From: Aki Tuomi <aki.tuomi@dovecot.fi>
Date: Mon, 21 Nov 2016 11:34:57 +0000 (+0200)
Subject: lib-index: Limit mmap syscall errors in index to 1/s
X-Git-Tag: 2.2.27~83
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ae4d74667c64031ce02dbc8eac1e298610deda52;p=thirdparty%2Fdovecot%2Fcore.git

lib-index: Limit mmap syscall errors in index to 1/s
---

diff --git a/src/lib-index/mail-index-map-read.c b/src/lib-index/mail-index-map-read.c
index 72270063f9..aa905ed727 100644
--- a/src/lib-index/mail-index-map-read.c
+++ b/src/lib-index/mail-index-map-read.c
@@ -8,6 +8,7 @@
 #include "mail-index-private.h"
 #include "mail-index-sync-private.h"
 #include "mail-transaction-log-private.h"
+#include "ioloop.h"
 
 static void mail_index_map_copy_hdr(struct mail_index_map *map,
 				    const struct mail_index_header *hdr)
@@ -47,8 +48,11 @@ static int mail_index_mmap(struct mail_index_map *map, uoff_t file_size)
 				  MAP_PRIVATE, index->fd, 0);
 	if (rec_map->mmap_base == MAP_FAILED) {
 		rec_map->mmap_base = NULL;
-		mail_index_set_syscall_error(index, t_strdup_printf(
-			"mmap(size=%"PRIuUOFF_T")", file_size));
+		if (ioloop_time != index->last_mmap_error_time) {
+			index->last_mmap_error_time = ioloop_time;
+			mail_index_set_syscall_error(index, t_strdup_printf(
+				"mmap(size=%"PRIuUOFF_T")", file_size));
+		}
 		return -1;
 	}
 	rec_map->mmap_size = file_size;
diff --git a/src/lib-index/mail-index-private.h b/src/lib-index/mail-index-private.h
index 8cfb4ffd8c..2a4055ba7a 100644
--- a/src/lib-index/mail-index-private.h
+++ b/src/lib-index/mail-index-private.h
@@ -183,6 +183,9 @@ struct mail_index {
 	int fd;
 
 	struct mail_index_map *map;
+
+	time_t last_mmap_error_time;
+
 	uint32_t indexid;
 	unsigned int inconsistency_id;