1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *   Copyright (C) International Business Machines Corp., 2000-2004
4  *   Portions Copyright (C) Christoph Hellwig, 2001-2002
31 		return ERR_PTR(-ENOMEM);  in jfs_iget()
32 	if (!(inode->i_state & I_NEW))  in jfs_iget()
41 	if (S_ISREG(inode->i_mode)) {  in jfs_iget()
42 		inode->i_op = &jfs_file_inode_operations;  in jfs_iget()
43 		inode->i_fop = &jfs_file_operations;  in jfs_iget()
44 		inode->i_mapping->a_ops = &jfs_aops;  in jfs_iget()
45 	} else if (S_ISDIR(inode->i_mode)) {  in jfs_iget()
46 		inode->i_op = &jfs_dir_inode_operations;  in jfs_iget()
47 		inode->i_fop = &jfs_dir_operations;  in jfs_iget()
48 	} else if (S_ISLNK(inode->i_mode)) {  in jfs_iget()
49 		if (inode->i_size >= IDATASIZE) {  in jfs_iget()
50 			inode->i_op = &page_symlink_inode_operations;  in jfs_iget()
52 			inode->i_mapping->a_ops = &jfs_aops;  in jfs_iget()
54 			inode->i_op = &jfs_fast_symlink_inode_operations;  in jfs_iget()
55 			inode->i_link = JFS_IP(inode)->i_inline;  in jfs_iget()
57 			 * The inline data should be null-terminated, but  in jfs_iget()
58 			 * don't let on-disk corruption crash the kernel  in jfs_iget()
60 			inode->i_link[inode->i_size] = '\0';  in jfs_iget()
63 		inode->i_op = &jfs_file_inode_operations;  in jfs_iget()
64 		init_special_inode(inode, inode->i_mode, inode->i_rdev);  in jfs_iget()
85 	if (inode->i_nlink == 0 || !test_cflag(COMMIT_Dirty, inode))  in jfs_commit_inode()
89 		/* kernel allows writes to devices on read-only  in jfs_commit_inode()
92 		if (!special_file(inode->i_mode) && noisy) {  in jfs_commit_inode()
93 			jfs_err("jfs_commit_inode(0x%p) called on read-only volume",  in jfs_commit_inode()
96 			noisy--;  in jfs_commit_inode()
101 	tid = txBegin(inode->i_sb, COMMIT_INODE);  in jfs_commit_inode()
102 	mutex_lock(&JFS_IP(inode)->commit_mutex);  in jfs_commit_inode()
107 	if (inode->i_nlink && test_cflag(COMMIT_Dirty, inode))  in jfs_commit_inode()
108 		rc = txCommit(tid, 1, &inode, wait ? COMMIT_SYNC : 0);  in jfs_commit_inode()
111 	mutex_unlock(&JFS_IP(inode)->commit_mutex);  in jfs_commit_inode()
117 	int wait = wbc->sync_mode == WB_SYNC_ALL;  in jfs_write_inode()
119 	if (inode->i_nlink == 0)  in jfs_write_inode()
128 		jfs_flush_journal(JFS_SBI(inode->i_sb)->log, wait);  in jfs_write_inode()
134 		return -EIO;  in jfs_write_inode()
145 	if (!inode->i_nlink && !is_bad_inode(inode)) {  in jfs_evict_inode()
148 		if (JFS_IP(inode)->fileset == FILESYSTEM_I) {  in jfs_evict_inode()
149 			struct inode *ipimap = JFS_SBI(inode->i_sb)->ipimap;  in jfs_evict_inode()
150 			truncate_inode_pages_final(&inode->i_data);  in jfs_evict_inode()
155 			if (ipimap && JFS_IP(ipimap)->i_imap)  in jfs_evict_inode()
164 		truncate_inode_pages_final(&inode->i_data);  in jfs_evict_inode()
169 	BUG_ON(!list_empty(&ji->anon_inode_list));  in jfs_evict_inode()
171 	spin_lock_irq(&ji->ag_lock);  in jfs_evict_inode()
172 	if (ji->active_ag != -1) {  in jfs_evict_inode()
173 		struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap;  in jfs_evict_inode()
174 		atomic_dec(&bmap->db_active[ji->active_ag]);  in jfs_evict_inode()
175 		ji->active_ag = -1;  in jfs_evict_inode()
177 	spin_unlock_irq(&ji->ag_lock);  in jfs_evict_inode()
185 		if (!special_file(inode->i_mode) && noisy) {  in jfs_dirty_inode()
186 			/* kernel allows writes to devices on read-only  in jfs_dirty_inode()
189 			jfs_err("jfs_dirty_inode called on read-only volume");  in jfs_dirty_inode()
191 			noisy--;  in jfs_dirty_inode()
207 	s32 xlen = bh_result->b_size >> ip->i_blkbits;  in jfs_get_block()  local
217 	if (((lblock64 << ip->i_sb->s_blocksize_bits) < ip->i_size) &&  in jfs_get_block()
218 	    (!xtLookup(ip, lblock64, xlen, &xflag, &xaddr, &xlen, 0)) &&  in jfs_get_block()
228 			XADlength(&xad, xlen);  in jfs_get_block()
236 		map_bh(bh_result, ip->i_sb, xaddr);  in jfs_get_block()
237 		bh_result->b_size = xlen << ip->i_blkbits;  in jfs_get_block()
246 	if ((rc = extHint(ip, lblock64 << ip->i_sb->s_blocksize_bits, &xad)))  in jfs_get_block()
248 	rc = extAlloc(ip, xlen, lblock64, &xad, false);  in jfs_get_block()
253 	map_bh(bh_result, ip->i_sb, addressXAD(&xad));  in jfs_get_block()
254 	bh_result->b_size = lengthXAD(&xad) << ip->i_blkbits;  in jfs_get_block()
285 	struct inode *inode = mapping->host;  in jfs_write_failed()
287 	if (to > inode->i_size) {  in jfs_write_failed()
288 		truncate_pagecache(inode, inode->i_size);  in jfs_write_failed()
325 	struct file *file = iocb->ki_filp;  in jfs_direct_IO()
326 	struct address_space *mapping = file->f_mapping;  in jfs_direct_IO()
327 	struct inode *inode = file->f_mapping->host;  in jfs_direct_IO()
339 		loff_t end = iocb->ki_pos + count;  in jfs_direct_IO()
378 		tid = txBegin(ip->i_sb, 0);  in jfs_truncate_nolock()
386 		mutex_lock(&JFS_IP(ip)->commit_mutex);  in jfs_truncate_nolock()
392 			mutex_unlock(&JFS_IP(ip)->commit_mutex);  in jfs_truncate_nolock()
399 		txCommit(tid, 1, &ip, 0);  in jfs_truncate_nolock()
401 		mutex_unlock(&JFS_IP(ip)->commit_mutex);  in jfs_truncate_nolock()
407 	jfs_info("jfs_truncate: size = 0x%lx", (ulong) ip->i_size);  in jfs_truncate()
409 	block_truncate_page(ip->i_mapping, ip->i_size, jfs_get_block);  in jfs_truncate()
412 	jfs_truncate_nolock(ip, ip->i_size);  in jfs_truncate()