diff options
Diffstat (limited to 'fs/xfs/xfs_reflink.c')
| -rw-r--r-- | fs/xfs/xfs_reflink.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index 79dec457f7fb..4abb2aea8f31 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -1122,13 +1122,15 @@ xfs_reflink_remap_blocks( loff_t pos_in, struct xfs_inode *dest, loff_t pos_out, - loff_t remap_len) + loff_t remap_len, + loff_t *remapped) { struct xfs_bmbt_irec imap; xfs_fileoff_t srcoff; xfs_fileoff_t destoff; xfs_filblks_t len; xfs_filblks_t range_len; + xfs_filblks_t remapped_len = 0; xfs_off_t new_isize = pos_out + remap_len; int nimaps; int error = 0; @@ -1175,10 +1177,13 @@ xfs_reflink_remap_blocks( srcoff += range_len; destoff += range_len; len -= range_len; + remapped_len += range_len; } if (error) trace_xfs_reflink_remap_blocks_error(dest, error, _RET_IP_); + *remapped = min_t(loff_t, remap_len, + XFS_FSB_TO_B(src->i_mount, remapped_len)); return error; } @@ -1387,7 +1392,7 @@ out_unlock: /* * Link a range of blocks from one file to another. */ -int +loff_t xfs_reflink_remap_range( struct file *file_in, loff_t pos_in, @@ -1401,8 +1406,9 @@ xfs_reflink_remap_range( struct inode *inode_out = file_inode(file_out); struct xfs_inode *dest = XFS_I(inode_out); struct xfs_mount *mp = src->i_mount; + loff_t remapped = 0; xfs_extlen_t cowextsize; - ssize_t ret; + int ret; if (!xfs_sb_version_hasreflink(&mp->m_sb)) return -EOPNOTSUPP; @@ -1418,7 +1424,8 @@ xfs_reflink_remap_range( trace_xfs_reflink_remap_range(src, pos_in, len, dest, pos_out); - ret = xfs_reflink_remap_blocks(src, pos_in, dest, pos_out, len); + ret = xfs_reflink_remap_blocks(src, pos_in, dest, pos_out, len, + &remapped); if (ret) goto out_unlock; @@ -1441,7 +1448,7 @@ out_unlock: xfs_reflink_remap_unlock(file_in, file_out); if (ret) trace_xfs_reflink_remap_range_error(dest, ret, _RET_IP_); - return ret; + return remapped > 0 ? remapped : ret; } /* |