Messages in this thread | | | Subject | Re: [PATCH v5 1/2] fs/dcache: add d_compare() helper support | From | Xiubo Li <> | Date | Tue, 24 May 2022 09:32:14 +0800 |
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On 5/24/22 4:11 AM, Matthew Wilcox wrote: > On Thu, May 19, 2022 at 06:18:45PM +0800, Xiubo Li wrote: >> Reviewed-by: Jeff Layton <jlayton@kernel.org> >> Signed-off-by: Xiubo Li <xiubli@redhat.com> > ... empty commit message?
Will add it.
Thanks.
>> --- >> fs/dcache.c | 15 +++++++++++++++ >> include/linux/dcache.h | 2 ++ >> 2 files changed, 17 insertions(+) >> >> diff --git a/fs/dcache.c b/fs/dcache.c >> index 93f4f5ee07bf..95a72f92a94b 100644 >> --- a/fs/dcache.c >> +++ b/fs/dcache.c >> @@ -2262,6 +2262,21 @@ static inline bool d_same_name(const struct dentry *dentry, >> name) == 0; >> } >> >> +/** >> + * d_compare - compare dentry name with case-exact name >> + * @parent: parent dentry >> + * @dentry: the negative dentry that was passed to the parent's lookup func >> + * @name: the case-exact name to be associated with the returned dentry >> + * >> + * Return: 0 if names are same, or 1 >> + */ >> +bool d_compare(const struct dentry *parent, const struct dentry *dentry, >> + const struct qstr *name) >> +{ >> + return !d_same_name(dentry, parent, name); >> +} >> +EXPORT_SYMBOL(d_compare); >> + >> /** >> * __d_lookup_rcu - search for a dentry (racy, store-free) >> * @parent: parent dentry >> diff --git a/include/linux/dcache.h b/include/linux/dcache.h >> index f5bba51480b2..444b2230e5c3 100644 >> --- a/include/linux/dcache.h >> +++ b/include/linux/dcache.h >> @@ -233,6 +233,8 @@ extern struct dentry * d_alloc_parallel(struct dentry *, const struct qstr *, >> wait_queue_head_t *); >> extern struct dentry * d_splice_alias(struct inode *, struct dentry *); >> extern struct dentry * d_add_ci(struct dentry *, struct inode *, struct qstr *); >> +extern bool d_compare(const struct dentry *parent, const struct dentry *dentry, >> + const struct qstr *name); >> extern struct dentry * d_exact_alias(struct dentry *, struct inode *); >> extern struct dentry *d_find_any_alias(struct inode *inode); >> extern struct dentry * d_obtain_alias(struct inode *); >> -- >> 2.36.0.rc1 >>
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