diff options
Diffstat (limited to 'fs/xfs/xfs_dir2_readdir.c')
| -rw-r--r-- | fs/xfs/xfs_dir2_readdir.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/fs/xfs/xfs_dir2_readdir.c b/fs/xfs/xfs_dir2_readdir.c index 642d55d10075..2fbf643fa10a 100644 --- a/fs/xfs/xfs_dir2_readdir.c +++ b/fs/xfs/xfs_dir2_readdir.c @@ -406,6 +406,7 @@ xfs_dir2_leaf_readbuf( /* * Do we need more readahead? + * Each loop tries to process 1 full dir blk; last may be partial. */ blk_start_plug(&plug); for (mip->ra_index = mip->ra_offset = i = 0; @@ -416,7 +417,8 @@ xfs_dir2_leaf_readbuf( * Read-ahead a contiguous directory block. */ if (i > mip->ra_current && - map[mip->ra_index].br_blockcount >= geo->fsbcount) { + (map[mip->ra_index].br_blockcount - mip->ra_offset) >= + geo->fsbcount) { xfs_dir3_data_readahead(dp, map[mip->ra_index].br_startoff + mip->ra_offset, XFS_FSB_TO_DADDR(dp->i_mount, @@ -437,14 +439,19 @@ xfs_dir2_leaf_readbuf( } /* - * Advance offset through the mapping table. + * Advance offset through the mapping table, processing a full + * dir block even if it is fragmented into several extents. + * But stop if we have consumed all valid mappings, even if + * it's not yet a full directory block. */ - for (j = 0; j < geo->fsbcount; j += length ) { + for (j = 0; + j < geo->fsbcount && mip->ra_index < mip->map_valid; + j += length ) { /* * The rest of this extent but not more than a dir * block. */ - length = min_t(int, geo->fsbcount, + length = min_t(int, geo->fsbcount - j, map[mip->ra_index].br_blockcount - mip->ra_offset); mip->ra_offset += length; |