fs/ext4/move_extent.c

67  * @donor_inode:	donor inode structure to be released its lock second
72 			      struct inode *donor_inode)
75 	up_write(&EXT4_I(donor_inode)->i_data_sem);
237  * @donor_inode:		donor inode
251 move_extent_per_page(struct file *o_filp, struct inode *donor_inode,
271 	 * inode and donor_inode may change each different metadata blocks.
307 	*err = mext_folio_double_lock(orig_inode, donor_inode, orig_page_offset,
324 		ext4_double_down_write_data_sem(orig_inode, donor_inode);
332 		unwritten &= mext_check_coverage(donor_inode, donor_blk_offset,
338 			ext4_double_up_write_data_sem(orig_inode, donor_inode);
347 						   donor_inode, orig_blk_offset,
351 		ext4_double_up_write_data_sem(orig_inode, donor_inode);
366 	ext4_double_down_write_data_sem(orig_inode, donor_inode);
367 	replaced_count = ext4_swap_extents(handle, orig_inode, donor_inode,
370 	ext4_double_up_write_data_sem(orig_inode, donor_inode);
424 	ext4_double_down_write_data_sem(orig_inode, donor_inode);
425 	replaced_count = ext4_swap_extents(handle, donor_inode, orig_inode,
428 	ext4_double_up_write_data_sem(orig_inode, donor_inode);
443  * @donor_inode:	donor inode
454 		     struct inode *donor_inode, __u64 orig_start,
462 	donor_eof = (i_size_read(donor_inode) + blocksize - 1) >> blkbits;
465 	if (donor_inode->i_mode & (S_ISUID|S_ISGID)) {
468 			   orig_inode->i_ino, donor_inode->i_ino);
472 	if (IS_IMMUTABLE(donor_inode) || IS_APPEND(donor_inode))
476 	if (IS_SWAPFILE(orig_inode) || IS_SWAPFILE(donor_inode)) {
478 			orig_inode->i_ino, donor_inode->i_ino);
482 	if (ext4_is_quota_file(orig_inode) && ext4_is_quota_file(donor_inode)) {
484 			orig_inode->i_ino, donor_inode->i_ino);
493 	} else if (!(ext4_test_inode_flag(donor_inode, EXT4_INODE_EXTENTS))) {
495 			"based file [ino:donor %lu]\n", donor_inode->i_ino);
499 	if ((!orig_inode->i_size) || (!donor_inode->i_size)) {
509 			orig_inode->i_ino, donor_inode->i_ino);
520 			orig_inode->i_ino, donor_inode->i_ino);
534 			donor_inode->i_ino);
560 	struct inode *donor_inode = file_inode(d_filp);
567 	if (orig_inode->i_sb != donor_inode->i_sb) {
570 			orig_inode->i_ino, donor_inode->i_ino);
575 	if (orig_inode == donor_inode) {
578 			orig_inode->i_ino, donor_inode->i_ino);
583 	if (!S_ISREG(orig_inode->i_mode) || !S_ISREG(donor_inode->i_mode)) {
586 			orig_inode->i_ino, donor_inode->i_ino);
593 	    ext4_should_journal_data(donor_inode)) {
599 	if (IS_ENCRYPTED(orig_inode) || IS_ENCRYPTED(donor_inode)) {
606 	lock_two_nondirectories(orig_inode, donor_inode);
610 	inode_dio_wait(donor_inode);
613 	ext4_double_down_write_data_sem(orig_inode, donor_inode);
615 	ret = mext_check_arguments(orig_inode, donor_inode, orig_blk,
663 					       donor_inode->i_blkbits);
674 		ext4_double_up_write_data_sem(orig_inode, donor_inode);
676 		*moved_len += move_extent_per_page(o_filp, donor_inode,
680 		ext4_double_down_write_data_sem(orig_inode, donor_inode);
690 		ext4_discard_preallocations(donor_inode);
694 	ext4_double_up_write_data_sem(orig_inode, donor_inode);
695 	unlock_two_nondirectories(orig_inode, donor_inode);