lkml.org 
[lkml]   [2022]   [May]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v5 1/2] fs/dcache: add d_compare() helper support
From
Date

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
>>

\
 
 \ /
  Last update: 2022-05-24 03:33    [W:0.088 / U:1.520 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site