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![Linus Torvalds](/assets/img/avatar_default.png)
Here is the "big" driver core and debugfs changes for 5.3-rc1 It's a lot of different patches, all across the tree due to some api changes and lots of debugfs cleanups. Because of this, there is going to be some merge issues with your tree at the moment, I'll follow up with the expected resolutions to make it easier for you. Other than the debugfs cleanups, in this set of changes we have: - bus iteration function cleanups (will cause build warnings with s390 and coresight drivers in your tree) - scripts/get_abi.pl tool to display and parse Documentation/ABI entries in a simple way - cleanups to Documenatation/ABI/ entries to make them parse easier due to typos and other minor things - default_attrs use for some ktype users - driver model documentation file conversions to .rst - compressed firmware file loading - deferred probe fixes All of these have been in linux-next for a while, with a bunch of merge issues that Stephen has been patient with me for. Other than the merge issues, functionality is working properly in linux-next :) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXSgpnQ8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykcwgCfS30OR4JmwZydWGJ7zK/cHqk+KjsAnjOxjC1K LpRyb3zX29oChFaZkc5a =XrEZ -----END PGP SIGNATURE----- Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core and debugfs updates from Greg KH: "Here is the "big" driver core and debugfs changes for 5.3-rc1 It's a lot of different patches, all across the tree due to some api changes and lots of debugfs cleanups. Other than the debugfs cleanups, in this set of changes we have: - bus iteration function cleanups - scripts/get_abi.pl tool to display and parse Documentation/ABI entries in a simple way - cleanups to Documenatation/ABI/ entries to make them parse easier due to typos and other minor things - default_attrs use for some ktype users - driver model documentation file conversions to .rst - compressed firmware file loading - deferred probe fixes All of these have been in linux-next for a while, with a bunch of merge issues that Stephen has been patient with me for" * tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits) debugfs: make error message a bit more verbose orangefs: fix build warning from debugfs cleanup patch ubifs: fix build warning after debugfs cleanup patch driver: core: Allow subsystems to continue deferring probe drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT arch_topology: Remove error messages on out-of-memory conditions lib: notifier-error-inject: no need to check return value of debugfs_create functions swiotlb: no need to check return value of debugfs_create functions ceph: no need to check return value of debugfs_create functions sunrpc: no need to check return value of debugfs_create functions ubifs: no need to check return value of debugfs_create functions orangefs: no need to check return value of debugfs_create functions nfsd: no need to check return value of debugfs_create functions lib: 842: no need to check return value of debugfs_create functions debugfs: provide pr_fmt() macro debugfs: log errors when something goes wrong drivers: s390/cio: Fix compilation warning about const qualifiers drivers: Add generic helper to match by of_node driver_find_device: Unify the match function with class_find_device() bus_find_device: Unify the match callback with class_find_device ...
728 lines
18 KiB
C
728 lines
18 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/sched.h>
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#include <linux/cred.h>
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/buffer_head.h>
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#include <linux/module.h>
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#include <linux/kobject.h>
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#include <linux/uaccess.h>
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#include <linux/gfs2_ondisk.h>
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#include <linux/genhd.h>
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#include "gfs2.h"
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#include "incore.h"
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#include "sys.h"
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#include "super.h"
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#include "glock.h"
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#include "quota.h"
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#include "util.h"
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#include "glops.h"
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#include "recovery.h"
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struct gfs2_attr {
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struct attribute attr;
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ssize_t (*show)(struct gfs2_sbd *, char *);
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ssize_t (*store)(struct gfs2_sbd *, const char *, size_t);
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};
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static ssize_t gfs2_attr_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
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struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
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return a->show ? a->show(sdp, buf) : 0;
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}
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static ssize_t gfs2_attr_store(struct kobject *kobj, struct attribute *attr,
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const char *buf, size_t len)
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{
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struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
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struct gfs2_attr *a = container_of(attr, struct gfs2_attr, attr);
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return a->store ? a->store(sdp, buf, len) : len;
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}
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static const struct sysfs_ops gfs2_attr_ops = {
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.show = gfs2_attr_show,
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.store = gfs2_attr_store,
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};
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static struct kset *gfs2_kset;
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static ssize_t id_show(struct gfs2_sbd *sdp, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%u:%u\n",
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MAJOR(sdp->sd_vfs->s_dev), MINOR(sdp->sd_vfs->s_dev));
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}
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static ssize_t fsname_show(struct gfs2_sbd *sdp, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%s\n", sdp->sd_fsname);
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}
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static ssize_t uuid_show(struct gfs2_sbd *sdp, char *buf)
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{
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struct super_block *s = sdp->sd_vfs;
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buf[0] = '\0';
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if (uuid_is_null(&s->s_uuid))
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return 0;
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return snprintf(buf, PAGE_SIZE, "%pUB\n", &s->s_uuid);
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}
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static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf)
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{
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struct super_block *sb = sdp->sd_vfs;
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int frozen = (sb->s_writers.frozen == SB_UNFROZEN) ? 0 : 1;
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return snprintf(buf, PAGE_SIZE, "%d\n", frozen);
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}
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static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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int error, n;
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error = kstrtoint(buf, 0, &n);
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if (error)
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return error;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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switch (n) {
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case 0:
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error = thaw_super(sdp->sd_vfs);
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break;
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case 1:
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error = freeze_super(sdp->sd_vfs);
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break;
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default:
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return -EINVAL;
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}
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if (error) {
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fs_warn(sdp, "freeze %d error %d\n", n, error);
