27 static int zonefs_read_iomap_begin(struct inode *inode, loff_t offset,  in zonefs_read_iomap_begin()  argument
31 	struct zonefs_inode_info *zi = ZONEFS_I(inode);  in zonefs_read_iomap_begin()
32 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_read_iomap_begin()
33 	struct super_block *sb = inode->i_sb;  in zonefs_read_iomap_begin()
41 	iomap->bdev = inode->i_sb->s_bdev;  in zonefs_read_iomap_begin()
43 	isize = i_size_read(inode);  in zonefs_read_iomap_begin()
55 	trace_zonefs_iomap_begin(inode, iomap);  in zonefs_read_iomap_begin()
64 static int zonefs_write_iomap_begin(struct inode *inode, loff_t offset,  in zonefs_write_iomap_begin()  argument
68 	struct zonefs_inode_info *zi = ZONEFS_I(inode);  in zonefs_write_iomap_begin()
69 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_write_iomap_begin()
70 	struct super_block *sb = inode->i_sb;  in zonefs_write_iomap_begin()
91 	iomap->bdev = inode->i_sb->s_bdev;  in zonefs_write_iomap_begin()
94 	isize = i_size_read(inode);  in zonefs_write_iomap_begin()
104 	trace_zonefs_iomap_begin(inode, iomap);  in zonefs_write_iomap_begin()
131 	struct zonefs_zone *z = zonefs_inode_zone(wpc->inode);  in zonefs_writeback_range()
135 	if (WARN_ON_ONCE(offset >= i_size_read(wpc->inode)))  in zonefs_writeback_range()
143 		error = zonefs_write_iomap_begin(wpc->inode, offset,  in zonefs_writeback_range()
162 		.inode		= mapping->host,  in zonefs_writepages()
173 	struct inode *inode = file_inode(swap_file);  in zonefs_swap_activate()  local
175 	if (zonefs_inode_is_seq(inode)) {  in zonefs_swap_activate()
176 		zonefs_err(inode->i_sb,  in zonefs_swap_activate()
198 int zonefs_file_truncate(struct inode *inode, loff_t isize)  in zonefs_file_truncate()  argument
200 	struct zonefs_inode_info *zi = ZONEFS_I(inode);  in zonefs_file_truncate()
201 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_file_truncate()
221 	inode_dio_wait(inode);  in zonefs_file_truncate()
224 	filemap_invalidate_lock(inode->i_mapping);  in zonefs_file_truncate()
229 	old_isize = i_size_read(inode);  in zonefs_file_truncate()
233 	ret = zonefs_inode_zone_mgmt(inode, op);  in zonefs_file_truncate()
251 			ret = zonefs_inode_zone_mgmt(inode, REQ_OP_ZONE_OPEN);  in zonefs_file_truncate()
256 	zonefs_update_stats(inode, isize);  in zonefs_file_truncate()
257 	truncate_setsize(inode, isize);  in zonefs_file_truncate()
259 	zonefs_inode_account_active(inode);  in zonefs_file_truncate()
263 	filemap_invalidate_unlock(inode->i_mapping);  in zonefs_file_truncate()
271 	struct inode *inode = file_inode(file);  in zonefs_file_fsync()  local
274 	if (unlikely(IS_IMMUTABLE(inode)))  in zonefs_file_fsync()
281 	if (zonefs_inode_is_cnv(inode))  in zonefs_file_fsync()
284 		ret = blkdev_issue_flush(inode->i_sb->s_bdev);  in zonefs_file_fsync()
287 		zonefs_io_error(inode, true);  in zonefs_file_fsync()
294 	struct inode *inode = file_inode(vmf->vma->vm_file);  in zonefs_filemap_page_mkwrite()  local
297 	if (unlikely(IS_IMMUTABLE(inode)))  in zonefs_filemap_page_mkwrite()
304 	if (zonefs_inode_is_seq(inode))  in zonefs_filemap_page_mkwrite()
307 	sb_start_pagefault(inode->i_sb);  in zonefs_filemap_page_mkwrite()
311 	filemap_invalidate_lock_shared(inode->i_mapping);  in zonefs_filemap_page_mkwrite()
313 	filemap_invalidate_unlock_shared(inode->i_mapping);  in zonefs_filemap_page_mkwrite()
315 	sb_end_pagefault(inode->i_sb);  in zonefs_filemap_page_mkwrite()
361 	struct inode *inode = file_inode(iocb->ki_filp);  in zonefs_file_write_dio_end_io()  local
362 	struct zonefs_inode_info *zi = ZONEFS_I(inode);  in zonefs_file_write_dio_end_io()
370 			zonefs_io_error(inode, true);  in zonefs_file_write_dio_end_io()
374 	if (size && zonefs_inode_is_seq(inode)) {  in zonefs_file_write_dio_end_io()
383 		if (i_size_read(inode) < iocb->ki_pos + size) {  in zonefs_file_write_dio_end_io()
384 			zonefs_update_stats(inode, iocb->ki_pos + size);  in zonefs_file_write_dio_end_io()
385 			zonefs_i_size_write(inode, iocb->ki_pos + size);  in zonefs_file_write_dio_end_io()
404 	struct inode *inode = file_inode(file);  in zonefs_write_check_limits()  local
405 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_write_check_limits()
429 	struct inode *inode = file_inode(file);  in zonefs_write_checks()  local
430 	struct zonefs_inode_info *zi = ZONEFS_I(inode);  in zonefs_write_checks()
431 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_write_checks()
434 	if (IS_SWAPFILE(inode))  in zonefs_write_checks()
472 	struct inode *inode = file_inode(iocb->ki_filp);  in zonefs_file_dio_write()  local
