diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-10-03 19:28:46 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-10-03 19:28:46 +0200 |
| commit | f68ec0c24755e5cdb779be6240925f2175311d84 (patch) | |
| tree | a7b7128e61a8456385d82bd1c7ca5f14eecbf2ca /fs/ubifs/gc.c | |
| parent | 98920dc3d1113b883cbc73e3293446d3525c6042 (diff) | |
| parent | 94aca1dac6f6d21f4b07e4864baf7768cabcc6e7 (diff) | |
Merge commit 'v2.6.27-rc8' into x86/setup
Diffstat (limited to 'fs/ubifs/gc.c')
| -rw-r--r-- | fs/ubifs/gc.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c index d0f3dac29081..02aba36fe3d4 100644 --- a/fs/ubifs/gc.c +++ b/fs/ubifs/gc.c @@ -334,15 +334,21 @@ int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp) err = move_nodes(c, sleb); if (err) - goto out; + goto out_inc_seq; err = gc_sync_wbufs(c); if (err) - goto out; + goto out_inc_seq; err = ubifs_change_one_lp(c, lnum, c->leb_size, 0, 0, 0, 0); if (err) - goto out; + goto out_inc_seq; + + /* Allow for races with TNC */ + c->gced_lnum = lnum; + smp_wmb(); + c->gc_seq += 1; + smp_wmb(); if (c->gc_lnum == -1) { c->gc_lnum = lnum; @@ -363,6 +369,14 @@ int ubifs_garbage_collect_leb(struct ubifs_info *c, struct ubifs_lprops *lp) out: ubifs_scan_destroy(sleb); return err; + +out_inc_seq: + /* We may have moved at least some nodes so allow for races with TNC */ + c->gced_lnum = lnum; + smp_wmb(); + c->gc_seq += 1; + smp_wmb(); + goto out; } /** |