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target: clean up the backend interface to caching parameters

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Remove the dpo_emulated, fua_write_emulated, fua_read_emulated and
write_cache_emulated methods, and replace them with a simple bitfields in
se_subsystem_api in those cases where they ever returned one.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Christoph Hellwig
2011-10-14 07:30:17 -04:00
committed by Nicholas Bellinger
parent df5fa691ce
commit f55918fa32
4 changed files with 23 additions and 119 deletions
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33
drivers/target/target_core_file.c
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@@ -399,33 +399,6 @@ static void fd_emulate_sync_cache(struct se_task *task)
transport_complete_sync_cache(cmd, ret == 0);
}
/*
* Tell TCM Core that we are capable of WriteCache emulation for
* an underlying struct se_device.
*/
static int fd_emulated_write_cache(struct se_device *dev)
{
return 1;
}
static int fd_emulated_dpo(struct se_device *dev)
{
return 0;
}
/*
* Tell TCM Core that we will be emulating Forced Unit Access (FUA) for WRITEs
* for TYPE_DISK.
*/
static int fd_emulated_fua_write(struct se_device *dev)
{
return 1;
}
static int fd_emulated_fua_read(struct se_device *dev)
{
return 0;
}
/*
* WRITE Force Unit Access (FUA) emulation on a per struct se_task
* LBA range basis..
@@ -640,15 +613,13 @@ static struct se_subsystem_api fileio_template = {
.name = "fileio",
.owner = THIS_MODULE,
.transport_type = TRANSPORT_PLUGIN_VHBA_PDEV,
.write_cache_emulated = 1,
.fua_write_emulated = 1,
.attach_hba = fd_attach_hba,
.detach_hba = fd_detach_hba,
.allocate_virtdevice = fd_allocate_virtdevice,
.create_virtdevice = fd_create_virtdevice,
.free_device = fd_free_device,
.dpo_emulated = fd_emulated_dpo,
.fua_write_emulated = fd_emulated_fua_write,
.fua_read_emulated = fd_emulated_fua_read,
.write_cache_emulated = fd_emulated_write_cache,
.alloc_task = fd_alloc_task,
.do_task = fd_do_task,
.do_sync_cache = fd_emulate_sync_cache,