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authorNicholas Bellinger <nab@daterainc.com>2013-08-20 10:45:16 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2013-09-09 14:29:33 -0700
commit47e459e622f07c2564e6be8412d75389d2a807b8 (patch)
tree685709343f949e5cc858e8657dba5d2bd79d91ca /include
parent8cefe07b5e9c2b0212ad6809a219e4489807a746 (diff)
downloadlinux-stericsson-47e459e622f07c2564e6be8412d75389d2a807b8.tar.gz
target: Add transport_reset_sgl_orig() for COMPARE_AND_WRITE
After COMPARE_AND_WRITE completes it's comparision, the WRITE payload SGLs head expect to be updated to point from the verify instance of user data, to the write instance of user data. So for this special case, add transport_reset_sgl_orig() usage within transport_free_pages() and add se_cmd->t_data_[sg,nents]_orig members to save the original assignments. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Chris Mason <chris.mason@fusionio.com> Cc: James Bottomley <JBottomley@Parallels.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@daterainc.com>
Diffstat (limited to 'include')
-rw-r--r--include/target/target_core_base.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 4a26a18a24d6..7fdb3fae2961 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -478,7 +478,9 @@ struct se_cmd {
struct work_struct work;
struct scatterlist *t_data_sg;
+ struct scatterlist *t_data_sg_orig;
unsigned int t_data_nents;
+ unsigned int t_data_nents_orig;
void *t_data_vmap;
struct scatterlist *t_bidi_data_sg;
unsigned int t_bidi_data_nents;