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return error;
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}
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return len;
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}
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static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf)
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{
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unsigned int b = test_bit(SDF_WITHDRAWN, &sdp->sd_flags);
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return snprintf(buf, PAGE_SIZE, "%u\n", b);
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}
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static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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int error, val;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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error = kstrtoint(buf, 0, &val);
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if (error)
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return error;
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if (val != 1)
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return -EINVAL;
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gfs2_lm_withdraw(sdp, "withdrawing from cluster at user's request\n");
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return len;
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}
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static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf,
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size_t len)
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{
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int error, val;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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error = kstrtoint(buf, 0, &val);
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if (error)
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return error;
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if (val != 1)
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return -EINVAL;
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gfs2_statfs_sync(sdp->sd_vfs, 0);
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return len;
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}
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static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf,
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size_t len)
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{
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int error, val;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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error = kstrtoint(buf, 0, &val);
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if (error)
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return error;
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if (val != 1)
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return -EINVAL;
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gfs2_quota_sync(sdp->sd_vfs, 0);
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return len;
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}
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static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf,
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size_t len)
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{
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struct kqid qid;
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int error;
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u32 id;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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error = kstrtou32(buf, 0, &id);
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if (error)
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return error;
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qid = make_kqid(current_user_ns(), USRQUOTA, id);
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if (!qid_valid(qid))
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return -EINVAL;
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error = gfs2_quota_refresh(sdp, qid);
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return error ? error : len;
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}
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static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf,
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size_t len)
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{
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struct kqid qid;
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int error;
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u32 id;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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error = kstrtou32(buf, 0, &id);
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if (error)
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return error;
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qid = make_kqid(current_user_ns(), GRPQUOTA, id);
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if (!qid_valid(qid))
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return -EINVAL;
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error = gfs2_quota_refresh(sdp, qid);
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return error ? error : len;
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}
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static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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struct gfs2_glock *gl;
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const struct gfs2_glock_operations *glops;
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unsigned int glmode;
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unsigned int gltype;
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unsigned long long glnum;
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char mode[16];
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int rv;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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rv = sscanf(buf, "%u:%llu %15s", &gltype, &glnum,
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mode);
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if (rv != 3)
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return -EINVAL;
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if (strcmp(mode, "EX") == 0)
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glmode = LM_ST_UNLOCKED;
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else if ((strcmp(mode, "CW") == 0) || (strcmp(mode, "DF") == 0))
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glmode = LM_ST_DEFERRED;
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else if ((strcmp(mode, "PR") == 0) || (strcmp(mode, "SH") == 0))
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glmode = LM_ST_SHARED;
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else
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return -EINVAL;
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if (gltype > LM_TYPE_JOURNAL)
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return -EINVAL;
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if (gltype == LM_TYPE_NONDISK && glnum == GFS2_FREEZE_LOCK)
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glops = &gfs2_freeze_glops;
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else
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glops = gfs2_glops_list[gltype];
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if (glops == NULL)
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return -EINVAL;
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if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags))
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fs_info(sdp, "demote interface used\n");
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rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl);
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if (rv)
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return rv;
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gfs2_glock_cb(gl, glmode);
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gfs2_glock_put(gl);
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return len;
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}
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#define GFS2_ATTR(name, mode, show, store) \
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static struct gfs2_attr gfs2_attr_##name = __ATTR(name, mode, show, store)
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GFS2_ATTR(id, 0444, id_show, NULL);
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GFS2_ATTR(fsname, 0444, fsname_show, NULL);
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GFS2_ATTR(uuid, 0444, uuid_show, NULL);
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GFS2_ATTR(freeze, 0644, freeze_show, freeze_store);
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GFS2_ATTR(withdraw, 0644, withdraw_show, withdraw_store);
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GFS2_ATTR(statfs_sync, 0200, NULL, statfs_sync_store);
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GFS2_ATTR(quota_sync, 0200, NULL, quota_sync_store);
