VFS: fs/cachefiles: d_backing_inode() annotations
Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Родитель
dea655c28a
Коммит
466b77bc95
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@ -123,11 +123,11 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache)
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/* check parameters */
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ret = -EOPNOTSUPP;
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if (!root->d_inode ||
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!root->d_inode->i_op->lookup ||
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!root->d_inode->i_op->mkdir ||
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!root->d_inode->i_op->setxattr ||
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!root->d_inode->i_op->getxattr ||
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if (d_is_negative(root) ||
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!d_backing_inode(root)->i_op->lookup ||
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!d_backing_inode(root)->i_op->mkdir ||
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!d_backing_inode(root)->i_op->setxattr ||
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!d_backing_inode(root)->i_op->getxattr ||
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!root->d_sb->s_op->statfs ||
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!root->d_sb->s_op->sync_fs)
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goto error_unsupported;
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@ -441,7 +441,7 @@ static int cachefiles_attr_changed(struct fscache_object *_object)
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fscache_set_store_limit(&object->fscache, ni_size);
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oi_size = i_size_read(object->backer->d_inode);
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oi_size = i_size_read(d_backing_inode(object->backer));
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if (oi_size == ni_size)
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return 0;
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@ -355,7 +355,7 @@ try_again:
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return -EIO;
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}
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if (grave->d_inode) {
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if (d_is_positive(grave)) {
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unlock_rename(cache->graveyard, dir);
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dput(grave);
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grave = NULL;
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@ -415,7 +415,7 @@ int cachefiles_delete_object(struct cachefiles_cache *cache,
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_enter(",OBJ%x{%p}", object->fscache.debug_id, object->dentry);
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ASSERT(object->dentry);
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ASSERT(object->dentry->d_inode);
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ASSERT(d_backing_inode(object->dentry));
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ASSERT(object->dentry->d_parent);
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dir = dget_parent(object->dentry);
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@ -473,7 +473,7 @@ int cachefiles_walk_to_object(struct cachefiles_object *parent,
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path.mnt = cache->mnt;
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ASSERT(parent->dentry);
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ASSERT(parent->dentry->d_inode);
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ASSERT(d_backing_inode(parent->dentry));
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if (!(d_is_dir(parent->dentry))) {
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// TODO: convert file to dir
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@ -505,21 +505,21 @@ lookup_again:
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if (IS_ERR(next))
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goto lookup_error;
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_debug("next -> %p %s", next, next->d_inode ? "positive" : "negative");
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_debug("next -> %p %s", next, d_backing_inode(next) ? "positive" : "negative");
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if (!key)
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object->new = !next->d_inode;
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object->new = !d_backing_inode(next);
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/* if this element of the path doesn't exist, then the lookup phase
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* failed, and we can release any readers in the certain knowledge that
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* there's nothing for them to actually read */
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if (!next->d_inode)
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if (d_is_negative(next))
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fscache_object_lookup_negative(&object->fscache);
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/* we need to create the object if it's negative */
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if (key || object->type == FSCACHE_COOKIE_TYPE_INDEX) {
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/* index objects and intervening tree levels must be subdirs */
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if (!next->d_inode) {
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if (d_is_negative(next)) {
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ret = cachefiles_has_space(cache, 1, 0);
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if (ret < 0)
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goto create_error;
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@ -534,21 +534,21 @@ lookup_again:
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if (ret < 0)
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goto create_error;
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ASSERT(next->d_inode);
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ASSERT(d_backing_inode(next));
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_debug("mkdir -> %p{%p{ino=%lu}}",
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next, next->d_inode, next->d_inode->i_ino);
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next, d_backing_inode(next), d_backing_inode(next)->i_ino);
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} else if (!d_can_lookup(next)) {
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pr_err("inode %lu is not a directory\n",
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next->d_inode->i_ino);
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d_backing_inode(next)->i_ino);
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ret = -ENOBUFS;
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goto error;
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}
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} else {
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/* non-index objects start out life as files */
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if (!next->d_inode) {
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if (d_is_negative(next)) {
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ret = cachefiles_has_space(cache, 1, 0);
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if (ret < 0)
