From: Timo Sirainen <tss@iki.fi>
Date: Thu, 2 Apr 2009 18:10:16 +0000 (-0400)
Subject: If epoll_create() fails with EMFILE, suggest increasing epoll's max_user_instances.
X-Git-Tag: 1.2.rc1~18
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=717a444a466280a84a468220f647fdcb9f3b546f;p=thirdparty%2Fdovecot%2Fcore.git

If epoll_create() fails with EMFILE, suggest increasing epoll's max_user_instances.

--HG--
branch : HEAD
---

diff --git a/src/lib/ioloop-epoll.c b/src/lib/ioloop-epoll.c
index b828816791..adda4a1c97 100644
--- a/src/lib/ioloop-epoll.c
+++ b/src/lib/ioloop-epoll.c
@@ -35,8 +35,14 @@ void io_loop_handler_init(struct ioloop *ioloop, unsigned int initial_fd_count)
 	i_array_init(&ctx->fd_index, initial_fd_count);
 
 	ctx->epfd = epoll_create(initial_fd_count);
-	if (ctx->epfd < 0)
-		i_fatal("epoll_create(): %m");
+	if (ctx->epfd < 0) {
+		if (errno != EMFILE)
+			i_fatal("epoll_create(): %m");
+		else {
+			i_fatal("epoll_create(): %m (you may need to increase "
+				"/proc/sys/fs/epoll/max_user_instances)");
+		}
+	}
 	fd_close_on_exec(ctx->epfd, TRUE);
 }