39 static int ext4_release_file(struct inode *inode, struct file *filp)  in ext4_release_file()  argument
41 	if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) {  in ext4_release_file()
42 		ext4_alloc_da_blocks(inode);  in ext4_release_file()
43 		ext4_clear_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE);  in ext4_release_file()
47 			(atomic_read(&inode->i_writecount) == 1) &&  in ext4_release_file()
48 		        !EXT4_I(inode)->i_reserved_data_blocks)  in ext4_release_file()
50 		down_write(&EXT4_I(inode)->i_data_sem);  in ext4_release_file()
51 		ext4_discard_preallocations(inode);  in ext4_release_file()
52 		up_write(&EXT4_I(inode)->i_data_sem);  in ext4_release_file()
54 	if (is_dx(inode) && filp->private_data)  in ext4_release_file()
60 static void ext4_unwritten_wait(struct inode *inode)  in ext4_unwritten_wait()  argument
62 	wait_queue_head_t *wq = ext4_ioend_wq(inode);  in ext4_unwritten_wait()
64 	wait_event(*wq, (atomic_read(&EXT4_I(inode)->i_unwritten) == 0));  in ext4_unwritten_wait()
77 ext4_unaligned_aio(struct inode *inode, struct iov_iter *from, loff_t pos)  in ext4_unaligned_aio()  argument
79 	struct super_block *sb = inode->i_sb;  in ext4_unaligned_aio()
82 	if (pos >= i_size_read(inode))  in ext4_unaligned_aio()
95 	struct inode *inode = file_inode(iocb->ki_filp);  in ext4_file_write_iter()  local
107 	    ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS) &&  in ext4_file_write_iter()
110 	     ext4_unaligned_aio(inode, from, iocb->ki_pos))) {  in ext4_file_write_iter()
111 		aio_mutex = ext4_aio_mutex(inode);  in ext4_file_write_iter()
113 		ext4_unwritten_wait(inode);  in ext4_file_write_iter()
116 	mutex_lock(&inode->i_mutex);  in ext4_file_write_iter()
125 	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) {  in ext4_file_write_iter()
126 		struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);  in ext4_file_write_iter()
142 		if (ext4_should_dioread_nolock(inode) && !aio_mutex &&  in ext4_file_write_iter()
143 		    !file->f_mapping->nrpages && pos + length <= i_size_read(inode)) {  in ext4_file_write_iter()
145 			unsigned int blkbits = inode->i_blkbits;  in ext4_file_write_iter()
153 			err = ext4_map_blocks(NULL, inode, &map, 0);  in ext4_file_write_iter()
172 	mutex_unlock(&inode->i_mutex);  in ext4_file_write_iter()
189 	mutex_unlock(&inode->i_mutex);  in ext4_file_write_iter()
198 	struct inode *inode = bh->b_assoc_map->host;  in ext4_end_io_unwritten()  local
200 	loff_t offset = (loff_t)(uintptr_t)bh->b_private << inode->i_blkbits;  in ext4_end_io_unwritten()
205 	err = ext4_convert_unwritten_extents(NULL, inode, offset, bh->b_size);  in ext4_end_io_unwritten()
212 	struct inode *inode = file_inode(vma->vm_file);  in ext4_dax_fault()  local
213 	struct super_block *sb = inode->i_sb;  in ext4_dax_fault()
219 		down_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_fault()
223 		down_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_fault()
234 		up_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_fault()
237 		up_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_fault()
247 	struct inode *inode = file_inode(vma->vm_file);  in ext4_dax_pmd_fault()  local
248 	struct super_block *sb = inode->i_sb;  in ext4_dax_pmd_fault()
254 		down_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_pmd_fault()
256 				ext4_chunk_trans_blocks(inode,  in ext4_dax_pmd_fault()
259 		down_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_pmd_fault()
270 		up_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_pmd_fault()
