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| author | Andy Grover <agrover@redhat.com> | 2012-01-16 16:57:08 -0800 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-01-18 08:35:58 +0000 |
| commit | 4949314c7283ea4f9ade182ca599583b89f7edd6 (patch) | |
| tree | bbd2316996bc2f19c1b3a8c24f8591f12d2330fa /drivers/target/target_core_device.c | |
| parent | e8904dc5008ef92f0f62391d6557f03f921eeb32 (diff) | |
| download | linux-4949314c7283ea4f9ade182ca599583b89f7edd6.tar.gz linux-4949314c7283ea4f9ade182ca599583b89f7edd6.tar.xz linux-4949314c7283ea4f9ade182ca599583b89f7edd6.zip | |
target: Allow control CDBs with data > 1 page
We need to handle >1 page control cdbs, so extend the code to do a vmap
if bigger than 1 page. It seems like kmap() is still preferable if just
a page, fewer TLB shootdowns(?), so keep using that when possible.
Rename function pair for their new scope.
Signed-off-by: Andy Grover <agrover@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_device.c')
| -rw-r--r-- | drivers/target/target_core_device.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index de5f4fea7f62..edbcabbf85f7 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -657,7 +657,7 @@ int target_report_luns(struct se_task *se_task) unsigned char *buf; u32 cdb_offset = 0, lun_count = 0, offset = 8, i; - buf = transport_kmap_first_data_page(se_cmd); + buf = (unsigned char *) transport_kmap_data_sg(se_cmd); /* * If no struct se_session pointer is present, this struct se_cmd is @@ -695,7 +695,7 @@ int target_report_luns(struct se_task *se_task) * See SPC3 r07, page 159. */ done: - transport_kunmap_first_data_page(se_cmd); + transport_kunmap_data_sg(se_cmd); lun_count *= 8; buf[0] = ((lun_count >> 24) & 0xff); buf[1] = ((lun_count >> 16) & 0xff); |