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goto create_error;
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@ -563,16 +563,16 @@ lookup_again:
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if (ret < 0)
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goto create_error;
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ASSERT(next->d_inode);
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ASSERT(d_backing_inode(next));
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_debug("create -> %p{%p{ino=%lu}}",
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next, next->d_inode, next->d_inode->i_ino);
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next, d_backing_inode(next), d_backing_inode(next)->i_ino);
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} else if (!d_can_lookup(next) &&
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!d_is_reg(next)
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) {
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pr_err("inode %lu is not a file or directory\n",
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next->d_inode->i_ino);
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d_backing_inode(next)->i_ino);
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ret = -ENOBUFS;
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goto error;
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}
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@ -646,7 +646,7 @@ lookup_again:
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const struct address_space_operations *aops;
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ret = -EPERM;
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aops = object->dentry->d_inode->i_mapping->a_ops;
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aops = d_backing_inode(object->dentry)->i_mapping->a_ops;
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if (!aops->bmap)
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goto check_error;
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@ -659,7 +659,7 @@ lookup_again:
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object->new = 0;
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fscache_obtained_object(&object->fscache);
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_leave(" = 0 [%lu]", object->dentry->d_inode->i_ino);
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_leave(" = 0 [%lu]", d_backing_inode(object->dentry)->i_ino);
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return 0;
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create_error:
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@ -731,10 +731,10 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
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}
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_debug("subdir -> %p %s",
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subdir, subdir->d_inode ? "positive" : "negative");
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subdir, d_backing_inode(subdir) ? "positive" : "negative");
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/* we need to create the subdir if it doesn't exist yet */
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if (!subdir->d_inode) {
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if (d_is_negative(subdir)) {
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ret = cachefiles_has_space(cache, 1, 0);
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if (ret < 0)
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goto mkdir_error;
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@ -750,18 +750,18 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
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if (ret < 0)
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goto mkdir_error;
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ASSERT(subdir->d_inode);
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ASSERT(d_backing_inode(subdir));
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_debug("mkdir -> %p{%p{ino=%lu}}",
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subdir,
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subdir->d_inode,
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subdir->d_inode->i_ino);
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d_backing_inode(subdir),
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d_backing_inode(subdir)->i_ino);
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}
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mutex_unlock(&d_inode(dir)->i_mutex);
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/* we need to make sure the subdir is a directory */
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ASSERT(subdir->d_inode);
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ASSERT(d_backing_inode(subdir));
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if (!d_can_lookup(subdir)) {
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pr_err("%s is not a directory\n", dirname);
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@ -770,18 +770,18 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache,
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}
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ret = -EPERM;
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if (!subdir->d_inode->i_op->setxattr ||
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!subdir->d_inode->i_op->getxattr ||
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!subdir->d_inode->i_op->lookup ||
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!subdir->d_inode->i_op->mkdir ||
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!subdir->d_inode->i_op->create ||
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(!subdir->d_inode->i_op->rename &&
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!subdir->d_inode->i_op->rename2) ||
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!subdir->d_inode->i_op->rmdir ||
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!subdir->d_inode->i_op->unlink)
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if (!d_backing_inode(subdir)->i_op->setxattr ||
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!d_backing_inode(subdir)->i_op->getxattr ||
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!d_backing_inode(subdir)->i_op->lookup ||
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!d_backing_inode(subdir)->i_op->mkdir ||
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!d_backing_inode(subdir)->i_op->create ||
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(!d_backing_inode(subdir)->i_op->rename &&
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!d_backing_inode(subdir)->i_op->rename2) ||
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!d_backing_inode(subdir)->i_op->rmdir ||
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!d_backing_inode(subdir)->i_op->unlink)
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goto check_error;
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_leave(" = [%lu]", subdir->d_inode->i_ino);
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_leave(" = [%lu]", d_backing_inode(subdir)->i_ino);
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return subdir;
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check_error:
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@ -836,12 +836,12 @@ static struct dentry *cachefiles_check_active(struct cachefiles_cache *cache,
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goto lookup_error;
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//_debug("victim -> %p %s",
