diff --git a/scst/kernel/scst_exec_req_fifo-2.6.26.patch b/scst/kernel/scst_exec_req_fifo-2.6.26.patch
new file mode 100644
index 000000000..882cf7898
--- /dev/null
+++ b/scst/kernel/scst_exec_req_fifo-2.6.26.patch
@@ -0,0 +1,112 @@
+diff -upr linux-2.6.26/drivers/scsi/scsi_lib.c linux-2.6.26/drivers/scsi/scsi_lib.c
+--- linux-2.6.26/drivers/scsi/scsi_lib.c	2008-07-14 01:51:29.000000000 +0400
++++ linux-2.6.26/drivers/scsi/scsi_lib.c	2008-07-31 21:20:00.000000000 +0400
+@@ -372,7 +372,7 @@ free_bios:
+ }
+ 
+ /**
+- * scsi_execute_async - insert request
++ * __scsi_execute_async - insert request
+  * @sdev:	scsi device
+  * @cmd:	scsi command
+  * @cmd_len:	length of scsi cdb
+@@ -385,11 +385,14 @@ free_bios:
+  * @privdata:	data passed to done()
+  * @done:	callback function when done
+  * @gfp:	memory allocation flags
++ * @at_head:	insert request at head or tail of queue
+  */
+-int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
++static inline int __scsi_execute_async(struct scsi_device *sdev,
++		       const unsigned char *cmd,
+ 		       int cmd_len, int data_direction, void *buffer, unsigned bufflen,
+ 		       int use_sg, int timeout, int retries, void *privdata,
+-		       void (*done)(void *, char *, int, int), gfp_t gfp)
++		       void (*done)(void *, char *, int, int), gfp_t gfp,
++		       int at_head)
+ {
+ 	struct request *req;
+ 	struct scsi_io_context *sioc;
+@@ -426,7 +429,7 @@ int scsi_execute_async(struct scsi_devic
+ 	sioc->data = privdata;
+ 	sioc->done = done;
+ 
+-	blk_execute_rq_nowait(req->q, NULL, req, 1, scsi_end_async);
++	blk_execute_rq_nowait(req->q, NULL, req, at_head, scsi_end_async);
+ 	return 0;
+ 
+ free_req:
+@@ -435,8 +438,55 @@ free_sense:
+ 	kmem_cache_free(scsi_io_context_cache, sioc);
+ 	return DRIVER_ERROR << 24;
+ }
++
++/**
++ * scsi_execute_async - insert request
++ * @sdev:	scsi device
++ * @cmd:	scsi command
++ * @cmd_len:	length of scsi cdb
++ * @data_direction: data direction
++ * @buffer:	data buffer (this can be a kernel buffer or scatterlist)
++ * @bufflen:	len of buffer
++ * @use_sg:	if buffer is a scatterlist this is the number of elements
++ * @timeout:	request timeout in seconds
++ * @retries:	number of times to retry request
++ * @flags:	or into request flags
++ **/
++int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
++		       int cmd_len, int data_direction, void *buffer,
++		       unsigned bufflen, int use_sg, int timeout,
++		       int retries, void *privdata,
++		       void (*done)(void *, char *, int, int), gfp_t gfp)
++{
++	return __scsi_execute_async(sdev, cmd, cmd_len, data_direction, buffer,
++		bufflen, use_sg, timeout, retries, privdata, done, gfp, 1);
++}
+ EXPORT_SYMBOL_GPL(scsi_execute_async);
+ 
++/**
++ * scsi_execute_async_fifo - insert request at tail, in FIFO order
++ * @sdev:	scsi device
++ * @cmd:	scsi command
++ * @cmd_len:	length of scsi cdb
++ * @data_direction: data direction
++ * @buffer:	data buffer (this can be a kernel buffer or scatterlist)
++ * @bufflen:	len of buffer
++ * @use_sg:	if buffer is a scatterlist this is the number of elements
++ * @timeout:	request timeout in seconds
++ * @retries:	number of times to retry request
++ * @flags:	or into request flags
++ **/
++int scsi_execute_async_fifo(struct scsi_device *sdev, const unsigned char *cmd,
++		       int cmd_len, int data_direction, void *buffer,
++		       unsigned bufflen, int use_sg, int timeout, int retries,
++		       void *privdata,
++		       void (*done)(void *, char *, int, int), gfp_t gfp)
++{
++	return __scsi_execute_async(sdev, cmd, cmd_len, data_direction, buffer,
++		bufflen, use_sg, timeout, retries, privdata, done, gfp, 0);
++}
++EXPORT_SYMBOL_GPL(scsi_execute_async_fifo);
