fs/nfs/inode.c

157 	struct nfs_inode *nfsi = NFS_I(inode);
159 	return !time_in_range_open(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
179 static bool nfs_has_xattr_cache(const struct nfs_inode *nfsi)
181 	return nfsi->xattr_cache != NULL;
184 static bool nfs_has_xattr_cache(const struct nfs_inode *nfsi)
192 	struct nfs_inode *nfsi = NFS_I(inode);
203 	if (!nfs_has_xattr_cache(nfsi))
209 	nfsi->cache_validity |= flags;
212 		nfsi->cache_validity &= ~NFS_INO_INVALID_DATA;
213 		nfs_ooo_clear(nfsi);
214 	} else if (nfsi->cache_validity & NFS_INO_INVALID_DATA) {
215 		nfs_ooo_clear(nfsi);
226 	struct nfs_inode *nfsi = NFS_I(inode);
231 	nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
232 	nfsi->attrtimeo_timestamp = jiffies;
245 	nfs_zap_label_cache_locked(nfsi);
422 static void nfs_inode_init_regular(struct nfs_inode *nfsi)
424 	atomic_long_set(&nfsi->nrequests, 0);
425 	atomic_long_set(&nfsi->redirtied_pages, 0);
426 	INIT_LIST_HEAD(&nfsi->commit_info.list);
427 	atomic_long_set(&nfsi->commit_info.ncommit, 0);
428 	atomic_set(&nfsi->commit_info.rpcs_out, 0);
429 	mutex_init(&nfsi->commit_mutex);
432 static void nfs_inode_init_dir(struct nfs_inode *nfsi)
434 	nfsi->cache_change_attribute = 0;
435 	memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
436 	init_rwsem(&nfsi->rmdir_sem);
472 		struct nfs_inode *nfsi = NFS_I(inode);
482 		nfsi->cache_validity = 0;
493 			nfs_inode_init_regular(nfsi);
498 			nfs_inode_init_dir(nfsi);
524 		nfsi->write_io = 0;
525 		nfsi->read_io = 0;
527 		nfsi->read_cache_jiffies = fattr->time_start;
528 		nfsi->attr_gencount = fattr->gencount;
577 		nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
578 		nfsi->attrtimeo_timestamp = now;
579 		nfsi->access_cache = RB_ROOT;
1007 	struct nfs_inode *nfsi;
1017 	nfsi = NFS_I(inode);
1020 	if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
1022 	if (!list_empty(&nfsi->open_files))
1108 	struct nfs_inode *nfsi = NFS_I(inode);
1111 	if (list_empty(&nfsi->open_files) &&
1112 	    nfs_ooo_test(nfsi))
1115 	list_add_tail_rcu(&ctx->list, &nfsi->open_files);
1134 	struct nfs_inode *nfsi = NFS_I(inode);
1138 	list_for_each_entry_rcu(pos, &nfsi->open_files, list) {
1198 	struct nfs_inode *nfsi = NFS_I(inode);
1252 	if (nfsi->cache_validity & NFS_INO_INVALID_ACL)
1321 	struct nfs_inode *nfsi = NFS_I(inode);
1322 	unsigned long *bitlock = &nfsi->flags;
1348 		if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
1356 	nfsi->cache_validity &= ~NFS_INO_INVALID_DATA;
1357 	nfs_ooo_clear(nfsi);
1378 	struct nfs_inode *nfsi = NFS_I(inode);
1379 	unsigned long *bitlock = &nfsi->flags;
1390 	    (nfsi->cache_validity & NFS_INO_INVALID_DATA))
1417 static bool nfs_file_has_writers(struct nfs_inode *nfsi)
1419 	struct inode *inode = &nfsi->vfs_inode;
1423 	if (list_empty(&nfsi->open_files))
1428 static bool nfs_file_has_buffered_writers(struct nfs_inode *nfsi)
1430 	return nfs_file_has_writers(nfsi) && nfs_file_io_is_buffered(nfsi);
1480 	struct nfs_inode *nfsi = NFS_I(inode);
1493 	} else if (nfsi->fileid != fattr->fileid) {
1496 		    nfsi->fileid == fattr->mounted_on_fileid)
1504 	if (!nfs_file_has_buffered_writers(nfsi)) {
1544 	nfsi->read_cache_jiffies = fattr->time_start;
1819 static void nfs_ooo_merge(struct nfs_inode *nfsi,
1824 	if (nfsi->cache_validity & NFS_INO_DATA_INVAL_DEFER)
1828 	if (!nfsi->ooo) {
