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Date: Sat, 1 Mar 2008 09:58:25 +0100
From: Borislav Petkov <petkovbb@...glemail.com>
To: <bzolnier@...il.com>
Cc: linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
Borislav Petkov <petkovbb@...il.com>
Subject: [PATCH 01/24] ide-tape: remove idetape_pipeline_active()
This function was simply a wrapper for a test_bit() macro so remove it and
use the macro instead.
Signed-off-by: Borislav Petkov <petkovbb@...il.com>
---
drivers/ide/ide-tape.c | 29 +++++++++++------------------
1 files changed, 11 insertions(+), 18 deletions(-)
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 3f9fbd8..792c76e 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -1605,14 +1605,6 @@ out:
}
/* Pipeline related functions */
-static inline int idetape_pipeline_active(idetape_tape_t *tape)
-{
- int rc1, rc2;
-
- rc1 = test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags);
- rc2 = (tape->active_data_rq != NULL);
- return rc1;
-}
/*
* The function below uses __get_free_page to allocate a pipeline stage, along
@@ -2058,7 +2050,7 @@ static int __idetape_discard_read_pipeline(ide_drive_t *drive)
spin_lock_irqsave(&tape->lock, flags);
tape->next_stage = NULL;
- if (idetape_pipeline_active(tape))
+ if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags))
idetape_wait_for_request(drive, tape->active_data_rq);
spin_unlock_irqrestore(&tape->lock, flags);
@@ -2131,7 +2123,7 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks,
debug_log(DBG_SENSE, "%s: cmd=%d\n", __func__, cmd);
- if (idetape_pipeline_active(tape)) {
+ if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
printk(KERN_ERR "ide-tape: bug: the pipeline is active in %s\n",
__func__);
return (0);
@@ -2162,8 +2154,7 @@ static void idetape_plug_pipeline(ide_drive_t *drive)
if (tape->next_stage == NULL)
return;
- if (!idetape_pipeline_active(tape)) {
- set_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags);
+ if (!test_and_set_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
idetape_activate_next_stage(drive);
(void) ide_do_drive_cmd(drive, tape->active_data_rq, ide_end);
}
@@ -2242,13 +2233,14 @@ static int idetape_add_chrdev_write_request(ide_drive_t *drive, int blocks)
/* Attempt to allocate a new stage. Beware possible race conditions. */
while ((new_stage = idetape_kmalloc_stage(tape)) == NULL) {
spin_lock_irqsave(&tape->lock, flags);
- if (idetape_pipeline_active(tape)) {
+ if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
idetape_wait_for_request(drive, tape->active_data_rq);
spin_unlock_irqrestore(&tape->lock, flags);
} else {
spin_unlock_irqrestore(&tape->lock, flags);
idetape_plug_pipeline(drive);
- if (idetape_pipeline_active(tape))
+ if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE,
+ &tape->flags))
continue;
/*
* The machine is short on memory. Fallback to non-
@@ -2277,7 +2269,7 @@ static int idetape_add_chrdev_write_request(ide_drive_t *drive, int blocks)
* starting to service requests, so that we will be able to keep up with
* the higher speeds of the tape.
*/
- if (!idetape_pipeline_active(tape)) {
+ if (!test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
if (tape->nr_stages >= tape->max_stages * 9 / 10 ||
tape->nr_stages >= tape->max_stages -
tape->uncontrolled_pipeline_head_speed * 3 * 1024 /
@@ -2304,10 +2296,11 @@ static void idetape_wait_for_pipeline(ide_drive_t *drive)
idetape_tape_t *tape = drive->driver_data;
unsigned long flags;
- while (tape->next_stage || idetape_pipeline_active(tape)) {
+ while (tape->next_stage || test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE,
+ &tape->flags)) {
idetape_plug_pipeline(drive);
spin_lock_irqsave(&tape->lock, flags);
- if (idetape_pipeline_active(tape))
+ if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags))
idetape_wait_for_request(drive, tape->active_data_rq);
spin_unlock_irqrestore(&tape->lock, flags);
}
@@ -2464,7 +2457,7 @@ static int idetape_init_read(ide_drive_t *drive, int max_stages)
new_stage = idetape_kmalloc_stage(tape);
}
}
- if (!idetape_pipeline_active(tape)) {
+ if (!test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
if (tape->nr_pending_stages >= 3 * max_stages / 4) {
tape->measure_insert_time = 1;
tape->insert_time = jiffies;
--
1.5.4.1
--
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