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-rw-r--r--lib/tdb/common/transaction.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/lib/tdb/common/transaction.c b/lib/tdb/common/transaction.c
index 20f2bfc2cd..b8988ea830 100644
--- a/lib/tdb/common/transaction.c
+++ b/lib/tdb/common/transaction.c
@@ -135,6 +135,9 @@ struct tdb_transaction {
bool prepared;
tdb_off_t magic_offset;
+ /* set when the GLOBAL_LOCK has been taken */
+ bool global_lock_taken;
+
/* old file size before transaction */
tdb_len_t old_map_size;
@@ -603,6 +606,11 @@ int _tdb_transaction_cancel(struct tdb_context *tdb)
}
}
+ if (tdb->transaction->global_lock_taken) {
+ tdb_brlock(tdb, GLOBAL_LOCK, F_UNLCK, F_SETLKW, 0, 1);
+ tdb->transaction->global_lock_taken = false;
+ }
+
/* remove any global lock created during the transaction */
if (tdb->global_lock.count != 0) {
tdb_brlock(tdb, FREELIST_TOP, F_UNLCK, F_SETLKW, 0, 4*tdb->header.hash_size);
@@ -947,11 +955,12 @@ static int _tdb_transaction_prepare_commit(struct tdb_context *tdb)
return -1;
}
+ tdb->transaction->global_lock_taken = true;
+
if (!(tdb->flags & TDB_NOSYNC)) {
/* write the recovery data to the end of the file */
if (transaction_setup_recovery(tdb, &tdb->transaction->magic_offset) == -1) {
TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_transaction_prepare_commit: failed to setup recovery data\n"));
- tdb_brlock(tdb, GLOBAL_LOCK, F_UNLCK, F_SETLKW, 0, 1);
_tdb_transaction_cancel(tdb);
return -1;
}
@@ -966,7 +975,6 @@ static int _tdb_transaction_prepare_commit(struct tdb_context *tdb)
tdb->transaction->old_map_size) == -1) {
tdb->ecode = TDB_ERR_IO;
TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_transaction_prepare_commit: expansion failed\n"));
- tdb_brlock(tdb, GLOBAL_LOCK, F_UNLCK, F_SETLKW, 0, 1);
_tdb_transaction_cancel(tdb);
return -1;
}
@@ -1056,7 +1064,6 @@ int tdb_transaction_commit(struct tdb_context *tdb)
tdb_transaction_recover(tdb);
_tdb_transaction_cancel(tdb);
- tdb_brlock(tdb, GLOBAL_LOCK, F_UNLCK, F_SETLKW, 0, 1);
TDB_LOG((tdb, TDB_DEBUG_FATAL, "tdb_transaction_commit: write failed\n"));
return -1;
@@ -1072,8 +1079,6 @@ int tdb_transaction_commit(struct tdb_context *tdb)
return -1;
}
- tdb_brlock(tdb, GLOBAL_LOCK, F_UNLCK, F_SETLKW, 0, 1);
-
/*
TODO: maybe write to some dummy hdr field, or write to magic
offset without mmap, before the last sync, instead of the