++
+ /*
+  * Function:    scsi_init_cmd_errh()
+  *
+diff -upr linux-2.6.26/include/scsi/scsi_device.h linux-2.6.26/include/scsi/scsi_device.h
+--- linux-2.6.26/include/scsi/scsi_device.h	2008-07-14 01:51:29.000000000 +0400
++++ linux-2.6.26/include/scsi/scsi_device.h	2008-07-31 21:20:39.000000000 +0400
+@@ -333,6 +333,14 @@ extern int scsi_execute_async(struct scs
+ 			      int timeout, int retries, void *privdata,
+ 			      void (*done)(void *, char *, int, int),
+ 			      gfp_t gfp);
++#define SCSI_EXEC_REQ_FIFO_DEFINED
++extern int scsi_execute_async_fifo(struct scsi_device *sdev,
++			      const unsigned char *cmd, int cmd_len,
++			      int data_direction, void *buffer,
++			      unsigned bufflen, int use_sg,
++			      int timeout, int retries, void *privdata,
++			      void (*done)(void *, char *, int, int),
++			      gfp_t gfp);
+ 
+ static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev)
+ {
diff --git a/scst/kernel/scst_exec_req_fifo-2.6.27.patch b/scst/kernel/scst_exec_req_fifo-2.6.27.patch
new file mode 100644
index 000000000..828121b15
--- /dev/null
+++ b/scst/kernel/scst_exec_req_fifo-2.6.27.patch
@@ -0,0 +1,112 @@
+diff -upr linux-2.6.27/drivers/scsi/scsi_lib.c linux-2.6.27/drivers/scsi/scsi_lib.c
+--- linux-2.6.27/drivers/scsi/scsi_lib.c	2008-07-14 01:51:29.000000000 +0400
++++ linux-2.6.27/drivers/scsi/scsi_lib.c	2008-07-31 21:20:00.000000000 +0400
+@@ -372,7 +372,7 @@ free_bios:
+ }
+ 
+ /**
+- * scsi_execute_async - insert request
++ * __scsi_execute_async - insert request
+  * @sdev:	scsi device
+  * @cmd:	scsi command
+  * @cmd_len:	length of scsi cdb
+@@ -385,11 +385,14 @@ free_bios:
+  * @privdata:	data passed to done()
+  * @done:	callback function when done
+  * @gfp:	memory allocation flags
++ * @at_head:	insert request at head or tail of queue
+  */
+-int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
++static inline int __scsi_execute_async(struct scsi_device *sdev,
++		       const unsigned char *cmd,
+ 		       int cmd_len, int data_direction, void *buffer, unsigned bufflen,
+ 		       int use_sg, int timeout, int retries, void *privdata,
+-		       void (*done)(void *, char *, int, int), gfp_t gfp)
++		       void (*done)(void *, char *, int, int), gfp_t gfp,
++		       int at_head)
+ {
+ 	struct request *req;
+ 	struct scsi_io_context *sioc;
+@@ -426,7 +429,7 @@ int scsi_execute_async(struct scsi_devic
+ 	sioc->data = privdata;
+ 	sioc->done = done;
+ 
+-	blk_execute_rq_nowait(req->q, NULL, req, 1, scsi_end_async);
++	blk_execute_rq_nowait(req->q, NULL, req, at_head, scsi_end_async);
+ 	return 0;
+ 
+ free_req:
+@@ -435,8 +438,55 @@ free_sense:
+ 	kmem_cache_free(scsi_io_context_cache, sioc);
+ 	return DRIVER_ERROR << 24;
+ }
++
++/**
++ * scsi_execute_async - insert request
++ * @sdev:	scsi device
++ * @cmd:	scsi command
++ * @cmd_len:	length of scsi cdb
++ * @data_direction: data direction
++ * @buffer:	data buffer (this can be a kernel buffer or scatterlist)
++ * @bufflen:	len of buffer
++ * @use_sg:	if buffer is a scatterlist this is the number of elements
++ * @timeout:	request timeout in seconds
++ * @retries:	number of times to retry request
++ * @flags:	or into request flags
++ **/
++int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
++		       int cmd_len, int data_direction, void *buffer,
++		       unsigned bufflen, int use_sg, int timeout,
++		       int retries, void *privdata,
++		       void (*done)(void *, char *, int, int), gfp_t gfp)
++{
++	return __scsi_execute_async(sdev, cmd, cmd_len, data_direction, buffer,
++		bufflen, use_sg, timeout, retries, privdata, done, gfp, 1);
++}
+ EXPORT_SYMBOL_GPL(scsi_execute_async);
+ 
++/**
++ * scsi_execute_async_fifo - insert request at tail, in FIFO order
