From 86ce18d7b7925bfd6b64c061828ca2a857ee83b8 Mon Sep 17 00:00:00 2001 From: Kristen Carlson Accardi Date: Wed, 23 May 2007 13:57:38 -0700 Subject: genhd: expose AN to user space Allow user space to determine if a disk supports Asynchronous Notification of media changes. This is done by adding a new sysfs file "capability_flags", which is documented in (insert file name). This sysfs file will export all disk capabilities flags to user space. We also define a new flag to define the media change notification capability. Signed-off-by: Kristen Carlson Accardi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/genhd.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/genhd.h') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 4c03ee353e78..3fcfed2168a7 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -94,6 +94,7 @@ struct hd_struct { #define GENHD_FL_REMOVABLE 1 #define GENHD_FL_DRIVERFS 2 +#define GENHD_FL_MEDIA_CHANGE_NOTIFY 4 #define GENHD_FL_CD 8 #define GENHD_FL_UP 16 #define GENHD_FL_SUPPRESS_PARTITION_INFO 32 -- cgit v1.2.3 From 8ce7ad7b2d11fae2c3d285a6a0caea9322c0b8fc Mon Sep 17 00:00:00 2001 From: Kristen Carlson Accardi Date: Wed, 23 May 2007 13:57:38 -0700 Subject: genhd: send async notification on media change Send an uevent to user space to indicate that a media change event has occurred. Signed-off-by: Kristen Carlson Accardi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/genhd.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/linux/genhd.h') diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 3fcfed2168a7..9756fc102a83 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -66,6 +66,7 @@ struct partition { #include #include #include +#include struct partition { unsigned char boot_ind; /* 0x80 - active */ @@ -139,6 +140,7 @@ struct gendisk { #else struct disk_stats dkstats; #endif + struct work_struct async_notify; }; /* Structure for sysfs attributes on block devices */ @@ -420,7 +422,7 @@ extern struct gendisk *alloc_disk_node(int minors, int node_id); extern struct gendisk *alloc_disk(int minors); extern struct kobject *get_disk(struct gendisk *disk); extern void put_disk(struct gendisk *disk); - +extern void genhd_media_change_notify(struct gendisk *disk); extern void blk_register_region(dev_t dev, unsigned long range, struct module *module, struct kobject *(*probe)(dev_t, int *, void *), -- cgit v1.2.3