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-rw-r--r--ANDROID_3.4.5/block/blk-exec.c121
1 files changed, 0 insertions, 121 deletions
diff --git a/ANDROID_3.4.5/block/blk-exec.c b/ANDROID_3.4.5/block/blk-exec.c
deleted file mode 100644
index fb2cbd55..00000000
--- a/ANDROID_3.4.5/block/blk-exec.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * Functions related to setting various queue properties from drivers
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/bio.h>
-#include <linux/blkdev.h>
-
-#include "blk.h"
-
-/*
- * for max sense size
- */
-#include <scsi/scsi_cmnd.h>
-
-/**
- * blk_end_sync_rq - executes a completion event on a request
- * @rq: request to complete
- * @error: end I/O status of the request
- */
-static void blk_end_sync_rq(struct request *rq, int error)
-{
- struct completion *waiting = rq->end_io_data;
-
- rq->end_io_data = NULL;
- __blk_put_request(rq->q, rq);
-
- /*
- * complete last, if this is a stack request the process (and thus
- * the rq pointer) could be invalid right after this complete()
- */
- complete(waiting);
-}
-
-/**
- * blk_execute_rq_nowait - insert a request into queue for execution
- * @q: queue to insert the request in
- * @bd_disk: matching gendisk
- * @rq: request to insert
- * @at_head: insert request at head or tail of queue
- * @done: I/O completion handler
- *
- * Description:
- * Insert a fully prepared request at the back of the I/O scheduler queue
- * for execution. Don't wait for completion.
- */
-void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
- struct request *rq, int at_head,
- rq_end_io_fn *done)
-{
- int where = at_head ? ELEVATOR_INSERT_FRONT : ELEVATOR_INSERT_BACK;
-
- WARN_ON(irqs_disabled());
- spin_lock_irq(q->queue_lock);
-
- if (unlikely(blk_queue_dead(q))) {
- spin_unlock_irq(q->queue_lock);
- rq->errors = -ENXIO;
- if (rq->end_io)
- rq->end_io(rq, rq->errors);
- return;
- }
-
- rq->rq_disk = bd_disk;
- rq->end_io = done;
- __elv_add_request(q, rq, where);
- __blk_run_queue(q);
- /* the queue is stopped so it won't be run */
- if (rq->cmd_type == REQ_TYPE_PM_RESUME)
- q->request_fn(q);
- spin_unlock_irq(q->queue_lock);
-}
-EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);
-
-/**
- * blk_execute_rq - insert a request into queue for execution
- * @q: queue to insert the request in
- * @bd_disk: matching gendisk
- * @rq: request to insert
- * @at_head: insert request at head or tail of queue
- *
- * Description:
- * Insert a fully prepared request at the back of the I/O scheduler queue
- * for execution and wait for completion.
- */
-int blk_execute_rq(struct request_queue *q, struct gendisk *bd_disk,
- struct request *rq, int at_head)
-{
- DECLARE_COMPLETION_ONSTACK(wait);
- char sense[SCSI_SENSE_BUFFERSIZE];
- int err = 0;
- unsigned long hang_check;
-
- /*
- * we need an extra reference to the request, so we can look at
- * it after io completion
- */
- rq->ref_count++;
-
- if (!rq->sense) {
- memset(sense, 0, sizeof(sense));
- rq->sense = sense;
- rq->sense_len = 0;
- }
-
- rq->end_io_data = &wait;
- blk_execute_rq_nowait(q, bd_disk, rq, at_head, blk_end_sync_rq);
-
- /* Prevent hang_check timer from firing at us during very long I/O */
- hang_check = sysctl_hung_task_timeout_secs;
- if (hang_check)
- while (!wait_for_completion_timeout(&wait, hang_check * (HZ/2)));
- else
- wait_for_completion(&wait);
-
- if (rq->errors)
- err = -EIO;
-
- return err;
-}
-EXPORT_SYMBOL(blk_execute_rq);