace custom sg<->buf functions with lib funcs
target: Simplify sector limiting code
target: get_cdb should never return NULL
target: Simplify transport_memcpy_se_mem_read_contig
target: Use assignment rather than increment for t_task_cdbs
target: Don't pass dma_size to generic_get_mem
target: Pass sg with type scatterlist in transport_map_sg_to_mem
target: Move task_sg_num next to task_sg in struct se_task
target: inline struct se_transport_task into struct se_cmd
target: Change name & semantics of transport_get_sectors()
target: Remove unused members of se_cmd
target: Rename se_cmd.t_task_cdbs to t_task_list_num
target: Fix some spelling
target: Remove unused var from transport_generic_do_tmr
target: map_sg_to_mem: return sg_count in return value
target/pscsi: Use min_t for sector limits
target/pscsi: Unused param for pscsi_get_bio()
target: Rename get_cdb_count to allocate_tasks
target: Make transport_generic_new_cmd() available for iscsi-target
target: Remove fabric callback to allocate iovecs
target: Fix transport_generic_new_cmd WRITE comment

(hch: Use __GFP_ZERO usage for alloc_pages() usage)

Signed-off-by: Andy Grover <agrover@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Andy Grover
2011-05-02 17:12:10 -07:00
committed by Nicholas Bellinger
parent dd3a5ad8e0
commit a1d8b49abd
17 changed files with 583 additions and 753 deletions
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8
drivers/target/target_core_file.c
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@@ -377,7 +377,7 @@ static void fd_emulate_sync_cache(struct se_task *task)
struct se_cmd *cmd = task->task_se_cmd;
struct se_device *dev = cmd->se_dev;
struct fd_dev *fd_dev = dev->dev_ptr;
int immed = (cmd->t_task.t_task_cdb[1] & 0x2);
int immed = (cmd->t_task_cdb[1] & 0x2);
loff_t start, end;
int ret;
@@ -391,11 +391,11 @@ static void fd_emulate_sync_cache(struct se_task *task)
/*
* Determine if we will be flushing the entire device.
*/
if (cmd->t_task.t_task_lba == 0 && cmd->data_length == 0) {
if (cmd->t_task_lba == 0 && cmd->data_length == 0) {
start = 0;
end = LLONG_MAX;
} else {
start = cmd->t_task.t_task_lba * dev->se_sub_dev->se_dev_attrib.block_size;
start = cmd->t_task_lba * dev->se_sub_dev->se_dev_attrib.block_size;
if (cmd->data_length)
end = start + cmd->data_length;
else
@@ -475,7 +475,7 @@ static int fd_do_task(struct se_task *task)
if (ret > 0 &&
dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0 &&
dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0 &&
cmd->t_task.t_tasks_fua) {
cmd->t_tasks_fua) {
/*
* We might need to be a bit smarter here
* and return some sense data to let the initiator