38 static int ext4_release_file(struct inode *inode, struct file *filp)  in ext4_release_file()  argument
40 	if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) {  in ext4_release_file()
41 		ext4_alloc_da_blocks(inode);  in ext4_release_file()
42 		ext4_clear_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE);  in ext4_release_file()
46 			(atomic_read(&inode->i_writecount) == 1) &&  in ext4_release_file()
47 		        !EXT4_I(inode)->i_reserved_data_blocks)  in ext4_release_file()
49 		down_write(&EXT4_I(inode)->i_data_sem);  in ext4_release_file()
50 		ext4_discard_preallocations(inode);  in ext4_release_file()
51 		up_write(&EXT4_I(inode)->i_data_sem);  in ext4_release_file()
53 	if (is_dx(inode) && filp->private_data)  in ext4_release_file()
59 static void ext4_unwritten_wait(struct inode *inode)  in ext4_unwritten_wait()  argument
61 	wait_queue_head_t *wq = ext4_ioend_wq(inode);  in ext4_unwritten_wait()
63 	wait_event(*wq, (atomic_read(&EXT4_I(inode)->i_unwritten) == 0));  in ext4_unwritten_wait()
76 ext4_unaligned_aio(struct inode *inode, struct iov_iter *from, loff_t pos)  in ext4_unaligned_aio()  argument
78 	struct super_block *sb = inode->i_sb;  in ext4_unaligned_aio()
81 	if (pos >= i_size_read(inode))  in ext4_unaligned_aio()
94 	struct inode *inode = file_inode(iocb->ki_filp);  in ext4_file_write_iter()  local
106 	    ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS) &&  in ext4_file_write_iter()
109 	     ext4_unaligned_aio(inode, from, iocb->ki_pos))) {  in ext4_file_write_iter()
110 		aio_mutex = ext4_aio_mutex(inode);  in ext4_file_write_iter()
112 		ext4_unwritten_wait(inode);  in ext4_file_write_iter()
115 	mutex_lock(&inode->i_mutex);  in ext4_file_write_iter()
124 	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) {  in ext4_file_write_iter()
125 		struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);  in ext4_file_write_iter()
141 		if (ext4_should_dioread_nolock(inode) && !aio_mutex &&  in ext4_file_write_iter()
142 		    !file->f_mapping->nrpages && pos + length <= i_size_read(inode)) {  in ext4_file_write_iter()
144 			unsigned int blkbits = inode->i_blkbits;  in ext4_file_write_iter()
152 			err = ext4_map_blocks(NULL, inode, &map, 0);  in ext4_file_write_iter()
171 	mutex_unlock(&inode->i_mutex);  in ext4_file_write_iter()
188 	mutex_unlock(&inode->i_mutex);  in ext4_file_write_iter()
197 	struct inode *inode = bh->b_assoc_map->host;  in ext4_end_io_unwritten()  local
199 	loff_t offset = (loff_t)(uintptr_t)bh->b_private << inode->i_blkbits;  in ext4_end_io_unwritten()
204 	err = ext4_convert_unwritten_extents(NULL, inode, offset, bh->b_size);  in ext4_end_io_unwritten()
235 	struct inode *inode = file->f_mapping->host;  in ext4_file_mmap()  local
237 	if (ext4_encrypted_inode(inode)) {  in ext4_file_mmap()
238 		int err = ext4_generate_encryption_key(inode);  in ext4_file_mmap()
252 static int ext4_file_open(struct inode * inode, struct file * filp)  in ext4_file_open()  argument
254 	struct super_block *sb = inode->i_sb;  in ext4_file_open()
255 	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);  in ext4_file_open()
298 		ret = ext4_inode_attach_jinode(inode);  in ext4_file_open()
302 	ret = dquot_file_open(inode, filp);  in ext4_file_open()
303 	if (!ret && ext4_encrypted_inode(inode)) {  in ext4_file_open()
304 		ret = ext4_generate_encryption_key(inode);  in ext4_file_open()
327 static int ext4_find_unwritten_pgoff(struct inode *inode,  in ext4_find_unwritten_pgoff()  argument
341 	blkbits = inode->i_sb->s_blocksize_bits;  in ext4_find_unwritten_pgoff()
355 		nr_pages = pagevec_lookup(&pvec, inode->i_mapping, index,  in ext4_find_unwritten_pgoff()
400 			if (unlikely(page->mapping != inode->i_mapping)) {  in ext4_find_unwritten_pgoff()
461 	struct inode *inode = file->f_mapping->host;  in ext4_seek_data()  local
469 	mutex_lock(&inode->i_mutex);  in ext4_seek_data()
471 	isize = i_size_read(inode);  in ext4_seek_data()
473 		mutex_unlock(&inode->i_mutex);  in ext4_seek_data()
477 	blkbits = inode->i_sb->s_blocksize_bits;  in ext4_seek_data()
486 		ret = ext4_map_blocks(NULL, inode, &map, 0);  in ext4_seek_data()
497 		ext4_es_find_delayed_extent_range(inode, last, last, &es);  in ext4_seek_data()
511 			unwritten = ext4_find_unwritten_pgoff(inode, SEEK_DATA,  in ext4_seek_data()
521 	mutex_unlock(&inode->i_mutex);  in ext4_seek_data()
534 	struct inode *inode = file->f_mapping->host;  in ext4_seek_hole()  local
542 	mutex_lock(&inode->i_mutex);  in ext4_seek_hole()
544 	isize = i_size_read(inode);  in ext4_seek_hole()
546 		mutex_unlock(&inode->i_mutex);  in ext4_seek_hole()
550 	blkbits = inode->i_sb->s_blocksize_bits;  in ext4_seek_hole()
559 		ret = ext4_map_blocks(NULL, inode, &map, 0);  in ext4_seek_hole()
570 		ext4_es_find_delayed_extent_range(inode, last, last, &es);  in ext4_seek_hole()
584 			unwritten = ext4_find_unwritten_pgoff(inode, SEEK_HOLE,  in ext4_seek_hole()
597 	mutex_unlock(&inode->i_mutex);  in ext4_seek_hole()
612 	struct inode *inode = file->f_mapping->host;  in ext4_llseek()  local
615 	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))  in ext4_llseek()
616 		maxbytes = EXT4_SB(inode->i_sb)->s_bitmap_maxbytes;  in ext4_llseek()
618 		maxbytes = inode->i_sb->s_maxbytes;  in ext4_llseek()
625 						maxbytes, i_size_read(inode));  in ext4_llseek()