++ * @sdev:	scsi device
++ * @cmd:	scsi command
++ * @cmd_len:	length of scsi cdb
++ * @data_direction: data direction
++ * @buffer:	data buffer (this can be a kernel buffer or scatterlist)
++ * @bufflen:	len of buffer
++ * @use_sg:	if buffer is a scatterlist this is the number of elements
++ * @timeout:	request timeout in seconds
++ * @retries:	number of times to retry request
++ * @flags:	or into request flags
++ **/
++int scsi_execute_async_fifo(struct scsi_device *sdev, const unsigned char *cmd,
++		       int cmd_len, int data_direction, void *buffer,
++		       unsigned bufflen, int use_sg, int timeout, int retries,
++		       void *privdata,
++		       void (*done)(void *, char *, int, int), gfp_t gfp)
++{
++	return __scsi_execute_async(sdev, cmd, cmd_len, data_direction, buffer,
++		bufflen, use_sg, timeout, retries, privdata, done, gfp, 0);
++}
++EXPORT_SYMBOL_GPL(scsi_execute_async_fifo);
++
+ /*
+  * Function:    scsi_init_cmd_errh()
+  *
+diff -upr linux-2.6.27/include/scsi/scsi_device.h linux-2.6.27/include/scsi/scsi_device.h
+--- linux-2.6.27/include/scsi/scsi_device.h	2008-07-14 01:51:29.000000000 +0400
++++ linux-2.6.27/include/scsi/scsi_device.h	2008-07-31 21:20:39.000000000 +0400
+@@ -365,6 +365,14 @@ extern int scsi_execute_async(struct scs
+ 			      int timeout, int retries, void *privdata,
+ 			      void (*done)(void *, char *, int, int),
+ 			      gfp_t gfp);
++#define SCSI_EXEC_REQ_FIFO_DEFINED
++extern int scsi_execute_async_fifo(struct scsi_device *sdev,
++			      const unsigned char *cmd, int cmd_len,
++			      int data_direction, void *buffer,
++			      unsigned bufflen, int use_sg,
++			      int timeout, int retries, void *privdata,
++			      void (*done)(void *, char *, int, int),
++			      gfp_t gfp);
+ 
+ static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev)
+ {
diff --git a/scst/kernel/scst_exec_req_fifo-2.6.28.patch b/scst/kernel/scst_exec_req_fifo-2.6.28.patch
new file mode 100644
index 000000000..076999962
--- /dev/null
+++ b/scst/kernel/scst_exec_req_fifo-2.6.28.patch
@@ -0,0 +1,112 @@
+diff -upr linux-2.6.28/drivers/scsi/scsi_lib.c linux-2.6.28/drivers/scsi/scsi_lib.c
+--- linux-2.6.28/drivers/scsi/scsi_lib.c	2008-07-14 01:51:29.000000000 +0400
++++ linux-2.6.28/drivers/scsi/scsi_lib.c	2008-07-31 21:20:00.000000000 +0400
+@@ -380,7 +380,7 @@ free_bios:
+ }
+ 
+ /**
+- * scsi_execute_async - insert request
++ * __scsi_execute_async - insert request
+  * @sdev:	scsi device
+  * @cmd:	scsi command
+  * @cmd_len:	length of scsi cdb
+@@ -393,11 +393,14 @@ free_bios:
+  * @privdata:	data passed to done()
+  * @done:	callback function when done
+  * @gfp:	memory allocation flags
++ * @at_head:	insert request at head or tail of queue
+  */
+-int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
++static inline int __scsi_execute_async(struct scsi_device *sdev,
++		       const unsigned char *cmd,
+ 		       int cmd_len, int data_direction, void *buffer, unsigned bufflen,
+ 		       int use_sg, int timeout, int retries, void *privdata,
+-		       void (*done)(void *, char *, int, int), gfp_t gfp)
++		       void (*done)(void *, char *, int, int), gfp_t gfp,
++		       int at_head)
+ {
+ 	struct request *req;
+ 	struct scsi_io_context *sioc;
+@@ -434,7 +439,7 @@ int scsi_execute_async(struct scsi_devic
+ 	sioc->data = privdata;
+ 	sioc->done = done;
+ 
+-	blk_execute_rq_nowait(req->q, NULL, req, 1, scsi_end_async);
++	blk_execute_rq_nowait(req->q, NULL, req, at_head, scsi_end_async);
+ 	return 0;
+ 
+ free_req:
+@@ -443,8 +446,55 @@ free_sense:
+ 	kmem_cache_free(scsi_io_context_cache, sioc);
+ 	return DRIVER_ERROR << 24;
+ }
++
++/**
++ * scsi_execute_async - insert request
++ * @sdev:	scsi device
