fs/ext4/ext4_jbd2.h

19 #define EXT4_JOURNAL(inode)	(EXT4_SB((inode)->i_sb)->s_journal)
24  * We may have to touch one inode, one bitmap buffer, up to three
30  * summaries), root which is stored in the inode, sb
37  * two bitmap buffers, and two group summaries, in addition to the inode
55  * This include super block, inode block, quota blocks and xattr blocks
71  * inode, bitmap, superblock, group and indirection updates for at least
91  * but inode, sb and group updates are done only once */
211 		     struct inode *inode,
219 int ext4_reserve_inode_write(handle_t *handle, struct inode *inode,
224 int __ext4_mark_inode_dirty(handle_t *handle, struct inode *inode,
227 int ext4_expand_extra_isize(struct inode *inode,
239 		  int is_metadata, struct inode *inode,
248 				 handle_t *handle, struct inode *inode,
254 #define ext4_forget(handle, is_metadata, inode, bh, block_nr) \
255 	__ext4_forget(__func__, __LINE__, (handle), (is_metadata), (inode), \
260 #define ext4_handle_dirty_metadata(handle, inode, bh) \
261 	__ext4_handle_dirty_metadata(__func__, __LINE__, (handle), (inode), \
264 handle_t *__ext4_journal_start_sb(struct inode *inode, struct super_block *sb,
309 #define ext4_journal_start(inode, type, nblocks)			\
310 	__ext4_journal_start((inode), __LINE__, (type), (nblocks), 0,	\
311 			     ext4_trans_default_revoke_credits((inode)->i_sb))
313 #define ext4_journal_start_with_reserve(inode, type, blocks, rsv_blocks)\
314 	__ext4_journal_start((inode), __LINE__, (type), (blocks), (rsv_blocks),\
315 			     ext4_trans_default_revoke_credits((inode)->i_sb))
317 #define ext4_journal_start_with_revoke(inode, type, blocks, revoke_creds) \
318 	__ext4_journal_start((inode), __LINE__, (type), (blocks), 0,	\
321 static inline handle_t *__ext4_journal_start(struct inode *inode,
326 	return __ext4_journal_start_sb(inode, inode->i_sb, line, type, blocks,
406 static inline int ext4_journal_blocks_per_page(struct inode *inode)
408 	if (EXT4_JOURNAL(inode) != NULL)
409 		return jbd2_journal_blocks_per_page(inode);
421 		struct inode *inode, loff_t start_byte, loff_t length)
425 				EXT4_I(inode)->jinode, start_byte, length);
430 		struct inode *inode, loff_t start_byte, loff_t length)
434 				EXT4_I(inode)->jinode, start_byte, length);
439 						 struct inode *inode,
442 	struct ext4_inode_info *ei = EXT4_I(inode);
455  * Ext4 inode journal modes
461 int ext4_inode_journal_mode(struct inode *inode);
463 static inline int ext4_should_journal_data(struct inode *inode)
465 	return ext4_inode_journal_mode(inode) & EXT4_INODE_JOURNAL_DATA_MODE;
468 static inline int ext4_should_order_data(struct inode *inode)
470 	return ext4_inode_journal_mode(inode) & EXT4_INODE_ORDERED_DATA_MODE;
473 static inline int ext4_should_writeback_data(struct inode *inode)
475 	return ext4_inode_journal_mode(inode) & EXT4_INODE_WRITEBACK_DATA_MODE;
478 static inline int ext4_free_data_revoke_credits(struct inode *inode, int blocks)
480 	if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
482 	if (!ext4_should_journal_data(inode))
488 	return blocks + 2*(EXT4_SB(inode->i_sb)->s_cluster_ratio - 1);
500 static inline int ext4_should_dioread_nolock(struct inode *inode)
502 	if (!test_opt(inode->i_sb, DIOREAD_NOLOCK))
504 	if (!S_ISREG(inode->i_mode))
506 	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
508 	if (ext4_should_journal_data(inode))
511 	if (!test_opt(inode->i_sb, DELALLOC))