This is for the RFS file system. There is a bug in the group search algorithm
where it will skip groups, causing blocks to remain unallocated. This is
dependant on the size of the blocks and number of blocks in a group, so it does
not always show up. The fix corrects the skipping of groups during the search,
allowing all of the blocks to be found.
---
cpukit/libfs/src/rfs/rtems-rfs-group.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/cpukit/libfs/src/rfs/rtems-rfs-group.c
b/cpukit/libfs/src/rfs/rtems-rfs-group.c
index b08e785..a3df955 100644
--- a/cpukit/libfs/src/rfs/rtems-rfs-group.c
+++ b/cpukit/libfs/src/rfs/rtems-rfs-group.c
@@ -232,10 +232,24 @@ rtems_rfs_group_bitmap_alloc (rtems_rfs_file_system* fs,
return 0;
}
+ /*
+ * If we are still looking back and forth around the
+ * group_start, then alternate the direction and
+ * increment the offset on every other iteration.
+ * Otherwise we are marching through the groups, so just
+ * increment the offset.
+ */
if (updown)
+ {
direction = direction > 0 ? -1 : 1;
+ if ( direction == -1 )
+ offset++;
+ }
+ else
+ {
+ offset++;
+ }
- offset++;
}
if (rtems_rfs_trace (RTEMS_RFS_TRACE_GROUP_BITMAPS))
--
1.8.3.2
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