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[SCSI] ibmvscsi: handle large scatter/gather lists

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The maximum size of a scatter-gather list that the current IBM VSCSI
Client can handle is 10.  This patch adds large scatter-gather support
to the client so that it is capable of handling up to SG_ALL(255)
number of requests in the scatter-gather list.

Signed-off-by: Linda Xie <lxie@us.ibm.com>
Acked by: Dave C Boutcher <sleddog@us.ibm.com>

Rejections fixed up and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley
2005-09-06 17:11:54 -05:00
parent 1aab60c25e
commit 4dddbc26c3
2 changed files with 121 additions and 47 deletions
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drivers/scsi/ibmvscsi/ibmvscsi.h
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@@ -68,6 +68,8 @@ struct srp_event_struct {
void (*cmnd_done) (struct scsi_cmnd *);
struct completion comp;
union viosrp_iu *sync_srp;
struct memory_descriptor *ext_list;
dma_addr_t ext_list_token;
};
/* a pool of event structs for use */