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coda: add bdi backing to mount session 

This ensures that dirty data gets flushed properly.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2010-04-22 12:12:40 +02:00
parent 8044f7f468
commit 5163d90076
2 changed files with 10 additions and 0 deletions
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8
fs/coda/inode.c
View File

@ -167,6 +167,10 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
return -EBUSY;
}
error = bdi_setup_and_register(&vc->bdi, "coda", BDI_CAP_MAP_COPY);
if (error)
goto bdi_err;
vc->vc_sb = sb;
sb->s_fs_info = vc;
@ -175,6 +179,7 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
sb->s_blocksize_bits = 12;
sb->s_magic = CODA_SUPER_MAGIC;
sb->s_op = &coda_super_operations;
sb->s_bdi = &vc->bdi;
/* get root fid from Venus: this needs the root inode */
error = venus_rootfid(sb, &fid);
@ -200,6 +205,8 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
return 0;
error:
bdi_destroy(&vc->bdi);
bdi_err:
if (root)
iput(root);
if (vc)
@ -210,6 +217,7 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent)
static void coda_put_super(struct super_block *sb)
{
bdi_destroy(&coda_vcp(sb)->bdi);
coda_vcp(sb)->vc_sb = NULL;
sb->s_fs_info = NULL;

2
include/linux/coda_psdev.h
View File

@ -1,6 +1,7 @@
#ifndef __CODA_PSDEV_H
#define __CODA_PSDEV_H
#include <linux/backing-dev.h>
#include <linux/magic.h>
#define CODA_PSDEV_MAJOR 67
@ -17,6 +18,7 @@ struct venus_comm {
struct list_head vc_processing;
int vc_inuse;
struct super_block *vc_sb;
struct backing_dev_info bdi;
};