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// victim, victim->d_inode ? "positive" : "negative");
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// victim, d_backing_inode(victim) ? "positive" : "negative");
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/* if the object is no longer there then we probably retired the object
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* at the netfs's request whilst the cull was in progress
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*/
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if (!victim->d_inode) {
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if (d_is_negative(victim)) {
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mutex_unlock(&d_inode(dir)->i_mutex);
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dput(victim);
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_leave(" = -ENOENT [absent]");
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@ -913,7 +913,7 @@ int cachefiles_cull(struct cachefiles_cache *cache, struct dentry *dir,
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return PTR_ERR(victim);
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_debug("victim -> %p %s",
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victim, victim->d_inode ? "positive" : "negative");
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victim, d_backing_inode(victim) ? "positive" : "negative");
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/* okay... the victim is not being used so we can cull it
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* - start by marking it as stale
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@ -74,12 +74,12 @@ static int cachefiles_read_waiter(wait_queue_t *wait, unsigned mode,
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static int cachefiles_read_reissue(struct cachefiles_object *object,
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struct cachefiles_one_read *monitor)
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{
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struct address_space *bmapping = object->backer->d_inode->i_mapping;
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struct address_space *bmapping = d_backing_inode(object->backer)->i_mapping;
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struct page *backpage = monitor->back_page, *backpage2;
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int ret;
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_enter("{ino=%lx},{%lx,%lx}",
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object->backer->d_inode->i_ino,
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d_backing_inode(object->backer)->i_ino,
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backpage->index, backpage->flags);
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/* skip if the page was truncated away completely */
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@ -157,7 +157,7 @@ static void cachefiles_read_copier(struct fscache_operation *_op)
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object = container_of(op->op.object,
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struct cachefiles_object, fscache);
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_enter("{ino=%lu}", object->backer->d_inode->i_ino);
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_enter("{ino=%lu}", d_backing_inode(object->backer)->i_ino);
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max = 8;
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spin_lock_irq(&object->work_lock);
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@ -247,7 +247,7 @@ static int cachefiles_read_backing_file_one(struct cachefiles_object *object,
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init_waitqueue_func_entry(&monitor->monitor, cachefiles_read_waiter);
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/* attempt to get hold of the backing page */
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bmapping = object->backer->d_inode->i_mapping;
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bmapping = d_backing_inode(object->backer)->i_mapping;
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newpage = NULL;
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for (;;) {
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@ -408,7 +408,7 @@ int cachefiles_read_or_alloc_page(struct fscache_retrieval *op,
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if (!object->backer)
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goto enobufs;
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inode = object->backer->d_inode;
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inode = d_backing_inode(object->backer);
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ASSERT(S_ISREG(inode->i_mode));
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ASSERT(inode->i_mapping->a_ops->bmap);
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ASSERT(inode->i_mapping->a_ops->readpages);
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@ -468,7 +468,7 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object,
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struct list_head *list)
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{
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struct cachefiles_one_read *monitor = NULL;
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struct address_space *bmapping = object->backer->d_inode->i_mapping;
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struct address_space *bmapping = d_backing_inode(object->backer)->i_mapping;
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struct page *newpage = NULL, *netpage, *_n, *backpage = NULL;
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int ret = 0;
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@ -705,7 +705,7 @@ int cachefiles_read_or_alloc_pages(struct fscache_retrieval *op,
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if (cachefiles_has_space(cache, 0, *nr_pages) < 0)
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space = 0;
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inode = object->backer->d_inode;
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inode = d_backing_inode(object->backer);
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ASSERT(S_ISREG(inode->i_mode));
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ASSERT(inode->i_mapping->a_ops->bmap);
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ASSERT(inode->i_mapping->a_ops->readpages);
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@ -55,14 +55,14 @@ static int cachefiles_check_cache_dir(struct cachefiles_cache *cache,
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{
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int ret;
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ret = security_inode_mkdir(root->d_inode, root, 0);
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ret = security_inode_mkdir(d_backing_inode(root), root, 0);
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if (ret < 0) {
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pr_err("Security denies permission to make dirs: error %d",
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ret);
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return ret;
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}
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ret = security_inode_create(root->d_inode, root, 0);
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ret = security_inode_create(d_backing_inode(root), root, 0);
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if (ret < 0)
