From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 23 Sep 2010 15:35:16 +0000 (+0200)
Subject: readahead: put limit on files we read ahead
X-Git-Tag: v11~91
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e3eb5ba18172ed965e6b91fd7fc05de6c86f739;p=systemd

readahead: put limit on files we read ahead
---

diff --git a/src/readahead-collect.c b/src/readahead-collect.c
index 5ff37110..3699c3db 100644
--- a/src/readahead-collect.c
+++ b/src/readahead-collect.c
@@ -255,6 +255,9 @@ static int collect(const char *root) {
                 ssize_t n;
                 struct fanotify_event_metadata *m;
 
+                if (hashmap_size(files) > READAHEAD_FILES_MAX)
+                        break;
+
                 if (poll(pollfd, _FD_MAX, -1) < 0) {
 
                         if (errno == EINTR)
diff --git a/src/readahead-common.h b/src/readahead-common.h
index da6a74ea..5d8f1a34 100644
--- a/src/readahead-common.h
+++ b/src/readahead-common.h
@@ -25,6 +25,7 @@
 #include <sys/stat.h>
 
 #define READAHEAD_FILE_SIZE_MAX (128*1024*1024)
+#define READAHEAD_FILES_MAX (16*1024)
 
 int file_verify(int fd, const char *fn, struct stat *st);