1 // SPDX-License-Identifier: GPL-2.0-only
55 	const struct ceph_fsid *fsid = &fsc->client->fsid;  in ceph_fscache_register_fs()
56 	const char *fscache_uniq = fsc->mount_options->fscache_uniq;  in ceph_fscache_register_fs()
63 		if (memcmp(&ent->fsid, fsid, sizeof(*fsid)))  in ceph_fscache_register_fs()
65 		if (ent->uniq_len != uniq_len)  in ceph_fscache_register_fs()
67 		if (uniq_len && memcmp(ent->uniquifier, fscache_uniq, uniq_len))  in ceph_fscache_register_fs()
72 		err = -EBUSY;  in ceph_fscache_register_fs()
78 		err = -ENOMEM;  in ceph_fscache_register_fs()
82 	memcpy(&ent->fsid, fsid, sizeof(*fsid));  in ceph_fscache_register_fs()
84 		memcpy(&ent->uniquifier, fscache_uniq, uniq_len);  in ceph_fscache_register_fs()
85 		ent->uniq_len = uniq_len;  in ceph_fscache_register_fs()
88 	fsc->fscache = fscache_acquire_cookie(ceph_cache_netfs.primary_index,  in ceph_fscache_register_fs()
90 					      &ent->fsid, sizeof(ent->fsid) + uniq_len,  in ceph_fscache_register_fs()
94 	if (fsc->fscache) {  in ceph_fscache_register_fs()
95 		ent->fscache = fsc->fscache;  in ceph_fscache_register_fs()
96 		list_add_tail(&ent->list, &ceph_fscache_list);  in ceph_fscache_register_fs()
114 	struct inode* inode = &ci->vfs_inode;  in ceph_fscache_inode_check_aux()
121 	aux.version = ci->i_version;  in ceph_fscache_inode_check_aux()
122 	aux.mtime_sec = inode->i_mtime.tv_sec;  in ceph_fscache_inode_check_aux()
123 	aux.mtime_nsec = inode->i_mtime.tv_nsec;  in ceph_fscache_inode_check_aux()
128 	dout("ceph inode 0x%p cached okay\n", ci);  in ceph_fscache_inode_check_aux()
145 	if (!fsc->fscache)  in ceph_fscache_register_inode_cookie()
149 	if (!S_ISREG(inode->i_mode))  in ceph_fscache_register_inode_cookie()
153 	if (!ci->fscache) {  in ceph_fscache_register_inode_cookie()
155 		aux.version = ci->i_version;  in ceph_fscache_register_inode_cookie()
156 		aux.mtime_sec = inode->i_mtime.tv_sec;  in ceph_fscache_register_inode_cookie()
157 		aux.mtime_nsec = inode->i_mtime.tv_nsec;  in ceph_fscache_register_inode_cookie()
158 		ci->fscache = fscache_acquire_cookie(fsc->fscache,  in ceph_fscache_register_inode_cookie()
160 						     &ci->i_vino, sizeof(ci->i_vino),  in ceph_fscache_register_inode_cookie()
171 	if ((cookie = ci->fscache) == NULL)  in ceph_fscache_unregister_inode_cookie()
174 	ci->fscache = NULL;  in ceph_fscache_unregister_inode_cookie()
176 	fscache_uncache_all_inode_pages(cookie, &ci->vfs_inode);  in ceph_fscache_unregister_inode_cookie()
177 	fscache_relinquish_cookie(cookie, &ci->i_vino, false);  in ceph_fscache_unregister_inode_cookie()
190 	if (!fscache_cookie_valid(ci->fscache))  in ceph_fscache_file_set_cookie()
194 		dout("fscache_file_set_cookie %p %p disabling cache\n",  in ceph_fscache_file_set_cookie()
196 		fscache_disable_cookie(ci->fscache, &ci->i_vino, false);  in ceph_fscache_file_set_cookie()
197 		fscache_uncache_all_inode_pages(ci->fscache, inode);  in ceph_fscache_file_set_cookie()
199 		fscache_enable_cookie(ci->fscache, &ci->i_vino, i_size_read(inode),  in ceph_fscache_file_set_cookie()
201 		if (fscache_cookie_enabled(ci->fscache)) {  in ceph_fscache_file_set_cookie()
202 			dout("fscache_file_set_cookie %p %p enabling cache\n",  in ceph_fscache_file_set_cookie()
218 	return ci->i_fscache_gen == ci->i_rdcache_gen;  in cache_valid()
233 		return -ENOBUFS;  in ceph_readpage_from_fscache()
235 	ret = fscache_read_or_alloc_page(ci->fscache, page,  in ceph_readpage_from_fscache()
241 			dout("page read submitted\n");  in ceph_readpage_from_fscache()
243 		case -ENOBUFS: /* Pages were not found, and can't be */  in ceph_readpage_from_fscache()
244 		case -ENODATA: /* Pages were not found */  in ceph_readpage_from_fscache()
245 			dout("page/inode not in cache\n");  in ceph_readpage_from_fscache()
247 		default:  in ceph_readpage_from_fscache()
248 			dout("%s: unknown error ret = %i\n", __func__, ret);  in ceph_readpage_from_fscache()
262 		return -ENOBUFS;  in ceph_readpages_from_fscache()
264 	ret = fscache_read_or_alloc_pages(ci->fscache, mapping, pages, nr_pages,  in ceph_readpages_from_fscache()
270 			dout("all-page read submitted\n");  in ceph_readpages_from_fscache()
272 		case -ENOBUFS: /* Some pages were not found, and can't be */  in ceph_readpages_from_fscache()
273 		case -ENODATA: /* some pages were not found */  in ceph_readpages_from_fscache()
274 			dout("page/inode not in cache\n");  in ceph_readpages_from_fscache()
276 		default:  in ceph_readpages_from_fscache()
277 			dout("%s: unknown error ret = %i\n", __func__, ret);  in ceph_readpages_from_fscache()
293 	ret = fscache_write_page(ci->fscache, page, i_size_read(inode),  in ceph_readpage_to_fscache()
296 		 fscache_uncache_page(ci->fscache, page);  in ceph_readpage_to_fscache()
306 	fscache_wait_on_page_write(ci->fscache, page);  in ceph_invalidate_fscache_page()
307 	fscache_uncache_page(ci->fscache, page);  in ceph_invalidate_fscache_page()
312 	if (fscache_cookie_valid(fsc->fscache)) {  in ceph_fscache_unregister_fs()
318 			if (ent->fscache == fsc->fscache) {  in ceph_fscache_unregister_fs()
319 				list_del(&ent->list);  in ceph_fscache_unregister_fs()
328 		__fscache_relinquish_cookie(fsc->fscache, NULL, false);  in ceph_fscache_unregister_fs()
330 	fsc->fscache = NULL;  in ceph_fscache_unregister_fs()
343 	mutex_lock(&ci->i_truncate_mutex);  in ceph_fscache_revalidate_cookie()
345 		if (fscache_check_consistency(ci->fscache, &ci->i_vino))  in ceph_fscache_revalidate_cookie()
346 			fscache_invalidate(ci->fscache);  in ceph_fscache_revalidate_cookie()
347 		spin_lock(&ci->i_ceph_lock);  in ceph_fscache_revalidate_cookie()
348 		ci->i_fscache_gen = ci->i_rdcache_gen;  in ceph_fscache_revalidate_cookie()
349 		spin_unlock(&ci->i_ceph_lock);  in ceph_fscache_revalidate_cookie()
351 	mutex_unlock(&ci->i_truncate_mutex);  in ceph_fscache_revalidate_cookie()