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Commit 976e48f8 authored by Jan Kara's avatar Jan Kara Committed by Jens Axboe
Browse files

bdi: Initialize noop_backing_dev_info properly 



Properly initialize this backing dev info so that writeback code does not
barf when getting to it e.g. via sb->s_bdi.

Cc: stable@kernel.org
Signed-off-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
parent 180be2a0

mm/backing-dev.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -30,6 +30,7 @@ EXPORT_SYMBOL_GPL(default_backing_dev_info); 




struct backing_dev_info noop_backing_dev_info = {

struct backing_dev_info noop_backing_dev_info = {

	.name		= "noop",

	.name		= "noop",

	.capabilities	= BDI_CAP_NO_ACCT_AND_WRITEBACK,

};

};

EXPORT_SYMBOL_GPL(noop_backing_dev_info);

EXPORT_SYMBOL_GPL(noop_backing_dev_info);
@@ -243,6 +244,7 @@ static int __init default_bdi_init(void) 
	err = bdi_init(&default_backing_dev_info);

	err = bdi_init(&default_backing_dev_info);

	if (!err)

	if (!err)

		bdi_register(&default_backing_dev_info, NULL, "default");

		bdi_register(&default_backing_dev_info, NULL, "default");

	err = bdi_init(&noop_backing_dev_info);





	return err;

	return err;

}

}