473 	struct zonefs_inode_info *zi = ZONEFS_I(inode);  in zonefs_file_dio_write()
474 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_file_dio_write()
475 	struct super_block *sb = inode->i_sb;  in zonefs_file_dio_write()
488 		if (!inode_trylock(inode))  in zonefs_file_dio_write()
491 		inode_lock(inode);  in zonefs_file_dio_write()
520 		zonefs_inode_account_active(inode);  in zonefs_file_dio_write()
546 			zonefs_io_error(inode, true);  in zonefs_file_dio_write()
550 	inode_unlock(inode);  in zonefs_file_dio_write()
558 	struct inode *inode = file_inode(iocb->ki_filp);  in zonefs_file_buffered_write()  local
565 	if (zonefs_inode_is_seq(inode))  in zonefs_file_buffered_write()
569 		if (!inode_trylock(inode))  in zonefs_file_buffered_write()
572 		inode_lock(inode);  in zonefs_file_buffered_write()
582 		zonefs_io_error(inode, true);  in zonefs_file_buffered_write()
585 	inode_unlock(inode);  in zonefs_file_buffered_write()
594 	struct inode *inode = file_inode(iocb->ki_filp);  in zonefs_file_write_iter()  local
595 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_file_write_iter()
597 	if (unlikely(IS_IMMUTABLE(inode)))  in zonefs_file_write_iter()
600 	if (sb_rdonly(inode->i_sb))  in zonefs_file_write_iter()
634 	struct inode *inode = file_inode(iocb->ki_filp);  in zonefs_file_read_iter()  local
635 	struct zonefs_inode_info *zi = ZONEFS_I(inode);  in zonefs_file_read_iter()
636 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_file_read_iter()
637 	struct super_block *sb = inode->i_sb;  in zonefs_file_read_iter()
642 	if (unlikely(IS_IMMUTABLE(inode) && !(inode->i_mode & 0777)))  in zonefs_file_read_iter()
649 		if (!inode_trylock_shared(inode))  in zonefs_file_read_iter()
652 		inode_lock_shared(inode);  in zonefs_file_read_iter()
657 	isize = i_size_read(inode);  in zonefs_file_read_iter()
679 			zonefs_io_error(inode, false);  in zonefs_file_read_iter()
683 	inode_unlock_shared(inode);  in zonefs_file_read_iter()
692 	struct inode *inode = file_inode(in);  in zonefs_file_splice_read()  local
693 	struct zonefs_inode_info *zi = ZONEFS_I(inode);  in zonefs_file_splice_read()
694 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_file_splice_read()
699 	if (unlikely(IS_IMMUTABLE(inode) && !(inode->i_mode & 0777)))  in zonefs_file_splice_read()
705 	inode_lock_shared(inode);  in zonefs_file_splice_read()
709 	isize = i_size_read(inode);  in zonefs_file_splice_read()
719 			zonefs_io_error(inode, false);  in zonefs_file_splice_read()
722 	inode_unlock_shared(inode);  in zonefs_file_splice_read()
729 static inline bool zonefs_seq_file_need_wro(struct inode *inode,  in zonefs_seq_file_need_wro()  argument
732 	if (zonefs_inode_is_cnv(inode))  in zonefs_seq_file_need_wro()
741 static int zonefs_seq_file_write_open(struct inode *inode)  in zonefs_seq_file_write_open()  argument
743 	struct zonefs_inode_info *zi = ZONEFS_I(inode);  in zonefs_seq_file_write_open()
744 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_seq_file_write_open()
750 		struct zonefs_sb_info *sbi = ZONEFS_SB(inode->i_sb);  in zonefs_seq_file_write_open()
762 			if (i_size_read(inode) < z->z_capacity) {  in zonefs_seq_file_write_open()
763 				ret = zonefs_inode_zone_mgmt(inode,  in zonefs_seq_file_write_open()
770 				zonefs_inode_account_active(inode);  in zonefs_seq_file_write_open()
783 static int zonefs_file_open(struct inode *inode, struct file *file)  in zonefs_file_open()  argument
788 	ret = generic_file_open(inode, file);  in zonefs_file_open()
792 	if (zonefs_seq_file_need_wro(inode, file))  in zonefs_file_open()
793 		return zonefs_seq_file_write_open(inode);  in zonefs_file_open()
798 static void zonefs_seq_file_write_close(struct inode *inode)  in zonefs_seq_file_write_close()  argument
800 	struct zonefs_inode_info *zi = ZONEFS_I(inode);  in zonefs_seq_file_write_close()
801 	struct zonefs_zone *z = zonefs_inode_zone(inode);  in zonefs_seq_file_write_close()
802 	struct super_block *sb = inode->i_sb;  in zonefs_seq_file_write_close()
818 		ret = zonefs_inode_zone_mgmt(inode, REQ_OP_ZONE_CLOSE);  in zonefs_seq_file_write_close()
820 			__zonefs_io_error(inode, false);  in zonefs_seq_file_write_close()
840 		zonefs_inode_account_active(inode);  in zonefs_seq_file_write_close()
849 static int zonefs_file_release(struct inode *inode, struct file *file)  in zonefs_file_release()  argument
857 	if (zonefs_seq_file_need_wro(inode, file))  in zonefs_file_release()
858 		zonefs_seq_file_write_close(inode);  in zonefs_file_release()