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dafbe68973
Simplify p9_fid_put cleanup path in many 9p functions since the function is noop on null or error fids. Also make the *_add_fid() helpers "steal" the fid by nulling its pointer, so put after them will be noop. This should lead to no change of behaviour Link: https://lkml.kernel.org/r/20220612085330.1451496-7-asmadeus@codewreck.org Reviewed-by: Tyler Hicks <tyhicks@linux.microsoft.com> Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
35 lines
925 B
C
35 lines
925 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* V9FS FID Management
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*
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* Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com>
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*/
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#ifndef FS_9P_FID_H
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#define FS_9P_FID_H
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#include <linux/list.h>
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struct p9_fid *v9fs_fid_lookup(struct dentry *dentry);
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static inline struct p9_fid *v9fs_parent_fid(struct dentry *dentry)
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{
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return v9fs_fid_lookup(dentry->d_parent);
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}
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void v9fs_fid_add(struct dentry *dentry, struct p9_fid **fid);
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struct p9_fid *v9fs_writeback_fid(struct dentry *dentry);
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void v9fs_open_fid_add(struct inode *inode, struct p9_fid **fid);
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static inline struct p9_fid *clone_fid(struct p9_fid *fid)
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{
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return IS_ERR(fid) ? fid : p9_client_walk(fid, 0, NULL, 1);
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}
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static inline struct p9_fid *v9fs_fid_clone(struct dentry *dentry)
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{
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struct p9_fid *fid, *nfid;
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fid = v9fs_fid_lookup(dentry);
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if (!fid || IS_ERR(fid))
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return fid;
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nfid = clone_fid(fid);
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p9_fid_put(fid);
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return nfid;
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}
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#endif
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