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mm: bdi init hooks

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provide BDI constructor/destructor hooks

[[email protected]: compile fix]
Signed-off-by: Peter Zijlstra <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Peter Zijlstra 2007-10-16 23:25:46 -07:00 • committed by Linus Torvalds
commit e0bf68ddec
19 changed files with 131 additions and 7 deletions
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20
drivers/block/rd.c
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@ -411,6 +411,9 @@ static void __exit rd_cleanup(void)
blk_cleanup_queue(rd_queue[i]);
}
unregister_blkdev(RAMDISK_MAJOR, "ramdisk");
bdi_destroy(&rd_file_backing_dev_info);
bdi_destroy(&rd_backing_dev_info);
}
/*
@ -419,7 +422,19 @@ static void __exit rd_cleanup(void)
static int __init rd_init(void)
{
int i;
int err = -ENOMEM;
int err;
err = bdi_init(&rd_backing_dev_info);
if (err)
goto out2;
err = bdi_init(&rd_file_backing_dev_info);
if (err) {
bdi_destroy(&rd_backing_dev_info);
goto out2;
}
err = -ENOMEM;
if (rd_blocksize > PAGE_SIZE || rd_blocksize < 512 ||
(rd_blocksize & (rd_blocksize-1))) {
@ -473,6 +488,9 @@ out:
put_disk(rd_disks[i]);
blk_cleanup_queue(rd_queue[i]);
}
bdi_destroy(&rd_backing_dev_info);
bdi_destroy(&rd_file_backing_dev_info);
out2:
return err;
}