Merge branch 'blk-end-request' of git://git.kernel.dk/linux-2.6-block

[linux-2.6] / include / scsi / scsi_cmnd.h

diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 65ab5145a09befcc23a78de1090676d7f8fdd42e..a457fca66f6156c4b3629c06d10a71e4c453c5ee 100644 (file)
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -5,9 +5,9 @@
 #include <linux/list.h>
 #include <linux/types.h>
 #include <linux/timer.h>
+#include <linux/scatterlist.h>
 
 struct request;
-struct scatterlist;
 struct Scsi_Host;
 struct scsi_device;
 
@@ -67,8 +67,8 @@ struct scsi_cmnd {
        void *request_buffer;           /* Actual requested buffer */
 
        /* These elements define the operation we ultimately want to perform */
+       struct sg_table sg_table;
        unsigned short use_sg;  /* Number of pieces of scatter-gather */
-       unsigned short sglist_len;      /* size of malloc'd scatter-gather list */
 
        unsigned underflow;     /* Return error if less than
                                   this amount is transferred */
@@ -87,7 +87,7 @@ struct scsi_cmnd {
                                           working on */
 
 #define SCSI_SENSE_BUFFERSIZE  96
-       unsigned char sense_buffer[SCSI_SENSE_BUFFERSIZE];
+       unsigned char *sense_buffer;
                                /* obtained by REQUEST SENSE when
                                 * CHECK CONDITION is received on original
                                 * command (auto-sense) */
@@ -127,14 +127,14 @@ extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count,
                                 size_t *offset, size_t *len);
 extern void scsi_kunmap_atomic_sg(void *virt);
 
-extern struct scatterlist *scsi_alloc_sgtable(struct scsi_cmnd *, gfp_t);
-extern void scsi_free_sgtable(struct scatterlist *, int);
+extern int scsi_alloc_sgtable(struct scsi_cmnd *, gfp_t);
+extern void scsi_free_sgtable(struct scsi_cmnd *);
 
 extern int scsi_dma_map(struct scsi_cmnd *cmd);
 extern void scsi_dma_unmap(struct scsi_cmnd *cmd);
 
 #define scsi_sg_count(cmd) ((cmd)->use_sg)
-#define scsi_sglist(cmd) ((struct scatterlist *)(cmd)->request_buffer)
+#define scsi_sglist(cmd) ((cmd)->sg_table.sgl)
 #define scsi_bufflen(cmd) ((cmd)->request_bufflen)
 
 static inline void scsi_set_resid(struct scsi_cmnd *cmd, int resid)
@@ -148,6 +148,6 @@ static inline int scsi_get_resid(struct scsi_cmnd *cmd)
 }
 
 #define scsi_for_each_sg(cmd, sg, nseg, __i)                   \
-       for (__i = 0, sg = scsi_sglist(cmd); __i < (nseg); __i++, (sg)++)
+       for_each_sg(scsi_sglist(cmd), sg, nseg, __i)
 
 #endif /* _SCSI_SCSI_CMND_H */