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GFS2_ATTR(quota_refresh_user, 0200, NULL, quota_refresh_user_store);
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GFS2_ATTR(quota_refresh_group, 0200, NULL, quota_refresh_group_store);
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GFS2_ATTR(demote_rq, 0200, NULL, demote_rq_store);
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static struct attribute *gfs2_attrs[] = {
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&gfs2_attr_id.attr,
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&gfs2_attr_fsname.attr,
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&gfs2_attr_uuid.attr,
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&gfs2_attr_freeze.attr,
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&gfs2_attr_withdraw.attr,
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&gfs2_attr_statfs_sync.attr,
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&gfs2_attr_quota_sync.attr,
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&gfs2_attr_quota_refresh_user.attr,
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&gfs2_attr_quota_refresh_group.attr,
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&gfs2_attr_demote_rq.attr,
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NULL,
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};
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ATTRIBUTE_GROUPS(gfs2);
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static void gfs2_sbd_release(struct kobject *kobj)
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{
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struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
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free_sbd(sdp);
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}
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static struct kobj_type gfs2_ktype = {
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.release = gfs2_sbd_release,
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.default_groups = gfs2_groups,
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.sysfs_ops = &gfs2_attr_ops,
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};
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/*
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* lock_module. Originally from lock_dlm
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*/
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static ssize_t proto_name_show(struct gfs2_sbd *sdp, char *buf)
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{
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const struct lm_lockops *ops = sdp->sd_lockstruct.ls_ops;
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return sprintf(buf, "%s\n", ops->lm_proto_name);
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}
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static ssize_t block_show(struct gfs2_sbd *sdp, char *buf)
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{
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struct lm_lockstruct *ls = &sdp->sd_lockstruct;
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ssize_t ret;
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int val = 0;
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if (test_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags))
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val = 1;
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ret = sprintf(buf, "%d\n", val);
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return ret;
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}
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static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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struct lm_lockstruct *ls = &sdp->sd_lockstruct;
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int ret, val;
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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if (val == 1)
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set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
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else if (val == 0) {
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clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags);
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smp_mb__after_atomic();
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gfs2_glock_thaw(sdp);
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} else {
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return -EINVAL;
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}
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return len;
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}
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static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf)
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{
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int val = completion_done(&sdp->sd_wdack) ? 1 : 0;
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return sprintf(buf, "%d\n", val);
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}
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static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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int ret, val;
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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if ((val == 1) &&
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!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm"))
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complete(&sdp->sd_wdack);
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else
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return -EINVAL;
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return len;
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}
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static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf)
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{
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struct lm_lockstruct *ls = &sdp->sd_lockstruct;
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return sprintf(buf, "%d\n", ls->ls_first);
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}
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static ssize_t lkfirst_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
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{
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unsigned first;
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int rv;
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rv = sscanf(buf, "%u", &first);
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if (rv != 1 || first > 1)
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return -EINVAL;
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rv = wait_for_completion_killable(&sdp->sd_locking_init);
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if (rv)
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return rv;
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spin_lock(&sdp->sd_jindex_spin);
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rv = -EBUSY;
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if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
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goto out;
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rv = -EINVAL;
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if (sdp->sd_args.ar_spectator)
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goto out;
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if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
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goto out;
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sdp->sd_lockstruct.ls_first = first;
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rv = 0;
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out:
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spin_unlock(&sdp->sd_jindex_spin);
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return rv ? rv : len;
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}
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static ssize_t first_done_show(struct gfs2_sbd *sdp, char *buf)
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{
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struct lm_lockstruct *ls = &sdp->sd_lockstruct;
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return sprintf(buf, "%d\n", !!test_bit(DFL_FIRST_MOUNT_DONE, &ls->ls_recover_flags));
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}
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int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid)
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{
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struct gfs2_jdesc *jd;
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int rv;
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/* Wait for our primary journal to be initialized */
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wait_for_completion(&sdp->sd_journal_ready);
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spin_lock(&sdp->sd_jindex_spin);
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rv = -EBUSY;
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/**
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* If we're a spectator, we use journal0, but it's not really ours.
