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Commit f11b00f3 authored by Adrian Bunk's avatar Adrian Bunk Committed by Linus Torvalds
Browse files

fs/fs-writeback.c: make 2 functions static 



Make the following needlessly global functions static:

- writeback_acquire()
- writeback_release()

Signed-off-by: default avatarAdrian Bunk <bunk@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 67cde595

fs/fs-writeback.c

+39 −39
Original line number Diff line number Diff line
@@ -25,6 +25,45 @@ 
#include <linux/buffer_head.h>

#include "internal.h"





/**

 * writeback_acquire - attempt to get exclusive writeback access to a device

 * @bdi: the device's backing_dev_info structure

 *

 * It is a waste of resources to have more than one pdflush thread blocked on

 * a single request queue.  Exclusion at the request_queue level is obtained

 * via a flag in the request_queue's backing_dev_info.state.

 *

 * Non-request_queue-backed address_spaces will share default_backing_dev_info,

 * unless they implement their own.  Which is somewhat inefficient, as this

 * may prevent concurrent writeback against multiple devices.

 */

static int writeback_acquire(struct backing_dev_info *bdi)

{

	return !test_and_set_bit(BDI_pdflush, &bdi->state);

}



/**

 * writeback_in_progress - determine whether there is writeback in progress

 * @bdi: the device's backing_dev_info structure.

 *

 * Determine whether there is writeback in progress against a backing device.

 */

int writeback_in_progress(struct backing_dev_info *bdi)

{

	return test_bit(BDI_pdflush, &bdi->state);

}



/**

 * writeback_release - relinquish exclusive writeback access against a device.

 * @bdi: the device's backing_dev_info structure

 */

static void writeback_release(struct backing_dev_info *bdi)

{

	BUG_ON(!writeback_in_progress(bdi));

	clear_bit(BDI_pdflush, &bdi->state);

}



/**

 *	__mark_inode_dirty -	internal function

 *	@inode: inode to mark
@@ -747,43 +786,4 @@ int generic_osync_inode(struct inode *inode, struct address_space *mapping, int 


	return err;

}



EXPORT_SYMBOL(generic_osync_inode);
 


/**

 * writeback_acquire - attempt to get exclusive writeback access to a device

 * @bdi: the device's backing_dev_info structure

 *

 * It is a waste of resources to have more than one pdflush thread blocked on

 * a single request queue.  Exclusion at the request_queue level is obtained

 * via a flag in the request_queue's backing_dev_info.state.

 *

 * Non-request_queue-backed address_spaces will share default_backing_dev_info,

 * unless they implement their own.  Which is somewhat inefficient, as this

 * may prevent concurrent writeback against multiple devices.

 */

int writeback_acquire(struct backing_dev_info *bdi)

{

	return !test_and_set_bit(BDI_pdflush, &bdi->state);

}



/**

 * writeback_in_progress - determine whether there is writeback in progress

 * @bdi: the device's backing_dev_info structure.

 *

 * Determine whether there is writeback in progress against a backing device.

 */

int writeback_in_progress(struct backing_dev_info *bdi)

{

	return test_bit(BDI_pdflush, &bdi->state);

}



/**

 * writeback_release - relinquish exclusive writeback access against a device.

 * @bdi: the device's backing_dev_info structure

 */

void writeback_release(struct backing_dev_info *bdi)

{

	BUG_ON(!writeback_in_progress(bdi));

	clear_bit(BDI_pdflush, &bdi->state);

}

include/linux/backing-dev.h

+0 −2
Original line number Diff line number Diff line
@@ -156,9 +156,7 @@ static inline unsigned long bdi_stat_error(struct backing_dev_info *bdi) 
extern struct backing_dev_info default_backing_dev_info;

void default_unplug_io_fn(struct backing_dev_info *bdi, struct page *page);



int writeback_acquire(struct backing_dev_info *bdi);

int writeback_in_progress(struct backing_dev_info *bdi);

void writeback_release(struct backing_dev_info *bdi);



static inline int bdi_congested(struct backing_dev_info *bdi, int bdi_bits)

{