CockroachDB diff to enable deletion pacing in RocksDB

50196.diff

diff --git a/c-deps/libroach/options.cc b/c-deps/libroach/options.cc
index 366c141e73..0692601b33 100644
--- a/c-deps/libroach/options.cc
+++ b/c-deps/libroach/options.cc
@@ -12,6 +12,7 @@
 #include <rocksdb/env.h>
 #include <rocksdb/filter_policy.h>
 #include <rocksdb/slice_transform.h>
+#include <rocksdb/sst_file_manager.h>
 #include <rocksdb/table.h>
 #include "cache.h"
 #include "comparator.h"
@@ -178,6 +179,10 @@ rocksdb::Options DBMakeOptions(DBOptions db_opts) {
   // `FlushWAL(true)` on non-temp stores. On the temp store we do not intend to
   // sync WAL ever, so setting it to zero is fine there too.
   options.wal_bytes_per_sync = 0;
+  // Create an SST File manager to pace file deletions. Not pacing deletions
+  // could, in some hardware, lead to short term disk stalls.
+  options.sst_file_manager.reset(rocksdb::NewSstFileManager(options.env, options.info_log,
+      "", 2 << 20 /* rate_bytes_per_sec = 2MB */));

   // On ext4 and xfs, at least, `fallocate()`ing a large empty WAL is not enough
   // to avoid inode writeback on every `fdatasync()`. Although `fallocate()` can