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* So we need to wait for its recovery too. If we skip it we'd never
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* queue work to the recovery workqueue, and so its completion would
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* never clear the DFL_BLOCK_LOCKS flag, so all our locks would
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* permanently stop working.
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*/
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if (sdp->sd_jdesc->jd_jid == jid && !sdp->sd_args.ar_spectator)
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goto out;
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rv = -ENOENT;
|
|
list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) {
|
|
if (jd->jd_jid != jid && !sdp->sd_args.ar_spectator)
|
|
continue;
|
|
rv = gfs2_recover_journal(jd, false);
|
|
break;
|
|
}
|
|
out:
|
|
spin_unlock(&sdp->sd_jindex_spin);
|
|
return rv;
|
|
}
|
|
|
|
static ssize_t recover_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
|
|
{
|
|
unsigned jid;
|
|
int rv;
|
|
|
|
rv = sscanf(buf, "%u", &jid);
|
|
if (rv != 1)
|
|
return -EINVAL;
|
|
|
|
if (test_bit(SDF_NORECOVERY, &sdp->sd_flags)) {
|
|
rv = -ESHUTDOWN;
|
|
goto out;
|
|
}
|
|
|
|
rv = gfs2_recover_set(sdp, jid);
|
|
out:
|
|
return rv ? rv : len;
|
|
}
|
|
|
|
static ssize_t recover_done_show(struct gfs2_sbd *sdp, char *buf)
|
|
{
|
|
struct lm_lockstruct *ls = &sdp->sd_lockstruct;
|
|
return sprintf(buf, "%d\n", ls->ls_recover_jid_done);
|
|
}
|
|
|
|
static ssize_t recover_status_show(struct gfs2_sbd *sdp, char *buf)
|
|
{
|
|
struct lm_lockstruct *ls = &sdp->sd_lockstruct;
|
|
return sprintf(buf, "%d\n", ls->ls_recover_jid_status);
|
|
}
|
|
|
|
static ssize_t jid_show(struct gfs2_sbd *sdp, char *buf)
|
|
{
|
|
return sprintf(buf, "%d\n", sdp->sd_lockstruct.ls_jid);
|
|
}
|
|
|
|
static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len)
|
|
{
|
|
int jid;
|
|
int rv;
|
|
|
|
rv = sscanf(buf, "%d", &jid);
|
|
if (rv != 1)
|
|
return -EINVAL;
|
|
rv = wait_for_completion_killable(&sdp->sd_locking_init);
|
|
if (rv)
|
|
return rv;
|
|
spin_lock(&sdp->sd_jindex_spin);
|
|
rv = -EINVAL;
|
|
if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)
|
|
goto out;
|
|
rv = -EBUSY;
|
|
if (test_bit(SDF_NOJOURNALID, &sdp->sd_flags) == 0)
|
|
goto out;
|
|
rv = 0;
|
|
if (sdp->sd_args.ar_spectator && jid > 0)
|
|
rv = jid = -EINVAL;
|
|
sdp->sd_lockstruct.ls_jid = jid;
|
|
clear_bit(SDF_NOJOURNALID, &sdp->sd_flags);
|
|
smp_mb__after_atomic();
|
|
wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID);
|
|
out:
|
|
spin_unlock(&sdp->sd_jindex_spin);
|
|
return rv ? rv : len;
|
|
}
|
|
|
|
#define GDLM_ATTR(_name,_mode,_show,_store) \
|
|
static struct gfs2_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store)
|
|
|
|
GDLM_ATTR(proto_name, 0444, proto_name_show, NULL);
|
|