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pr_err("Security denies permission to create files: error %d",
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ret);
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@ -95,7 +95,7 @@ int cachefiles_determine_cache_security(struct cachefiles_cache *cache,
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/* use the cache root dir's security context as the basis with
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* which create files */
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ret = set_create_files_as(new, root->d_inode);
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ret = set_create_files_as(new, d_backing_inode(root));
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if (ret < 0) {
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abort_creds(new);
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cachefiles_begin_secure(cache, _saved_cred);
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@ -33,7 +33,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object)
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int ret;
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ASSERT(dentry);
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ASSERT(dentry->d_inode);
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ASSERT(d_backing_inode(dentry));
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if (!object->fscache.cookie)
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strcpy(type, "C3");
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@ -52,7 +52,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object)
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if (ret != -EEXIST) {
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pr_err("Can't set xattr on %pd [%lu] (err %d)\n",
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dentry, dentry->d_inode->i_ino,
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dentry, d_backing_inode(dentry)->i_ino,
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-ret);
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goto error;
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}
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@ -64,7 +64,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object)
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goto bad_type_length;
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pr_err("Can't read xattr on %pd [%lu] (err %d)\n",
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dentry, dentry->d_inode->i_ino,
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dentry, d_backing_inode(dentry)->i_ino,
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-ret);
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goto error;
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}
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@ -84,14 +84,14 @@ error:
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bad_type_length:
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pr_err("Cache object %lu type xattr length incorrect\n",
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dentry->d_inode->i_ino);
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d_backing_inode(dentry)->i_ino);
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ret = -EIO;
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goto error;
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bad_type:
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xtype[2] = 0;
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pr_err("Cache object %pd [%lu] type %s not %s\n",
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dentry, dentry->d_inode->i_ino,
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dentry, d_backing_inode(dentry)->i_ino,
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xtype, type);
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ret = -EIO;
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goto error;
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|
@ -165,7 +165,7 @@ int cachefiles_check_auxdata(struct cachefiles_object *object)
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int ret;
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ASSERT(dentry);
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ASSERT(dentry->d_inode);
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ASSERT(d_backing_inode(dentry));
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ASSERT(object->fscache.cookie->def->check_aux);
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auxbuf = kmalloc(sizeof(struct cachefiles_xattr) + 512, GFP_KERNEL);
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@ -204,7 +204,7 @@ int cachefiles_check_object_xattr(struct cachefiles_object *object,
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_enter("%p,#%d", object, auxdata->len);
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ASSERT(dentry);
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ASSERT(dentry->d_inode);
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ASSERT(d_backing_inode(dentry));
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auxbuf = kmalloc(sizeof(struct cachefiles_xattr) + 512, cachefiles_gfp);
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if (!auxbuf) {
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@ -225,7 +225,7 @@ int cachefiles_check_object_xattr(struct cachefiles_object *object,
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cachefiles_io_error_obj(object,
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"Can't read xattr on %lu (err %d)",
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dentry->d_inode->i_ino, -ret);
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d_backing_inode(dentry)->i_ino, -ret);
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goto error;
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}
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|
@ -276,7 +276,7 @@ int cachefiles_check_object_xattr(struct cachefiles_object *object,
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cachefiles_io_error_obj(object,
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"Can't update xattr on %lu"
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" (error %d)",
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dentry->d_inode->i_ino, -ret);
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d_backing_inode(dentry)->i_ino, -ret);
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goto error;
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}
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}
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|
@ -291,7 +291,7 @@ error:
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bad_type_length:
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pr_err("Cache object %lu xattr length incorrect\n",
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dentry->d_inode->i_ino);
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d_backing_inode(dentry)->i_ino);
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ret = -EIO;
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goto error;
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|
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|
@ -316,7 +316,7 @@ int cachefiles_remove_object_xattr(struct cachefiles_cache *cache,
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cachefiles_io_error(cache,
|
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"Can't remove xattr from %lu"
|
||||
" (error %d)",
|
||||
dentry->d_inode->i_ino, -ret);
|
||||
d_backing_inode(dentry)->i_ino, -ret);
|
||||
}
|
||||
|
||||
_leave(" = %d", ret);
|
||||
|
|
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