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Do a cacheflush after writing data pages, separate from meta's cacheflush
This commit is contained in:
Howard Chu 2014-08-04 11:40:24 -07:00
parent ae0c9f484d
commit 899b23f89d
1 changed files with 7 additions and 1 deletions
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8
libraries/liblmdb/mdb.c
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@ -3110,6 +3110,12 @@ mdb_page_flush(MDB_txn *txn, int keep)
#endif /* _WIN32 */ #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; ) { for (i = keep; ++i <= pagecount; ) {
dp = dl[i].mptr; dp = dl[i].mptr;
/* This is a page we skipped above */ /* This is a page we skipped above */
@ -3583,7 +3589,7 @@ fail:
done: done:
/* MIPS has cache coherency issues, this is a no-op everywhere else */ /* MIPS has cache coherency issues, this is a no-op everywhere else */
if (!(env->me_flags & MDB_WRITEMAP)) { 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 /* Memory ordering issues are irrelevant; since the entire writer
* is wrapped by wmutex, all of these changes will become visible * is wrapped by wmutex, all of these changes will become visible