GDLM_ATTR(block, 0644, block_show, block_store);
|
|
GDLM_ATTR(withdraw, 0644, wdack_show, wdack_store);
|
|
GDLM_ATTR(jid, 0644, jid_show, jid_store);
|
|
GDLM_ATTR(first, 0644, lkfirst_show, lkfirst_store);
|
|
GDLM_ATTR(first_done, 0444, first_done_show, NULL);
|
|
GDLM_ATTR(recover, 0600, NULL, recover_store);
|
|
GDLM_ATTR(recover_done, 0444, recover_done_show, NULL);
|
|
GDLM_ATTR(recover_status, 0444, recover_status_show, NULL);
|
|
|
|
static struct attribute *lock_module_attrs[] = {
|
|
&gdlm_attr_proto_name.attr,
|
|
&gdlm_attr_block.attr,
|
|
&gdlm_attr_withdraw.attr,
|
|
&gdlm_attr_jid.attr,
|
|
&gdlm_attr_first.attr,
|
|
&gdlm_attr_first_done.attr,
|
|
&gdlm_attr_recover.attr,
|
|
&gdlm_attr_recover_done.attr,
|
|
&gdlm_attr_recover_status.attr,
|
|
NULL,
|
|
};
|
|
|
|
/*
|
|
* get and set struct gfs2_tune fields
|
|
*/
|
|
|
|
static ssize_t quota_scale_show(struct gfs2_sbd *sdp, char *buf)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE, "%u %u\n",
|
|
sdp->sd_tune.gt_quota_scale_num,
|
|
sdp->sd_tune.gt_quota_scale_den);
|
|
}
|
|
|
|
static ssize_t quota_scale_store(struct gfs2_sbd *sdp, const char *buf,
|
|
size_t len)
|
|
{
|
|
struct gfs2_tune *gt = &sdp->sd_tune;
|
|
unsigned int x, y;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
if (sscanf(buf, "%u %u", &x, &y) != 2 || !y)
|
|
return -EINVAL;
|
|
|
|
spin_lock(>->gt_spin);
|
|
gt->gt_quota_scale_num = x;
|
|
gt->gt_quota_scale_den = y;
|
|
spin_unlock(>->gt_spin);
|
|
return len;
|
|
}
|
|
|
|
static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field,
|
|
int check_zero, const char *buf, size_t len)
|
|
{
|
|
struct gfs2_tune *gt = &sdp->sd_tune;
|
|
unsigned int x;
|
|
int error;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
|
|
error = kstrtouint(buf, 0, &x);
|
|
if (error)
|
|
return error;
|
|
|
|
if (check_zero && !x)
|
|
return -EINVAL;
|
|
|
|
spin_lock(>->gt_spin);
|
|
*field = x;
|
|
spin_unlock(>->gt_spin);
|
|
return len;
|
|
}
|
|
|
|
#define TUNE_ATTR_3(name, show, store) \
|
|
static struct gfs2_attr tune_attr_##name = __ATTR(name, 0644, show, store)
|
|
|
|
#define TUNE_ATTR_2(name, store) \
|
|
static ssize_t name##_show(struct gfs2_sbd *sdp, char *buf) \
|
|
{ \
|
|
return snprintf(buf, PAGE_SIZE, "%u\n", sdp->sd_tune.gt_##name); \
|
|
} \
|
|
TUNE_ATTR_3(name, name##_show, store)
|
|
|
|
#define TUNE_ATTR(name, check_zero) \
|
|
static ssize_t name##_store(struct gfs2_sbd *sdp, const char *buf, size_t len)\
|
|
{ \
|
|
return tune_set(sdp, &sdp->sd_tune.gt_##name, check_zero, buf, len); \
|
|
} \
|
|
TUNE_ATTR_2(name, name##_store)
|
|
|
|
TUNE_ATTR(quota_warn_period, 0);
|
|
TUNE_ATTR(quota_quantum, 0);
|
|
TUNE_ATTR(max_readahead, 0);
|
|
TUNE_ATTR(complain_secs, 0);
|
|
TUNE_ATTR(statfs_slow, 0);
|
|
TUNE_ATTR(new_files_jdata, 0);
|
|
TUNE_ATTR(statfs_quantum, 1);
|
|
TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
|
|
|
|
static struct attribute *tune_attrs[] = {
