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Commit e1da0222 authored by Jens Axboe's avatar Jens Axboe
Browse files

afs: add bdi backing to mount session. 



This ensures that dirty data gets flushed properly.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 0ed07ddb

fs/afs/internal.h

+2 −0
Original line number Original line Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <linux/workqueue.h>

#include <linux/workqueue.h>

#include <linux/sched.h>

#include <linux/sched.h>

#include <linux/fscache.h>

#include <linux/fscache.h>

#include <linux/backing-dev.h>





#include "afs.h"

#include "afs.h"

#include "afs_vl.h"

#include "afs_vl.h"
@@ -313,6 +314,7 @@ struct afs_volume { 
	unsigned short		rjservers;	/* number of servers discarded due to -ENOMEDIUM */

	unsigned short		rjservers;	/* number of servers discarded due to -ENOMEDIUM */

	struct afs_server	*servers[8];	/* servers on which volume resides (ordered) */

	struct afs_server	*servers[8];	/* servers on which volume resides (ordered) */

	struct rw_semaphore	server_sem;	/* lock for accessing current server */

	struct rw_semaphore	server_sem;	/* lock for accessing current server */

	struct backing_dev_info	bdi;

};

};





/*

/*

fs/afs/super.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -311,6 +311,7 @@ static int afs_fill_super(struct super_block *sb, void *data) 
	sb->s_magic		= AFS_FS_MAGIC;

	sb->s_magic		= AFS_FS_MAGIC;

	sb->s_op		= &afs_super_ops;

	sb->s_op		= &afs_super_ops;

	sb->s_fs_info		= as;

	sb->s_fs_info		= as;

	sb->s_bdi		= &as->volume->bdi;





	/* allocate the root inode and dentry */

	/* allocate the root inode and dentry */

	fid.vid		= as->volume->vid;

	fid.vid		= as->volume->vid;

fs/afs/volume.c

+7 −0
Original line number Original line Diff line number Diff line
@@ -106,6 +106,10 @@ struct afs_volume *afs_volume_lookup(struct afs_mount_params *params) 
	volume->cell		= params->cell;

	volume->cell		= params->cell;

	volume->vid		= vlocation->vldb.vid[params->type];

	volume->vid		= vlocation->vldb.vid[params->type];





	ret = bdi_setup_and_register(&volume->bdi, "afs", BDI_CAP_MAP_COPY);

	if (ret)

		goto error_bdi;



	init_rwsem(&volume->server_sem);

	init_rwsem(&volume->server_sem);





	/* look up all the applicable server records */

	/* look up all the applicable server records */
@@ -151,6 +155,8 @@ struct afs_volume *afs_volume_lookup(struct afs_mount_params *params) 
	return ERR_PTR(ret);

	return ERR_PTR(ret);





error_discard:

error_discard:

	bdi_destroy(&volume->bdi);

error_bdi:

	up_write(&params->cell->vl_sem);

	up_write(&params->cell->vl_sem);





	for (loop = volume->nservers - 1; loop >= 0; loop--)

	for (loop = volume->nservers - 1; loop >= 0; loop--)
@@ -200,6 +206,7 @@ void afs_put_volume(struct afs_volume *volume) 
	for (loop = volume->nservers - 1; loop >= 0; loop--)

	for (loop = volume->nservers - 1; loop >= 0; loop--)

		afs_put_server(volume->servers[loop]);

		afs_put_server(volume->servers[loop]);





	bdi_destroy(&volume->bdi);

	kfree(volume);

	kfree(volume);





	_leave(" [destroyed]");

	_leave(" [destroyed]");