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Description: Give up scanning partitions after ten consecutive open failures
Scanning all the way up to 10000 is excessive and can cause serious
performance problems in some configurations.
Author: Colin Watson <cjwatson@ubuntu.com>
Bug-Ubuntu: https://bugs.launchpad.net/bugs/787461
Forwarded: yes
Applied-Upstream: http://bazaar.launchpad.net/~vcs-imports/grub/grub2-bzr/revision/3320
Last-Update: 2011-05-27
Index: b/grub-core/kern/emu/hostdisk.c
===================================================================
--- a/grub-core/kern/emu/hostdisk.c
+++ b/grub-core/kern/emu/hostdisk.c
@@ -564,6 +564,7 @@
int i;
char real_dev[PATH_MAX];
struct linux_partition_cache *cache;
+ int missing = 0;
strcpy(real_dev, dev);
@@ -602,7 +603,13 @@
fd = open (real_dev, O_RDONLY);
if (fd == -1)
- continue;
+ {
+ if (missing++ < 10)
+ continue;
+ else
+ return 0;
+ }
+ missing = 0;
close (fd);
start = find_partition_start (real_dev);
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