diff options
Diffstat (limited to 'fs/xfs/xfs_bmap_util.c')
| -rw-r--r-- | fs/xfs/xfs_bmap_util.c | 126 |
1 files changed, 54 insertions, 72 deletions
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 1707980f9a4b..92e8f99a5857 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -1122,14 +1122,6 @@ xfs_zero_remaining_bytes( if (endoff > XFS_ISIZE(ip)) endoff = XFS_ISIZE(ip); - bp = xfs_buf_get_uncached(XFS_IS_REALTIME_INODE(ip) ? - mp->m_rtdev_targp : mp->m_ddev_targp, - BTOBB(mp->m_sb.sb_blocksize), 0); - if (!bp) - return -ENOMEM; - - xfs_buf_unlock(bp); - for (offset = startoff; offset <= endoff; offset = lastoffset + 1) { uint lock_mode; @@ -1152,42 +1144,24 @@ xfs_zero_remaining_bytes( ASSERT(imap.br_startblock != DELAYSTARTBLOCK); if (imap.br_state == XFS_EXT_UNWRITTEN) continue; - XFS_BUF_UNDONE(bp); - XFS_BUF_UNWRITE(bp); - XFS_BUF_READ(bp); - XFS_BUF_SET_ADDR(bp, xfs_fsb_to_db(ip, imap.br_startblock)); - if (XFS_FORCED_SHUTDOWN(mp)) { - error = -EIO; - break; - } - xfs_buf_iorequest(bp); - error = xfs_buf_iowait(bp); - if (error) { - xfs_buf_ioerror_alert(bp, - "xfs_zero_remaining_bytes(read)"); - break; - } + error = xfs_buf_read_uncached(XFS_IS_REALTIME_INODE(ip) ? + mp->m_rtdev_targp : mp->m_ddev_targp, + xfs_fsb_to_db(ip, imap.br_startblock), + BTOBB(mp->m_sb.sb_blocksize), + 0, &bp, NULL); + if (error) + return error; + memset(bp->b_addr + - (offset - XFS_FSB_TO_B(mp, imap.br_startoff)), - 0, lastoffset - offset + 1); - XFS_BUF_UNDONE(bp); - XFS_BUF_UNREAD(bp); - XFS_BUF_WRITE(bp); - - if (XFS_FORCED_SHUTDOWN(mp)) { - error = -EIO; - break; - } - xfs_buf_iorequest(bp); - error = xfs_buf_iowait(bp); - if (error) { - xfs_buf_ioerror_alert(bp, - "xfs_zero_remaining_bytes(write)"); - break; - } + (offset - XFS_FSB_TO_B(mp, imap.br_startoff)), + 0, lastoffset - offset + 1); + + error = xfs_bwrite(bp); + xfs_buf_relse(bp); + if (error) + return error; } - xfs_buf_free(bp); return error; } @@ -1205,6 +1179,7 @@ xfs_free_file_space( xfs_bmap_free_t free_list; xfs_bmbt_irec_t imap; xfs_off_t ioffset; + xfs_off_t iendoffset; xfs_extlen_t mod=0; xfs_mount_t *mp; int nimap; @@ -1233,12 +1208,13 @@ xfs_free_file_space( inode_dio_wait(VFS_I(ip)); rounding = max_t(xfs_off_t, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE); - ioffset = offset & ~(rounding - 1); - error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, - ioffset, -1); + ioffset = round_down(offset, rounding); + iendoffset = round_up(offset + len, rounding) - 1; + error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, ioffset, + iendoffset); if (error) goto out; - truncate_pagecache_range(VFS_I(ip), ioffset, -1); + truncate_pagecache_range(VFS_I(ip), ioffset, iendoffset); /* * Need to zero the stuff we're not freeing, on disk. @@ -1392,14 +1368,14 @@ xfs_zero_file_space( if (start_boundary < end_boundary - 1) { /* - * punch out delayed allocation blocks and the page cache over - * the conversion range + * Writeback the range to ensure any inode size updates due to + * appending writes make it to disk (otherwise we could just + * punch out the delalloc blocks). */ - xfs_ilock(ip, XFS_ILOCK_EXCL); - error = xfs_bmap_punch_delalloc_range(ip, - XFS_B_TO_FSBT(mp, start_boundary), - XFS_B_TO_FSB(mp, end_boundary - start_boundary)); - xfs_iunlock(ip, XFS_ILOCK_EXCL); + error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, + start_boundary, end_boundary - 1); + if (error) + goto out; truncate_pagecache_range(VFS_I(ip), start_boundary, end_boundary - 1); @@ -1456,41 +1432,47 @@ xfs_collapse_file_space( struct xfs_mount *mp = ip->i_mount; struct xfs_trans *tp; int error; - xfs_extnum_t current_ext = 0; struct xfs_bmap_free free_list; xfs_fsblock_t first_block; int committed; xfs_fileoff_t start_fsb; + xfs_fileoff_t next_fsb; xfs_fileoff_t shift_fsb; ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); trace_xfs_collapse_file_space(ip); - start_fsb = XFS_B_TO_FSB(mp, offset + len); + next_fsb = XFS_B_TO_FSB(mp, offset + len); shift_fsb = XFS_B_TO_FSB(mp, len); - /* - * Writeback the entire file and force remove any post-eof blocks. The - * writeback prevents changes to the extent list via concurrent - * writeback and the eofblocks trim prevents the extent shift algorithm - * from running into a post-eof delalloc extent. - * - * XXX: This is a temporary fix until the extent shift loop below is - * converted to use offsets and lookups within the ILOCK rather than - * carrying around the index into the extent list for the next - * iteration. - */ - error = filemap_write_and_wait(VFS_I(ip)->i_mapping); + error = xfs_free_file_space(ip, offset, len); if (error) return error; + + /* + * Trim eofblocks to avoid shifting uninitialized post-eof preallocation + * into the accessible region of the file. + */ if (xfs_can_free_eofblocks(ip, true)) { error = xfs_free_eofblocks(mp, ip, false); if (error) return error; } - error = xfs_free_file_space(ip, offset, len); + /* + * Writeback and invalidate cache for the remainder of the file as we're + * about to shift down every extent from the collapse range to EOF. The + * free of the collapse range above might have already done some of + * this, but we shouldn't rely on it to do anything outside of the range + * that was freed. + */ + error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, + offset + len, -1); + if (error) + return error; + error = invalidate_inode_pages2_range(VFS_I(ip)->i_mapping, + (offset + len) >> PAGE_CACHE_SHIFT, -1); if (error) return error; @@ -1525,10 +1507,10 @@ xfs_collapse_file_space( * We are using the write transaction in which max 2 bmbt * updates are allowed */ - error = xfs_bmap_shift_extents(tp, ip, &done, start_fsb, - shift_fsb, ¤t_ext, - &first_block, &free_list, - XFS_BMAP_MAX_SHIFT_EXTENTS); + start_fsb = next_fsb; + error = xfs_bmap_shift_extents(tp, ip, start_fsb, shift_fsb, + &done, &next_fsb, &first_block, &free_list, + XFS_BMAP_MAX_SHIFT_EXTENTS); if (error) goto out; @@ -1638,7 +1620,7 @@ xfs_swap_extents_check_format( return 0; } -int +static int xfs_swap_extent_flush( struct xfs_inode *ip) { |