From 899b23f89dd9f0eeb795d0772c0a8cd046c84ec3 Mon Sep 17 00:00:00 2001 From: Howard Chu Date: Mon, 4 Aug 2014 11:40:24 -0700 Subject: [PATCH 1/1] More for MIPS Do a cacheflush after writing data pages, separate from meta's cacheflush --- libraries/liblmdb/mdb.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c index dddfed1c66..8b560ed32e 100644 --- a/libraries/liblmdb/mdb.c +++ b/libraries/liblmdb/mdb.c @@ -3110,6 +3110,12 @@ mdb_page_flush(MDB_txn *txn, int keep) #endif /* _WIN32 */ } + /* MIPS has cache coherency issues, this is a no-op everywhere else + * Note: for any size >= on-chip cache size, entire on-chip cache is + * flushed. + */ + CACHEFLUSH(env->me_map, txn->mt_next_pgno * env->me_psize, DCACHE); + for (i = keep; ++i <= pagecount; ) { dp = dl[i].mptr; /* This is a page we skipped above */ @@ -3583,7 +3589,7 @@ fail: done: /* MIPS has cache coherency issues, this is a no-op everywhere else */ if (!(env->me_flags & MDB_WRITEMAP)) { - CACHEFLUSH(env->me_map, txn->mt_next_pgno * env->me_psize, DCACHE); + CACHEFLUSH(env->me_map + off, len, DCACHE); } /* Memory ordering issues are irrelevant; since the entire writer * is wrapped by wmutex, all of these changes will become visible -- 2.39.2