273 		up_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_pmd_fault()
281 	struct inode *inode = file_inode(vma->vm_file);  in ext4_dax_mkwrite()  local
283 	sb_start_pagefault(inode->i_sb);  in ext4_dax_mkwrite()
285 	down_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_mkwrite()
288 	up_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_mkwrite()
289 	sb_end_pagefault(inode->i_sb);  in ext4_dax_mkwrite()
306 	struct inode *inode = file_inode(vma->vm_file);  in ext4_dax_pfn_mkwrite()  local
307 	struct super_block *sb = inode->i_sb;  in ext4_dax_pfn_mkwrite()
313 	down_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_pfn_mkwrite()
314 	size = (i_size_read(inode) + PAGE_SIZE - 1) >> PAGE_SHIFT;  in ext4_dax_pfn_mkwrite()
317 	up_read(&EXT4_I(inode)->i_mmap_sem);  in ext4_dax_pfn_mkwrite()
341 	struct inode *inode = file->f_mapping->host;  in ext4_file_mmap()  local
343 	if (ext4_encrypted_inode(inode)) {  in ext4_file_mmap()
344 		int err = ext4_get_encryption_info(inode);  in ext4_file_mmap()
347 		if (ext4_encryption_info(inode) == NULL)  in ext4_file_mmap()
360 static int ext4_file_open(struct inode * inode, struct file * filp)  in ext4_file_open()  argument
362 	struct super_block *sb = inode->i_sb;  in ext4_file_open()
363 	struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);  in ext4_file_open()
401 	if (ext4_encrypted_inode(inode)) {  in ext4_file_open()
402 		ret = ext4_get_encryption_info(inode);  in ext4_file_open()
405 		if (ext4_encryption_info(inode) == NULL)  in ext4_file_open()
413 		ret = ext4_inode_attach_jinode(inode);  in ext4_file_open()
417 	return dquot_file_open(inode, filp);  in ext4_file_open()
436 static int ext4_find_unwritten_pgoff(struct inode *inode,  in ext4_find_unwritten_pgoff()  argument
450 	blkbits = inode->i_sb->s_blocksize_bits;  in ext4_find_unwritten_pgoff()
464 		nr_pages = pagevec_lookup(&pvec, inode->i_mapping, index,  in ext4_find_unwritten_pgoff()
509 			if (unlikely(page->mapping != inode->i_mapping)) {  in ext4_find_unwritten_pgoff()
570 	struct inode *inode = file->f_mapping->host;  in ext4_seek_data()  local
578 	mutex_lock(&inode->i_mutex);  in ext4_seek_data()
580 	isize = i_size_read(inode);  in ext4_seek_data()
582 		mutex_unlock(&inode->i_mutex);  in ext4_seek_data()
586 	blkbits = inode->i_sb->s_blocksize_bits;  in ext4_seek_data()
595 		ret = ext4_map_blocks(NULL, inode, &map, 0);  in ext4_seek_data()
606 		ext4_es_find_delayed_extent_range(inode, last, last, &es);  in ext4_seek_data()
620 			unwritten = ext4_find_unwritten_pgoff(inode, SEEK_DATA,  in ext4_seek_data()
630 	mutex_unlock(&inode->i_mutex);  in ext4_seek_data()
643 	struct inode *inode = file->f_mapping->host;  in ext4_seek_hole()  local
651 	mutex_lock(&inode->i_mutex);  in ext4_seek_hole()
653 	isize = i_size_read(inode);  in ext4_seek_hole()
655 		mutex_unlock(&inode->i_mutex);  in ext4_seek_hole()
659 	blkbits = inode->i_sb->s_blocksize_bits;  in ext4_seek_hole()
668 		ret = ext4_map_blocks(NULL, inode, &map, 0);  in ext4_seek_hole()
679 		ext4_es_find_delayed_extent_range(inode, last, last, &es);  in ext4_seek_hole()
693 			unwritten = ext4_find_unwritten_pgoff(inode, SEEK_HOLE,  in ext4_seek_hole()
706 	mutex_unlock(&inode->i_mutex);  in ext4_seek_hole()
721 	struct inode *inode = file->f_mapping->host;  in ext4_llseek()  local
724 	if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))  in ext4_llseek()
725 		maxbytes = EXT4_SB(inode->i_sb)->s_bitmap_maxbytes;  in ext4_llseek()
727 		maxbytes = inode->i_sb->s_maxbytes;  in ext4_llseek()
734 						maxbytes, i_size_read(inode));  in ext4_llseek()