diff options
| author |   Al Viro <viro@zeniv.linux.org.uk> | 2021-01-05 14:13:52 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2021-01-16 15:12:06 -0500 |
| commit | bca585d24a1719d9314d5438b0d2804a33d9bbb6 (patch) | |
| tree | aa7d4a45ea39b63deb8e0ebbb82f1c9d2aa0ee0e /include/linux/dcache.h | |
| parent | dump_common_audit_data(): fix racy accesses to ->d_name (diff) | |
| download | linux-dev-bca585d24a1719d9314d5438b0d2804a33d9bbb6.tar.xz linux-dev-bca585d24a1719d9314d5438b0d2804a33d9bbb6.zip | |
new helper: d_find_alias_rcu()
similar to d_find_alias(inode), except that
* the caller must be holding rcu_read_lock()
* inode must not be freed until matching rcu_read_unlock()
* result is *NOT* pinned and can only be dereferenced until
the matching rcu_read_unlock().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/dcache.h')
| -rw-r--r-- | include/linux/dcache.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/dcache.h b/include/linux/dcache.h index d7b369fc15d3..c1e48014106f 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -262,6 +262,8 @@ extern void d_tmpfile(struct dentry *, struct inode *); extern struct dentry *d_find_alias(struct inode *); extern void d_prune_aliases(struct inode *); +extern struct dentry *d_find_alias_rcu(struct inode *); + /* test whether we have any submounts in a subdir tree */ extern int path_has_submounts(const struct path *); |