diff options
Diffstat (limited to 'fs/kernfs')
-rw-r--r-- | fs/kernfs/dir.c | 86 |
1 files changed, 43 insertions, 43 deletions
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index 7e0e62deab53..33166ec90a11 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -548,49 +548,6 @@ void kernfs_put(struct kernfs_node *kn) } EXPORT_SYMBOL_GPL(kernfs_put); -static int kernfs_dop_revalidate(struct dentry *dentry, unsigned int flags) -{ - struct kernfs_node *kn; - - if (flags & LOOKUP_RCU) - return -ECHILD; - - /* Always perform fresh lookup for negatives */ - if (d_really_is_negative(dentry)) - goto out_bad_unlocked; - - kn = kernfs_dentry_node(dentry); - mutex_lock(&kernfs_mutex); - - /* The kernfs node has been deactivated */ - if (!kernfs_active(kn)) - goto out_bad; - - /* The kernfs node has been moved? */ - if (kernfs_dentry_node(dentry->d_parent) != kn->parent) - goto out_bad; - - /* The kernfs node has been renamed */ - if (strcmp(dentry->d_name.name, kn->name) != 0) - goto out_bad; - - /* The kernfs node has been moved to a different namespace */ - if (kn->parent && kernfs_ns_enabled(kn->parent) && - kernfs_info(dentry->d_sb)->ns != kn->ns) - goto out_bad; - - mutex_unlock(&kernfs_mutex); - return 1; -out_bad: - mutex_unlock(&kernfs_mutex); -out_bad_unlocked: - return 0; -} - -const struct dentry_operations kernfs_dops = { - .d_revalidate = kernfs_dop_revalidate, -}; - /** * kernfs_node_from_dentry - determine kernfs_node associated with a dentry * @dentry: the dentry in question @@ -1073,6 +1030,49 @@ struct kernfs_node *kernfs_create_empty_dir(struct kernfs_node *parent, return ERR_PTR(rc); } +static int kernfs_dop_revalidate(struct dentry *dentry, unsigned int flags) +{ + struct kernfs_node *kn; + + if (flags & LOOKUP_RCU) + return -ECHILD; + + /* Always perform fresh lookup for negatives */ + if (d_really_is_negative(dentry)) + goto out_bad_unlocked; + + kn = kernfs_dentry_node(dentry); + mutex_lock(&kernfs_mutex); + + /* The kernfs node has been deactivated */ + if (!kernfs_active(kn)) + goto out_bad; + + /* The kernfs node has been moved? */ + if (kernfs_dentry_node(dentry->d_parent) != kn->parent) + goto out_bad; + + /* The kernfs node has been renamed */ + if (strcmp(dentry->d_name.name, kn->name) != 0) + goto out_bad; + + /* The kernfs node has been moved to a different namespace */ + if (kn->parent && kernfs_ns_enabled(kn->parent) && + kernfs_info(dentry->d_sb)->ns != kn->ns) + goto out_bad; + + mutex_unlock(&kernfs_mutex); + return 1; +out_bad: + mutex_unlock(&kernfs_mutex); +out_bad_unlocked: + return 0; +} + +const struct dentry_operations kernfs_dops = { + .d_revalidate = kernfs_dop_revalidate, +}; + static struct dentry *kernfs_iop_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) |