1829 		nfsi->ooo = kmalloc(sizeof(*nfsi->ooo), GFP_ATOMIC);
1830 		if (!nfsi->ooo) {
1831 			nfsi->cache_validity |= NFS_INO_DATA_INVAL_DEFER;
1834 		nfsi->ooo->cnt = 0;
1838 	cnt = nfsi->ooo->cnt;
1840 		if (end == nfsi->ooo->gap[i].start)
1841 			end = nfsi->ooo->gap[i].end;
1842 		else if (start == nfsi->ooo->gap[i].end)
1843 			start = nfsi->ooo->gap[i].start;
1848 		nfsi->ooo->gap[i] = nfsi->ooo->gap[cnt];
1852 		if (cnt >= ARRAY_SIZE(nfsi->ooo->gap)) {
1853 			nfsi->cache_validity |= NFS_INO_DATA_INVAL_DEFER;
1854 			kfree(nfsi->ooo);
1855 			nfsi->ooo = NULL;
1858 		nfsi->ooo->gap[cnt].start = start;
1859 		nfsi->ooo->gap[cnt].end = end;
1862 	nfsi->ooo->cnt = cnt;
1865 static void nfs_ooo_record(struct nfs_inode *nfsi,
1874 		nfs_ooo_merge(nfsi,
2061 	struct nfs_inode *nfsi = NFS_I(inode);
2067 	bool have_writers = nfs_file_has_buffered_writers(nfsi);
2082 	} else if (nfsi->fileid != fattr->fileid) {
2085 		    nfsi->fileid == fattr->mounted_on_fileid)
2090 			inode->i_sb->s_id, (long long)nfsi->fileid,
2119 	nfsi->read_cache_jiffies = fattr->time_start;
2121 	save_cache_validity = nfsi->cache_validity;
2122 	nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR
2131 		nfsi->cache_validity |=
2141 		if (!have_writers && nfsi->ooo && nfsi->ooo->cnt == 1 &&
2142 		    nfsi->ooo->gap[0].end == inode_peek_iversion_raw(inode)) {
2146 			inode_set_iversion_raw(inode, nfsi->ooo->gap[0].start);
2147 			kfree(nfsi->ooo);
2148 			nfsi->ooo = NULL;
2172 				nfs_ooo_record(nfsi, fattr);
2173 				nfs_ooo_merge(nfsi, inode_peek_iversion_raw(inode),
2179 		nfsi->cache_validity |=
2182 		    (nfsi->cache_validity & NFS_INO_INVALID_CHANGE) != 0)
2189 		nfsi->cache_validity |=
2195 		nfsi->cache_validity |=
2219 		nfsi->cache_validity |=
2225 		nfsi->cache_validity |=
2237 		nfsi->cache_validity |=
2247 		nfsi->cache_validity |=
2257 		nfsi->cache_validity |=
2264 		nfsi->cache_validity |=
2273 		nfsi->cache_validity |=
2279 		nfsi->cache_validity |=
2285 		nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
2286 		nfsi->attrtimeo_timestamp = now;
2288 		nfsi->attr_gencount = nfs_inc_attr_generation_counter();
2291 			if (!time_in_range_open(now, nfsi->attrtimeo_timestamp,
2292 				nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) {
2293 				nfsi->attrtimeo <<= 1;
2294 				if (nfsi->attrtimeo > NFS_MAXATTRTIMEO(inode))
2295 					nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode);
2297 			nfsi->attrtimeo_timestamp = now;
2300 		if ((long)(fattr->gencount - nfsi->attr_gencount) > 0)
2301 			nfsi->attr_gencount = fattr->gencount;
2323 	struct nfs_inode *nfsi;
2324 	nfsi = alloc_inode_sb(sb, nfs_inode_cachep, GFP_KERNEL);
2325 	if (!nfsi)
2327 	nfsi->flags = 0UL;
2328 	nfsi->cache_validity = 0UL;
2329 	nfsi->ooo = NULL;
2331 	nfsi->nfs4_acl = NULL;
2334 	nfsi->xattr_cache = NULL;
2336 	nfs_netfs_inode_init(nfsi);
2338 	return &nfsi->vfs_inode;
2349 static inline void nfs4_init_once(struct nfs_inode *nfsi)
2352 	INIT_LIST_HEAD(&nfsi->open_states);
2353 	nfsi->delegation = NULL;
2354 	init_rwsem(&nfsi->rwsem);
2355 	nfsi->layout = NULL;
2361 	struct nfs_inode *nfsi = foo;
2363 	inode_init_once(&nfsi->vfs_inode);
2364 	INIT_LIST_HEAD(&nfsi->open_files);
2365 	INIT_LIST_HEAD(&nfsi->access_cache_entry_lru);
2366 	INIT_LIST_HEAD(&nfsi->access_cache_inode_lru);
2367 	nfs4_init_once(nfsi);