|
|
&tune_attr_quota_warn_period.attr,
|
|
&tune_attr_quota_quantum.attr,
|
|
&tune_attr_max_readahead.attr,
|
|
&tune_attr_complain_secs.attr,
|
|
&tune_attr_statfs_slow.attr,
|
|
&tune_attr_statfs_quantum.attr,
|
|
&tune_attr_quota_scale.attr,
|
|
&tune_attr_new_files_jdata.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group tune_group = {
|
|
.name = "tune",
|
|
.attrs = tune_attrs,
|
|
};
|
|
|
|
static const struct attribute_group lock_module_group = {
|
|
.name = "lock_module",
|
|
.attrs = lock_module_attrs,
|
|
};
|
|
|
|
int gfs2_sys_fs_add(struct gfs2_sbd *sdp)
|
|
{
|
|
struct super_block *sb = sdp->sd_vfs;
|
|
int error;
|
|
char ro[20];
|
|
char spectator[20];
|
|
char *envp[] = { ro, spectator, NULL };
|
|
|
|
sprintf(ro, "RDONLY=%d", sb_rdonly(sb));
|
|
sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0);
|
|
|
|
sdp->sd_kobj.kset = gfs2_kset;
|
|
error = kobject_init_and_add(&sdp->sd_kobj, &gfs2_ktype, NULL,
|
|
"%s", sdp->sd_table_name);
|
|
if (error)
|
|
goto fail_reg;
|
|
|
|
error = sysfs_create_group(&sdp->sd_kobj, &tune_group);
|
|
if (error)
|
|
goto fail_reg;
|
|
|
|
error = sysfs_create_group(&sdp->sd_kobj, &lock_module_group);
|
|
if (error)
|
|
goto fail_tune;
|
|
|
|
error = sysfs_create_link(&sdp->sd_kobj,
|
|
&disk_to_dev(sb->s_bdev->bd_disk)->kobj,
|
|
"device");
|
|
if (error)
|
|
goto fail_lock_module;
|
|
|
|
kobject_uevent_env(&sdp->sd_kobj, KOBJ_ADD, envp);
|
|
return 0;
|
|
|
|
fail_lock_module:
|
|
sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);
|
|
fail_tune:
|
|
sysfs_remove_group(&sdp->sd_kobj, &tune_group);
|
|
fail_reg:
|
|
fs_err(sdp, "error %d adding sysfs files\n", error);
|
|
kobject_put(&sdp->sd_kobj);
|
|
sb->s_fs_info = NULL;
|
|
return error;
|
|
}
|
|
|
|
void gfs2_sys_fs_del(struct gfs2_sbd *sdp)
|
|
{
|
|
sysfs_remove_link(&sdp->sd_kobj, "device");
|
|
sysfs_remove_group(&sdp->sd_kobj, &tune_group);
|
|
sysfs_remove_group(&sdp->sd_kobj, &lock_module_group);
|
|
kobject_put(&sdp->sd_kobj);
|
|
}
|
|
|
|
static int gfs2_uevent(struct kset *kset, struct kobject *kobj,
|
|
struct kobj_uevent_env *env)
|
|
{
|
|
struct gfs2_sbd *sdp = container_of(kobj, struct gfs2_sbd, sd_kobj);
|
|
struct super_block *s = sdp->sd_vfs;
|
|
|
|
add_uevent_var(env, "LOCKTABLE=%s", sdp->sd_table_name);
|
|
add_uevent_var(env, "LOCKPROTO=%s", sdp->sd_proto_name);
|
|
if (!test_bit(SDF_NOJOURNALID, &sdp->sd_flags))
|
|
add_uevent_var(env, "JOURNALID=%d", sdp->sd_lockstruct.ls_jid);
|
|
if (!uuid_is_null(&s->s_uuid))
|
|
add_uevent_var(env, "UUID=%pUB", &s->s_uuid);
|
|
return 0;
|
|
}
|
|
|
|
static const struct kset_uevent_ops gfs2_uevent_ops = {
|
|
.uevent = gfs2_uevent,
|
|
};
|
|
|
|
int gfs2_sys_init(void)
|
|
{
|
|
gfs2_kset = kset_create_and_add("gfs2", &gfs2_uevent_ops, fs_kobj);
|
|
if (!gfs2_kset)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
void gfs2_sys_uninit(void)
|
|
{
|
|
kset_unregister(gfs2_kset);
|
|
}
|
|
|