Revision ad69c389ec110ea54f8b0c0884b255340ef1c736 authored by Seth Forshee on 09 February 2021, 21:42:17 UTC, committed by Linus Torvalds on 10 February 2021, 01:26:44 UTC
As with s390, alpha is a 64-bit architecture with a 32-bit ino_t. With CONFIG_TMPFS_INODE64=y tmpfs mounts will get 64-bit inode numbers and display "inode64" in the mount options, whereas passing "inode64" in the mount options will fail. This leads to erroneous behaviours such as this: # mkdir mnt # mount -t tmpfs nodev mnt # mount -o remount,rw mnt mount: /home/ubuntu/mnt: mount point not mounted or bad option. Prevent CONFIG_TMPFS_INODE64 from being selected on alpha. Link: https://lkml.kernel.org/r/20210208215726.608197-1-seth.forshee@canonical.com Fixes: ea3271f7196c ("tmpfs: support 64-bit inums per-sb") Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: Chris Down <chris@chrisdown.name> Cc: Amir Goldstein <amir73il@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: <stable@vger.kernel.org> [5.9+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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rz1000.c
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 1995-1998 Linus Torvalds & author (see below)
*/
/*
* Principal Author: mlord@pobox.com (Mark Lord)
*
* See linux/MAINTAINERS for address of current maintainer.
*
* This file provides support for disabling the buggy read-ahead
* mode of the RZ1000 IDE chipset, commonly used on Intel motherboards.
*
* Dunno if this fixes both ports, or only the primary port (?).
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/ide.h>
#include <linux/init.h>
#define DRV_NAME "rz1000"
static int rz1000_disable_readahead(struct pci_dev *dev)
{
u16 reg;
if (!pci_read_config_word (dev, 0x40, ®) &&
!pci_write_config_word(dev, 0x40, reg & 0xdfff)) {
printk(KERN_INFO "%s: disabled chipset read-ahead "
"(buggy RZ1000/RZ1001)\n", pci_name(dev));
return 0;
} else {
printk(KERN_INFO "%s: serialized, disabled unmasking "
"(buggy RZ1000/RZ1001)\n", pci_name(dev));
return 1;
}
}
static const struct ide_port_info rz1000_chipset = {
.name = DRV_NAME,
.host_flags = IDE_HFLAG_NO_DMA,
};
static int rz1000_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
struct ide_port_info d = rz1000_chipset;
int rc;
rc = pci_enable_device(dev);
if (rc)
return rc;
if (rz1000_disable_readahead(dev)) {
d.host_flags |= IDE_HFLAG_SERIALIZE;
d.host_flags |= IDE_HFLAG_NO_UNMASK_IRQS;
}
return ide_pci_init_one(dev, &d, NULL);
}
static void rz1000_remove(struct pci_dev *dev)
{
ide_pci_remove(dev);
pci_disable_device(dev);
}
static const struct pci_device_id rz1000_pci_tbl[] = {
{ PCI_VDEVICE(PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000), 0 },
{ PCI_VDEVICE(PCTECH, PCI_DEVICE_ID_PCTECH_RZ1001), 0 },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, rz1000_pci_tbl);
static struct pci_driver rz1000_pci_driver = {
.name = "RZ1000_IDE",
.id_table = rz1000_pci_tbl,
.probe = rz1000_init_one,
.remove = rz1000_remove,
};
static int __init rz1000_ide_init(void)
{
return ide_pci_register_driver(&rz1000_pci_driver);
}
static void __exit rz1000_ide_exit(void)
{
pci_unregister_driver(&rz1000_pci_driver);
}
module_init(rz1000_ide_init);
module_exit(rz1000_ide_exit);
MODULE_AUTHOR("Andre Hedrick");
MODULE_DESCRIPTION("PCI driver module for RZ1000 IDE");
MODULE_LICENSE("GPL");
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