| Message ID | 20220516122046.40655-2-xiubli@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ceph: wait async unlink to finish | expand |
On Mon, 2022-05-16 at 20:20 +0800, Xiubo Li wrote: > Signed-off-by: Xiubo Li <xiubli@redhat.com> > --- > 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 *); I wonder if we ought to just un-inline and export d_same_name instead? Still, this is less disruptive and the dcache code is hugely performance sensitive. It's possible that inlining that function makes a difference. Reviewed-by: Jeff Layton <jlayton@kernel.org>
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 *);
Signed-off-by: Xiubo Li <xiubli@redhat.com> --- fs/dcache.c | 15 +++++++++++++++ include/linux/dcache.h | 2 ++ 2 files changed, 17 insertions(+)