Merge commit 'v2.6.39' into for-2.6.40/core

Since for-2.6.40/core was forked off the 2.6.39 devel tree, we've
had churn in the core area that makes it difficult to handle
patches for eg cfq or blk-throttle. Instead of requiring that they
be based in older versions with bugs that have been fixed later
in the rc cycle, merge in 2.6.39 final.

Also fixes up conflicts in the below files.

Conflicts:
	drivers/block/paride/pcd.c
	drivers/cdrom/viocd.c
	drivers/ide/ide-cd.c

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

2 files changed, 12 insertions, 1 deletions

diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c
index 2a6bc50e8a4..02caa7dd51c 100644
--- a/drivers/ide/ide-cd_ioctl.c
+++ b/drivers/ide/ide-cd_ioctl.c
@@ -79,6 +79,12 @@ int ide_cdrom_drive_status(struct cdrom_device_info *cdi, int slot_nr)
 	return CDS_DRIVE_NOT_READY;
 }
 
+/*
+ * ide-cd always generates media changed event if media is missing, which
+ * makes it impossible to use for proper event reporting, so disk->events
+ * is cleared to 0 and the following function is used only to trigger
+ * revalidation and never propagated to userland.
+ */
 unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *cdi,
 					 unsigned int clearing, int slot_nr)
 {
diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c
index c4ffd488893..70ea8763567 100644
--- a/drivers/ide/ide-gd.c
+++ b/drivers/ide/ide-gd.c
@@ -298,6 +298,12 @@ static unsigned int ide_gd_check_events(struct gendisk *disk,
 		return 0;
 	}
 
+	/*
+	 * The following is used to force revalidation on the first open on
+	 * removeable devices, and never gets reported to userland as
+	 * genhd->events is 0.  This is intended as removeable ide disk
+	 * can't really detect MEDIA_CHANGE events.
+	 */
 	ret = drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED;
 	drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
 
@@ -413,7 +419,6 @@ static int ide_gd_probe(ide_drive_t *drive)
 	if (drive->dev_flags & IDE_DFLAG_REMOVABLE)
 		g->flags = GENHD_FL_REMOVABLE;
 	g->fops = &ide_gd_ops;
-	g->events = DISK_EVENT_MEDIA_CHANGE;
 	add_disk(g);
 	return 0;