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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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448678a0f3
get_dcookie() is always called with a dentry and a vfsmount from a struct path. Make get_dcookie() take it directly as an argument. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Jan Blunck <jblunck@suse.de> Acked-by: Christoph Hellwig <hch@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
/*
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* dcookies.h
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*
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* Persistent cookie-path mappings
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*
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* Copyright 2002 John Levon <levon@movementarian.org>
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*/
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#ifndef DCOOKIES_H
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#define DCOOKIES_H
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#ifdef CONFIG_PROFILING
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#include <linux/dcache.h>
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#include <linux/path.h>
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#include <linux/types.h>
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struct dcookie_user;
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/**
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* dcookie_register - register a user of dcookies
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*
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* Register as a dcookie user. Returns %NULL on failure.
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*/
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struct dcookie_user * dcookie_register(void);
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/**
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* dcookie_unregister - unregister a user of dcookies
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*
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* Unregister as a dcookie user. This may invalidate
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* any dcookie values returned from get_dcookie().
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*/
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void dcookie_unregister(struct dcookie_user * user);
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/**
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* get_dcookie - acquire a dcookie
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*
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* Convert the given dentry/vfsmount pair into
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* a cookie value.
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*
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* Returns -EINVAL if no living task has registered as a
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* dcookie user.
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*
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* Returns 0 on success, with *cookie filled in
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*/
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int get_dcookie(struct path *path, unsigned long *cookie);
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#else
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static inline struct dcookie_user * dcookie_register(void)
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{
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return NULL;
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}
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static inline void dcookie_unregister(struct dcookie_user * user)
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{
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return;
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}
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static inline int get_dcookie(struct path *path, unsigned long *cookie)
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{
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return -ENOSYS;
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}
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#endif /* CONFIG_PROFILING */
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#endif /* DCOOKIES_H */
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