diff options
Diffstat (limited to 'source4/lib/tdb/common/open.c')
| -rw-r--r-- | source4/lib/tdb/common/open.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/source4/lib/tdb/common/open.c b/source4/lib/tdb/common/open.c index 7ebc067175..cb4a9cd994 100644 --- a/source4/lib/tdb/common/open.c +++ b/source4/lib/tdb/common/open.c @@ -424,11 +424,27 @@ fail: } /* reopen all tdb's */ -int tdb_reopen_all(void) +int tdb_reopen_all(int parent_longlived) { struct tdb_context *tdb; for (tdb=tdbs; tdb; tdb = tdb->next) { + /* + * If the parent is longlived (ie. a + * parent daemon architecture), we know + * it will keep it's active lock on a + * tdb opened with CLEAR_IF_FIRST. Thus + * for child processes we don't have to + * add an active lock. This is essential + * to improve performance on systems that + * keep POSIX locks as a non-scalable data + * structure in the kernel. + */ + if (parent_longlived) { + /* Ensure no clear-if-first. */ + tdb->flags &= ~TDB_CLEAR_IF_FIRST; + } + if (tdb_reopen(tdb) != 0) return -1; } |