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192852be8b
We need to be able to change the way XFS behaviours in error conditions depending on the type of underlying storage. This is necessary for handling non-traditional block devices with extended error cases, such as thin provisioned devices that can return ENOSPC as an IO error. Introduce the basic sysfs infrastructure needed to define and configure error behaviours. This is done to be generic enough to extend to configuring behaviour in other error conditions, such as ENOMEM, which also has different desired behaviours according to machine configuration. Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*
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* Copyright (c) 2014 Red Hat, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_SYSFS_H__
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#define __XFS_SYSFS_H__
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extern struct kobj_type xfs_mp_ktype; /* xfs_mount */
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extern struct kobj_type xfs_dbg_ktype; /* debug */
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extern struct kobj_type xfs_log_ktype; /* xlog */
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extern struct kobj_type xfs_stats_ktype; /* stats */
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static inline struct xfs_kobj *
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to_kobj(struct kobject *kobject)
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{
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return container_of(kobject, struct xfs_kobj, kobject);
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}
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static inline void
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xfs_sysfs_release(struct kobject *kobject)
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{
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struct xfs_kobj *kobj = to_kobj(kobject);
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complete(&kobj->complete);
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}
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static inline int
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xfs_sysfs_init(
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struct xfs_kobj *kobj,
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struct kobj_type *ktype,
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struct xfs_kobj *parent_kobj,
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const char *name)
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{
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init_completion(&kobj->complete);
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return kobject_init_and_add(&kobj->kobject, ktype,
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&parent_kobj->kobject, "%s", name);
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}
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static inline void
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xfs_sysfs_del(
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struct xfs_kobj *kobj)
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{
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kobject_del(&kobj->kobject);
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kobject_put(&kobj->kobject);
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wait_for_completion(&kobj->complete);
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}
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int xfs_error_sysfs_init(struct xfs_mount *mp);
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void xfs_error_sysfs_del(struct xfs_mount *mp);
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#endif /* __XFS_SYSFS_H__ */
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