1 // SPDX-License-Identifier: GPL-2.0
20  * before every operation that can remove blocks from the extent map.
22  * about exposing unallocated blocks but just want to provide basic
33 	struct xfs_inode	*ip = XFS_I(inode);  in xfs_break_leased_layouts()  local
36 	while ((error = break_layout(inode, false)) == -EWOULDBLOCK) {  in xfs_break_leased_layouts()
37 		xfs_iunlock(ip, *iolock);  in xfs_break_leased_layouts()
42 		xfs_ilock(ip, *iolock);  in xfs_break_leased_layouts()
65 		return -EINVAL;  in xfs_fs_get_uuid()
67 	memcpy(buf, &mp->m_sb.sb_uuid, sizeof(uuid_t));  in xfs_fs_get_uuid()
85 	struct xfs_inode	*ip = XFS_I(inode);  in xfs_fs_map_blocks()  local
86 	struct xfs_mount	*mp = ip->i_mount;  in xfs_fs_map_blocks()
96 		return -EIO;  in xfs_fs_map_blocks()
103 	if (XFS_IS_REALTIME_INODE(ip))  in xfs_fs_map_blocks()
104 		return -ENXIO;  in xfs_fs_map_blocks()
110 	if (xfs_is_reflink_inode(ip))  in xfs_fs_map_blocks()
111 		return -ENXIO;  in xfs_fs_map_blocks()
120 	xfs_ilock(ip, XFS_IOLOCK_EXCL);  in xfs_fs_map_blocks()
122 	error = -EINVAL;  in xfs_fs_map_blocks()
123 	limit = mp->m_super->s_maxbytes;  in xfs_fs_map_blocks()
126 				     inode->i_sb->s_blocksize));  in xfs_fs_map_blocks()
129 	if (offset > limit - length)  in xfs_fs_map_blocks()
130 		length = limit - offset;  in xfs_fs_map_blocks()
132 	error = filemap_write_and_wait(inode->i_mapping);  in xfs_fs_map_blocks()
135 	error = invalidate_inode_pages2(inode->i_mapping);  in xfs_fs_map_blocks()
142 	lock_flags = xfs_ilock_data_map_shared(ip);  in xfs_fs_map_blocks()
143 	error = xfs_bmapi_read(ip, offset_fsb, end_fsb - offset_fsb,  in xfs_fs_map_blocks()
150 		if (offset + length > XFS_ISIZE(ip))  in xfs_fs_map_blocks()
151 			end_fsb = xfs_iomap_eof_align_last_fsb(ip, end_fsb);  in xfs_fs_map_blocks()
155 		xfs_iunlock(ip, lock_flags);  in xfs_fs_map_blocks()
157 		error = xfs_iomap_write_direct(ip, offset_fsb,  in xfs_fs_map_blocks()
158 				end_fsb - offset_fsb, &imap);  in xfs_fs_map_blocks()
164 		 * that the blocks allocated and handed out to the client are  in xfs_fs_map_blocks()
167 		error = xfs_update_prealloc_flags(ip,  in xfs_fs_map_blocks()
172 		xfs_iunlock(ip, lock_flags);  in xfs_fs_map_blocks()
174 	xfs_iunlock(ip, XFS_IOLOCK_EXCL);  in xfs_fs_map_blocks()
176 	error = xfs_bmbt_to_iomap(ip, iomap, &imap, 0);  in xfs_fs_map_blocks()
177 	*device_generation = mp->m_generation;  in xfs_fs_map_blocks()
180 	xfs_iunlock(ip, XFS_IOLOCK_EXCL);  in xfs_fs_map_blocks()
189 	struct xfs_inode	*ip,  in xfs_pnfs_validate_isize()  argument
196 	xfs_ilock(ip, XFS_ILOCK_SHARED);  in xfs_pnfs_validate_isize()
197 	error = xfs_bmapi_read(ip, XFS_B_TO_FSBT(ip->i_mount, isize - 1), 1,  in xfs_pnfs_validate_isize()
199 	xfs_iunlock(ip, XFS_ILOCK_SHARED);  in xfs_pnfs_validate_isize()
206 		return -EIO;  in xfs_pnfs_validate_isize()
211  * Make sure the blocks described by maps are stable on disk.  This includes
227 	struct xfs_inode	*ip = XFS_I(inode);  in xfs_fs_commit_blocks()  local
228 	struct xfs_mount	*mp = ip->i_mount;  in xfs_fs_commit_blocks()
234 	ASSERT(iattr->ia_valid & (ATTR_ATIME|ATTR_CTIME|ATTR_MTIME));  in xfs_fs_commit_blocks()
236 	xfs_ilock(ip, XFS_IOLOCK_EXCL);  in xfs_fs_commit_blocks()
239 	if ((iattr->ia_valid & ATTR_SIZE) && iattr->ia_size > size) {  in xfs_fs_commit_blocks()
241 		size = iattr->ia_size;  in xfs_fs_commit_blocks()
255 		length = end - start;  in xfs_fs_commit_blocks()
262 		error = invalidate_inode_pages2_range(inode->i_mapping,  in xfs_fs_commit_blocks()
264 					(end - 1) >> PAGE_SHIFT);  in xfs_fs_commit_blocks()
267 		error = xfs_iomap_write_unwritten(ip, start, length, false);  in xfs_fs_commit_blocks()
273 		error = xfs_pnfs_validate_isize(ip, size);  in xfs_fs_commit_blocks()
278 	error = xfs_trans_alloc(mp, &M_RES(mp)->tr_ichange, 0, 0, 0, &tp);  in xfs_fs_commit_blocks()
282 	xfs_ilock(ip, XFS_ILOCK_EXCL);  in xfs_fs_commit_blocks()
283 	xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);  in xfs_fs_commit_blocks()
284 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);  in xfs_fs_commit_blocks()
286 	xfs_setattr_time(ip, iattr);  in xfs_fs_commit_blocks()
288 		i_size_write(inode, iattr->ia_size);  in xfs_fs_commit_blocks()
289 		ip->i_d.di_size = iattr->ia_size;  in xfs_fs_commit_blocks()
296 	xfs_iunlock(ip, XFS_IOLOCK_EXCL);  in xfs_fs_commit_blocks()