diff options
| author | Xiubo Li <xiubli@redhat.com> | 2022-05-16 11:23:19 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2022-08-03 00:54:12 +0200 |
| commit | 4f48d5da81ee7004a789c8aac2d0dfb2514c37f1 (patch) | |
| tree | a4bb8947e618bde2da095dd19648fb3f38b59f16 | |
| parent | 7c2e3d9194f78770fdfd688d0eecfe7132f83138 (diff) | |
fs/dcache: export d_same_name() helper
Compare dentry name with case-exact name, return true if names
are same, or false.
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| -rw-r--r-- | fs/dcache.c | 15 | ||||
| -rw-r--r-- | include/linux/dcache.h | 2 |
2 files changed, 13 insertions, 4 deletions
diff --git a/fs/dcache.c b/fs/dcache.c index 93f4f5ee07bf..a409312ee0df 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2247,10 +2247,16 @@ struct dentry *d_add_ci(struct dentry *dentry, struct inode *inode, } EXPORT_SYMBOL(d_add_ci); - -static inline bool d_same_name(const struct dentry *dentry, - const struct dentry *parent, - const struct qstr *name) +/** + * d_same_name - 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: true if names are same, or false + */ +bool d_same_name(const struct dentry *dentry, const struct dentry *parent, + const struct qstr *name) { if (likely(!(parent->d_flags & DCACHE_OP_COMPARE))) { if (dentry->d_name.len != name->len) @@ -2261,6 +2267,7 @@ static inline bool d_same_name(const struct dentry *dentry, dentry->d_name.len, dentry->d_name.name, name) == 0; } +EXPORT_SYMBOL_GPL(d_same_name); /** * __d_lookup_rcu - search for a dentry (racy, store-free) diff --git a/include/linux/dcache.h b/include/linux/dcache.h index f5bba51480b2..bb72361834de 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_same_name(const struct dentry *dentry, const struct dentry *parent, + 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 *); |