fs/ext4/ext4_jbd2.h

68 /* We break up a large truncate or write transaction once the handle's
109  * Ext4 handle operation types -- for logging purposes
134 	/* list information for other callbacks attached to the same handle */
146  * @handle: active journal transaction handle to register callback on
154  * after the transaction for which the handle was created has completed.
165 static inline void _ext4_journal_callback_add(handle_t *handle,
169 	list_add_tail(&jce->jce_list, &handle->h_transaction->t_private_list);
172 static inline void ext4_journal_callback_add(handle_t *handle,
179 			EXT4_SB(handle->h_transaction->t_journal->j_private);
184 	_ext4_journal_callback_add(handle, jce);
191  * @handle: active journal transaction handle on which callback was registered
195 static inline bool ext4_journal_callback_try_del(handle_t *handle,
200 			EXT4_SB(handle->h_transaction->t_journal->j_private);
210 ext4_mark_iloc_dirty(handle_t *handle,
219 int ext4_reserve_inode_write(handle_t *handle, struct inode *inode,
224 int __ext4_mark_inode_dirty(handle_t *handle, struct inode *inode,
234 				    handle_t *handle, struct super_block *sb,
238 int __ext4_forget(const char *where, unsigned int line, handle_t *handle,
243 				handle_t *handle, struct super_block *sb,
248 				 handle_t *handle, struct inode *inode,
251 #define ext4_journal_get_write_access(handle, sb, bh, trigger_type) \
252 	__ext4_journal_get_write_access(__func__, __LINE__, (handle), (sb), \
254 #define ext4_forget(handle, is_metadata, inode, bh, block_nr) \
255 	__ext4_forget(__func__, __LINE__, (handle), (is_metadata), (inode), \
257 #define ext4_journal_get_create_access(handle, sb, bh, trigger_type) \
258 	__ext4_journal_get_create_access(__func__, __LINE__, (handle), (sb), \
260 #define ext4_handle_dirty_metadata(handle, inode, bh) \
261 	__ext4_handle_dirty_metadata(__func__, __LINE__, (handle), (inode), \
267 int __ext4_journal_stop(const char *where, unsigned int line, handle_t *handle);
272  * a properly allocated handle is using a journal or not. */
273 static inline int ext4_handle_valid(handle_t *handle)
275 	if ((unsigned long)handle < EXT4_NOJOURNAL_MAX_REF_COUNT)
280 static inline void ext4_handle_sync(handle_t *handle)
282 	if (ext4_handle_valid(handle))
283 		handle->h_sync = 1;
286 static inline int ext4_handle_is_aborted(handle_t *handle)
288 	if (ext4_handle_valid(handle))
289 		return is_handle_aborted(handle);
330 #define ext4_journal_stop(handle) \
331 	__ext4_journal_stop(__func__, __LINE__, (handle))
333 #define ext4_journal_start_reserved(handle, type) \
334 	__ext4_journal_start_reserved((handle), __LINE__, (type))
336 handle_t *__ext4_journal_start_reserved(handle_t *handle, unsigned int line,
344 static inline int ext4_journal_extend(handle_t *handle, int nblocks, int revoke)
346 	if (ext4_handle_valid(handle))
347 		return jbd2_journal_extend(handle, nblocks, revoke);
351 static inline int ext4_journal_restart(handle_t *handle, int nblocks,
354 	if (ext4_handle_valid(handle))
355 		return jbd2__journal_restart(handle, nblocks, revoke, GFP_NOFS);
359 int __ext4_journal_ensure_credits(handle_t *handle, int check_cred,
364  * Ensure @handle has at least @check_creds credits available. If not,
369  * The return value is < 0 in case of error, 0 in case the handle has enough
373 #define ext4_journal_ensure_credits_fn(handle, check_cred, extend_cred,	\
377 	int err = __ext4_journal_ensure_credits((handle), (check_cred),	\
385 	err = ext4_journal_restart((handle), (extend_cred), (revoke_cred)); \
393  * Ensure given handle has at least requested amount of credits available,
399 static inline int ext4_journal_ensure_credits(handle_t *handle, int credits,
402 	return ext4_journal_ensure_credits_fn(handle, credits, credits,
420 static inline int ext4_jbd2_inode_add_write(handle_t *handle,
423 	if (ext4_handle_valid(handle))
424 		return jbd2_journal_inode_ranged_write(handle,
429 static inline int ext4_jbd2_inode_add_wait(handle_t *handle,
432 	if (ext4_handle_valid(handle))
433 		return jbd2_journal_inode_ranged_wait(handle,
438 static inline void ext4_update_inode_fsync_trans(handle_t *handle,
444 	if (ext4_handle_valid(handle) && !is_handle_aborted(handle)) {
445 		ei->i_sync_tid = handle->h_transaction->t_tid;
447 			ei->i_datasync_tid = handle->h_transaction->t_tid;