From bf61dda591bb6b30edbb8bc52f0ba4582990b591 Mon Sep 17 00:00:00 2001
From: Peter Collingbourne <peter@pcc.me.uk>
Date: Wed, 22 Nov 2017 18:27:31 +0000
Subject: [PATCH] CachePruning: Allow limiting the number of files in the cache
 directory.

The default limit is 1000000 but it can be configured with a cache
policy. The motivation is that some filesystems (notably ext4) have
a limit on the number of files that can be contained in a directory
(separate from the inode limit).

Differential Revision: https://reviews.llvm.org/D40327

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@318857 91177308-0d34-0410-b5e6-96231b3b80d8
---
 docs/ThinLTO.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/ThinLTO.rst b/docs/ThinLTO.rst
index 607121fd1e5..14c098b052d 100644
--- a/docs/ThinLTO.rst
+++ b/docs/ThinLTO.rst
@@ -173,6 +173,10 @@ Possible key-value pairs are:
   ``cache_size_bytes=1g`` on its own will cause both the 1GB and default 75%
   policies to be applied unless the default ``cache_size`` is overridden.
 
+- ``cache_size_files=X``:
+  Set the maximum number of files in the cache directory. Set to 0 to indicate
+  no limit. The default is 1000000 files.
+
 - ``prune_after=Xs``, ``prune_after=Xm``, ``prune_after=Xh``: Sets the
   expiration time for cache files to ``X`` seconds (or minutes, hours
   respectively).  When a file hasn't been accessed for ``prune_after`` seconds,
-- 
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