++ * @cmd:	scsi command
++ * @cmd_len:	length of scsi cdb
++ * @data_direction: data direction
++ * @buffer:	data buffer (this can be a kernel buffer or scatterlist)
++ * @bufflen:	len of buffer
++ * @use_sg:	if buffer is a scatterlist this is the number of elements
++ * @timeout:	request timeout in seconds
++ * @retries:	number of times to retry request
++ * @flags:	or into request flags
++ **/
++int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
++		       int cmd_len, int data_direction, void *buffer,
++		       unsigned bufflen, int use_sg, int timeout,
++		       int retries, void *privdata,
++		       void (*done)(void *, char *, int, int), gfp_t gfp)
++{
++	return __scsi_execute_async(sdev, cmd, cmd_len, data_direction, buffer,
++		bufflen, use_sg, timeout, retries, privdata, done, gfp, 1);
++}
+ EXPORT_SYMBOL_GPL(scsi_execute_async);
+ 
++/**
++ * scsi_execute_async_fifo - insert request at tail, in FIFO order
++ * @sdev:	scsi device
++ * @cmd:	scsi command
++ * @cmd_len:	length of scsi cdb
++ * @data_direction: data direction
++ * @buffer:	data buffer (this can be a kernel buffer or scatterlist)
++ * @bufflen:	len of buffer
++ * @use_sg:	if buffer is a scatterlist this is the number of elements
++ * @timeout:	request timeout in seconds
++ * @retries:	number of times to retry request
++ * @flags:	or into request flags
++ **/
++int scsi_execute_async_fifo(struct scsi_device *sdev, const unsigned char *cmd,
++		       int cmd_len, int data_direction, void *buffer,
++		       unsigned bufflen, int use_sg, int timeout, int retries,
++		       void *privdata,
++		       void (*done)(void *, char *, int, int), gfp_t gfp)
++{
++	return __scsi_execute_async(sdev, cmd, cmd_len, data_direction, buffer,
++		bufflen, use_sg, timeout, retries, privdata, done, gfp, 0);
++}
++EXPORT_SYMBOL_GPL(scsi_execute_async_fifo);
++
+ /*
+  * Function:    scsi_init_cmd_errh()
+  *
+diff -upr linux-2.6.28/include/scsi/scsi_device.h linux-2.6.28/include/scsi/scsi_device.h
+--- linux-2.6.28/include/scsi/scsi_device.h	2008-07-14 01:51:29.000000000 +0400
++++ linux-2.6.28/include/scsi/scsi_device.h	2008-07-31 21:20:39.000000000 +0400
+@@ -377,6 +377,14 @@ extern int scsi_execute_async(struct scs
+ 			      int timeout, int retries, void *privdata,
+ 			      void (*done)(void *, char *, int, int),
+ 			      gfp_t gfp);
++#define SCSI_EXEC_REQ_FIFO_DEFINED
++extern int scsi_execute_async_fifo(struct scsi_device *sdev,
++			      const unsigned char *cmd, int cmd_len,
++			      int data_direction, void *buffer,
++			      unsigned bufflen, int use_sg,
++			      int timeout, int retries, void *privdata,
++			      void (*done)(void *, char *, int, int),
++			      gfp_t gfp);
+ 
+ static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev)
+ {
diff --git a/scst/kernel/scst_exec_req_fifo-2.6.29.patch b/scst/kernel/scst_exec_req_fifo-2.6.29.patch
new file mode 100644
index 000000000..ceb771e22
--- /dev/null
+++ b/scst/kernel/scst_exec_req_fifo-2.6.29.patch
@@ -0,0 +1,112 @@
+diff -upr linux-2.6.29/drivers/scsi/scsi_lib.c linux-2.6.29/drivers/scsi/scsi_lib.c
+--- linux-2.6.29/drivers/scsi/scsi_lib.c	2008-07-14 01:51:29.000000000 +0400
++++ linux-2.6.29/drivers/scsi/scsi_lib.c	2008-07-31 21:20:00.000000000 +0400
+@@ -402,7 +402,7 @@ free_bios:
+ }
+ 
+ /**
+- * scsi_execute_async - insert request
++ * __scsi_execute_async - insert request
+  * @sdev:	scsi device
+  * @cmd:	scsi command
+  * @cmd_len:	length of scsi cdb
+@@ -415,11 +415,14 @@ free_bios:
+  * @privdata:	data passed to done()
+  * @done:	callback function when done
+  * @gfp:	memory allocation flags
++ * @at_head:	insert request at head or tail of queue
+  */
+-int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
