Doug Ledford: Only signal a udev change event if we actually write a mapfile in RebuildMap

[Martin F. Krafft]

Module: mdadm
Branch: upstream
Commit: 7bf59f5c16d928d3826fdf0c406d1aac5775e78b
URL:    http://git.debian.org/?p=pkg-mdadm/mdadm.git;a=commit;h=7bf59f5c16d928d3826fdf0c406d1aac5775e78b

Author: Doug Ledford <dledford at redhat.com>
Date:   Wed Mar 17 09:28:07 2010 -0400

Only signal a udev change event if we actually write a mapfile in RebuildMap

Signed-off-by: Doug Ledford <dledford at redhat.com>

---

 mapfile.c |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/mapfile.c b/mapfile.c
index 74f7256..d47fde1 100644
--- a/mapfile.c
+++ b/mapfile.c
@@ -471,12 +471,14 @@ void RebuildMap(void)
 		}
 		sysfs_free(sra);
 	}
-	map_write(map);
+	/* Only trigger a change if we wrote a new map file */
+	if (map_write(map))
+		for (md = mdstat ; md ; md = md->next) {
+			struct mdinfo *sra = sysfs_read(-1, md->devnum,
+							GET_VERSION);
+			sysfs_uevent(sra, "change");
+			sysfs_free(sra);
+		}
 	map_free(map);
-	for (md = mdstat ; md ; md = md->next) {
-		struct mdinfo *sra = sysfs_read(-1, md->devnum, GET_VERSION);
-		sysfs_uevent(sra, "change");
-		sysfs_free(sra);
-	}
 	free_mdstat(mdstat);
 }