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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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0027dd5bc2
We can't use LKM_LOCAL for new dentry locks because an unlink and subsequent re-create of a name/inode pair may result in the lock still being mastered somewhere in the cluster. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/* -*- mode: c; c-basic-offset: 8; -*-
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* vim: noexpandtab sw=8 ts=8 sts=0:
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*
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* dcache.h
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*
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* Function prototypes
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*
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* Copyright (C) 2002, 2004 Oracle. 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
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will 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 GNU
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* 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
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef OCFS2_DCACHE_H
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#define OCFS2_DCACHE_H
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extern struct dentry_operations ocfs2_dentry_ops;
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struct ocfs2_dentry_lock {
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unsigned int dl_count;
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u64 dl_parent_blkno;
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/*
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* The ocfs2_dentry_lock keeps an inode reference until
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* dl_lockres has been destroyed. This is usually done in
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* ->d_iput() anyway, so there should be minimal impact.
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*/
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struct inode *dl_inode;
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struct ocfs2_lock_res dl_lockres;
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};
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int ocfs2_dentry_attach_lock(struct dentry *dentry, struct inode *inode,
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u64 parent_blkno);
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void ocfs2_dentry_lock_put(struct ocfs2_super *osb,
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struct ocfs2_dentry_lock *dl);
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struct dentry *ocfs2_find_local_alias(struct inode *inode, u64 parent_blkno,
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int skip_unhashed);
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void ocfs2_dentry_move(struct dentry *dentry, struct dentry *target,
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struct inode *old_dir, struct inode *new_dir);
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extern spinlock_t dentry_attach_lock;
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#endif /* OCFS2_DCACHE_H */
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