diff options
Diffstat (limited to 'fs/xfs/xfs_file.c')
| -rw-r--r-- | fs/xfs/xfs_file.c | 46 |
1 files changed, 34 insertions, 12 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 52c91e143725..003c0051b62f 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -261,7 +261,8 @@ xfs_file_aio_read( xfs_buftarg_t *target = XFS_IS_REALTIME_INODE(ip) ? mp->m_rtdev_targp : mp->m_ddev_targp; - if ((pos & target->bt_smask) || (size & target->bt_smask)) { + /* DIO must be aligned to device logical sector size */ + if ((pos | size) & target->bt_logical_sectormask) { if (pos == i_size_read(inode)) return 0; return -XFS_ERROR(EINVAL); @@ -641,9 +642,11 @@ xfs_file_dio_aio_write( struct xfs_buftarg *target = XFS_IS_REALTIME_INODE(ip) ? mp->m_rtdev_targp : mp->m_ddev_targp; - if ((pos & target->bt_smask) || (count & target->bt_smask)) + /* DIO must be aligned to device logical sector size */ + if ((pos | count) & target->bt_logical_sectormask) return -XFS_ERROR(EINVAL); + /* "unaligned" here means not aligned to a filesystem block */ if ((pos & mp->m_blockmask) || ((pos + count) & mp->m_blockmask)) unaligned_io = 1; @@ -796,7 +799,7 @@ xfs_file_aio_write( XFS_STATS_ADD(xs_write_bytes, ret); /* Handle various SYNC-type writes */ - err = generic_write_sync(file, pos, ret); + err = generic_write_sync(file, iocb->ki_pos - ret, ret); if (err < 0) ret = err; } @@ -820,7 +823,8 @@ xfs_file_fallocate( if (!S_ISREG(inode->i_mode)) return -EINVAL; - if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) + if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | + FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE)) return -EOPNOTSUPP; xfs_ilock(ip, XFS_IOLOCK_EXCL); @@ -828,6 +832,20 @@ xfs_file_fallocate( error = xfs_free_file_space(ip, offset, len); if (error) goto out_unlock; + } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { + unsigned blksize_mask = (1 << inode->i_blkbits) - 1; + + if (offset & blksize_mask || len & blksize_mask) { + error = -EINVAL; + goto out_unlock; + } + + ASSERT(offset + len < i_size_read(inode)); + new_size = i_size_read(inode) - len; + + error = xfs_collapse_file_space(ip, offset, len); + if (error) + goto out_unlock; } else { if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + len > i_size_read(inode)) { @@ -837,8 +855,11 @@ xfs_file_fallocate( goto out_unlock; } - error = xfs_alloc_file_space(ip, offset, len, - XFS_BMAPI_PREALLOC); + if (mode & FALLOC_FL_ZERO_RANGE) + error = xfs_zero_file_space(ip, offset, len); + else + error = xfs_alloc_file_space(ip, offset, len, + XFS_BMAPI_PREALLOC); if (error) goto out_unlock; } @@ -856,7 +877,7 @@ xfs_file_fallocate( if (ip->i_d.di_mode & S_IXGRP) ip->i_d.di_mode &= ~S_ISGID; - if (!(mode & FALLOC_FL_PUNCH_HOLE)) + if (!(mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE))) ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC; xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG); @@ -912,7 +933,7 @@ xfs_dir_open( * If there are any blocks, read-ahead block 0 as we're almost * certain to have the next operation be a read there. */ - mode = xfs_ilock_map_shared(ip); + mode = xfs_ilock_data_map_shared(ip); if (ip->i_d.di_nextents > 0) xfs_dir3_data_readahead(NULL, ip, 0, -1); xfs_iunlock(ip, mode); @@ -1215,7 +1236,7 @@ xfs_seek_data( uint lock; int error; - lock = xfs_ilock_map_shared(ip); + lock = xfs_ilock_data_map_shared(ip); isize = i_size_read(inode); if (start >= isize) { @@ -1294,7 +1315,7 @@ out: offset = vfs_setpos(file, offset, inode->i_sb->s_maxbytes); out_unlock: - xfs_iunlock_map_shared(ip, lock); + xfs_iunlock(ip, lock); if (error) return -error; @@ -1319,7 +1340,7 @@ xfs_seek_hole( if (XFS_FORCED_SHUTDOWN(mp)) return -XFS_ERROR(EIO); - lock = xfs_ilock_map_shared(ip); + lock = xfs_ilock_data_map_shared(ip); isize = i_size_read(inode); if (start >= isize) { @@ -1402,7 +1423,7 @@ out: offset = vfs_setpos(file, offset, inode->i_sb->s_maxbytes); out_unlock: - xfs_iunlock_map_shared(ip, lock); + xfs_iunlock(ip, lock); if (error) return -error; @@ -1462,6 +1483,7 @@ const struct file_operations xfs_dir_file_operations = { static const struct vm_operations_struct xfs_file_vm_ops = { .fault = filemap_fault, + .map_pages = filemap_map_pages, .page_mkwrite = xfs_vm_page_mkwrite, .remap_pages = generic_file_remap_pages, }; |
