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4bca7e80b6
noop_backing_dev_info is used by superblocks of various pseudofilesystems such as kdevtmpfs. After commit10e1407310("writeback: Fix inode->i_io_list not be protected by inode->i_lock error") this broke because __mark_inode_dirty() started to access more fields from noop_backing_dev_info and this led to crashes inside locked_inode_to_wb_and_lock_list() called from __mark_inode_dirty(). Fix the problem by initializing noop_backing_dev_info before the filesystems get mounted. Fixes:10e1407310("writeback: Fix inode->i_io_list not be protected by inode->i_lock error") Reported-and-tested-by: Suzuki K Poulose <suzuki.poulose@arm.com> Reported-and-tested-by: Alexandru Elisei <alexandru.elisei@arm.com> Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
42 lines
875 B
C
42 lines
875 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2002-3 Patrick Mochel
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* Copyright (c) 2002-3 Open Source Development Labs
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*/
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#include <linux/device.h>
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#include <linux/init.h>
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#include <linux/memory.h>
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#include <linux/of.h>
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#include <linux/backing-dev.h>
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#include "base.h"
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/**
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* driver_init - initialize driver model.
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*
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* Call the driver model init functions to initialize their
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* subsystems. Called early from init/main.c.
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*/
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void __init driver_init(void)
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{
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/* These are the core pieces */
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bdi_init(&noop_backing_dev_info);
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devtmpfs_init();
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devices_init();
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buses_init();
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classes_init();
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firmware_init();
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hypervisor_init();
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/* These are also core pieces, but must come after the
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* core core pieces.
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*/
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of_core_init();
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platform_bus_init();
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auxiliary_bus_init();
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cpu_dev_init();
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memory_dev_init();
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node_dev_init();
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container_dev_init();
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}
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