[LogFS] Move reserved segments with journal

Fixes a GC livelock.

Signed-off-by: Joern Engel <joern@logfs.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/logfs/journal.c b/fs/logfs/journal.c
index 15454ac7bd9..25b1345c465 100644
--- a/fs/logfs/journal.c
+++ b/fs/logfs/journal.c
@@ -800,6 +800,7 @@ void do_logfs_journal_wl_pass(struct super_block *sb)
 {
         struct logfs_super *super = logfs_super(sb);
         struct logfs_area *area = super->s_journal_area;
+        struct btree_head32 *head = &super->s_reserved_segments;
         u32 segno, ec;
         int i, err;
 
@@ -807,6 +808,7 @@ void do_logfs_journal_wl_pass(struct super_block *sb)
         /* Drop old segments */
         journal_for_each(i)
                 if (super->s_journal_seg[i]) {
+                        btree_remove32(head, super->s_journal_seg[i]);
                         logfs_set_segment_unreserved(sb,
                                         super->s_journal_seg[i],
                                         super->s_journal_ec[i]);
@@ -819,6 +821,8 @@ void do_logfs_journal_wl_pass(struct super_block *sb)
                 super->s_journal_seg[i] = segno;
                 super->s_journal_ec[i] = ec;
                 logfs_set_segment_reserved(sb, segno);
+                err = btree_insert32(head, segno, (void *)1, GFP_KERNEL);
+                BUG_ON(err); /* mempool should prevent this */
         }
         /* Manually move journal_area */
         freeseg(sb, area->a_segno);