blk-flush.c File Reference

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/bio.h>
#include <linux/blkdev.h>
#include <linux/gfp.h>
#include "blk.h"

Go to the source code of this file.

Enumerations
enum	{   REQ_FSEQ_PREFLUSH = (1 << 0), REQ_FSEQ_DATA = (1 << 1), REQ_FSEQ_POSTFLUSH = (1 << 2), REQ_FSEQ_DONE = (1 << 3),   REQ_FSEQ_ACTIONS, FLUSH_PENDING_TIMEOUT = 5 * HZ }

Functions
void	blk_insert_flush (struct request *rq)
void	blk_abort_flushes (struct request_queue *q)
int	blkdev_issue_flush (struct block_device *bdev, gfp_t gfp_mask, sector_t *error_sector)
	EXPORT_SYMBOL (blkdev_issue_flush)

Enumeration Type Documentation

anonymous enum

Enumerator:

REQ_FSEQ_PREFLUSH
REQ_FSEQ_DATA
REQ_FSEQ_POSTFLUSH
REQ_FSEQ_DONE
REQ_FSEQ_ACTIONS
FLUSH_PENDING_TIMEOUT

Definition at line 76 of file blk-flush.c.

Function Documentation

void blk_abort_flushes

(

struct request_queue *

q

)

blk_abort_flushes - is being aborted, abort flush requests : request_queue being aborted

To be called from elv_abort_queue(). is being aborted. Prepare all FLUSH/FUA requests for abortion.

CONTEXT: spin_lock_irq(q->queue_lock)

Definition at line 359 of file blk-flush.c.

void blk_insert_flush

(

struct request *

rq

)

blk_insert_flush - insert a new FLUSH/FUA request : request to insert

To be called from __elv_add_request() for ELEVATOR_INSERT_FLUSH insertions. is being submitted. Analyze what needs to be done and put it on the right queue.

CONTEXT: spin_lock_irq(q->queue_lock)

Definition at line 298 of file blk-flush.c.

int blkdev_issue_flush	(	struct block_device *	bdev,
		gfp_t	gfp_mask,
		sector_t *	error_sector
	)

blkdev_issue_flush - queue a flush : blockdev to issue flush for : memory allocation flags (for bio_alloc) : error sector

Description: Issue a flush for the block device in question. Caller can supply room for storing the error offset in case of a flush error, if they wish to. If WAIT flag is not passed then caller may check only what request was pushed in some internal queue for later handling.

Definition at line 408 of file blk-flush.c.

EXPORT_SYMBOL

(

blkdev_issue_flush

)