++static inline int __scsi_execute_async(struct scsi_device *sdev,
++		       const unsigned char *cmd,
+ 		       int cmd_len, int data_direction, void *buffer, unsigned bufflen,
+ 		       int use_sg, int timeout, int retries, void *privdata,
+-		       void (*done)(void *, char *, int, int), gfp_t gfp)
++		       void (*done)(void *, char *, int, int), gfp_t gfp,
++		       int at_head)
+ {
+ 	struct request *req;
+ 	struct scsi_io_context *sioc;
+@@ -456,7 +461,7 @@ int scsi_execute_async(struct scsi_devic
+ 	sioc->data = privdata;
+ 	sioc->done = done;
+ 
+-	blk_execute_rq_nowait(req->q, NULL, req, 1, scsi_end_async);
++	blk_execute_rq_nowait(req->q, NULL, req, at_head, scsi_end_async);
+ 	return 0;
+ 
+ free_req:
+@@ -465,8 +468,55 @@ free_sense:
+ 	kmem_cache_free(scsi_io_context_cache, sioc);
+ 	return DRIVER_ERROR << 24;
+ }
++
++/**
++ * scsi_execute_async - insert request
++ * @sdev:	scsi device
++ * @cmd:	scsi command
++ * @cmd_len:	length of scsi cdb
++ * @data_direction: data direction
++ * @buffer:	data buffer (this can be a kernel buffer or scatterlist)
++ * @bufflen:	len of buffer
++ * @use_sg:	if buffer is a scatterlist this is the number of elements
++ * @timeout:	request timeout in seconds
++ * @retries:	number of times to retry request
++ * @flags:	or into request flags
++ **/
++int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
++		       int cmd_len, int data_direction, void *buffer,
++		       unsigned bufflen, int use_sg, int timeout,
++		       int retries, void *privdata,
++		       void (*done)(void *, char *, int, int), gfp_t gfp)
++{
++	return __scsi_execute_async(sdev, cmd, cmd_len, data_direction, buffer,
++		bufflen, use_sg, timeout, retries, privdata, done, gfp, 1);
++}
+ EXPORT_SYMBOL_GPL(scsi_execute_async);
+ 
++/**
++ * scsi_execute_async_fifo - insert request at tail, in FIFO order
++ * @sdev:	scsi device
++ * @cmd:	scsi command
++ * @cmd_len:	length of scsi cdb
++ * @data_direction: data direction
++ * @buffer:	data buffer (this can be a kernel buffer or scatterlist)
++ * @bufflen:	len of buffer
++ * @use_sg:	if buffer is a scatterlist this is the number of elements
++ * @timeout:	request timeout in seconds
++ * @retries:	number of times to retry request
++ * @flags:	or into request flags
++ **/
++int scsi_execute_async_fifo(struct scsi_device *sdev, const unsigned char *cmd,
++		       int cmd_len, int data_direction, void *buffer,
++		       unsigned bufflen, int use_sg, int timeout, int retries,
++		       void *privdata,
++		       void (*done)(void *, char *, int, int), gfp_t gfp)
++{
++	return __scsi_execute_async(sdev, cmd, cmd_len, data_direction, buffer,
++		bufflen, use_sg, timeout, retries, privdata, done, gfp, 0);
++}
++EXPORT_SYMBOL_GPL(scsi_execute_async_fifo);
++
+ /*
+  * Function:    scsi_init_cmd_errh()
+  *
+diff -upr linux-2.6.29/include/scsi/scsi_device.h linux-2.6.29/include/scsi/scsi_device.h
+--- linux-2.6.29/include/scsi/scsi_device.h	2008-07-14 01:51:29.000000000 +0400
++++ linux-2.6.29/include/scsi/scsi_device.h	2008-07-31 21:20:39.000000000 +0400
+@@ -376,6 +376,14 @@ extern int scsi_execute_async(struct scs
+ 			      int timeout, int retries, void *privdata,
+ 			      void (*done)(void *, char *, int, int),
+ 			      gfp_t gfp);
++#define SCSI_EXEC_REQ_FIFO_DEFINED
++extern int scsi_execute_async_fifo(struct scsi_device *sdev,
++			      const unsigned char *cmd, int cmd_len,
++			      int data_direction, void *buffer,
++			      unsigned bufflen, int use_sg,
++			      int timeout, int retries, void *privdata,
++			      void (*done)(void *, char *, int, int),
++			      gfp_t gfp);
+ 
+ static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev)
+ {