diff options
| author | Maxim Levitsky <maximlevitsky@gmail.com> | 2010-02-22 18:39:30 (GMT) |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2010-02-26 17:05:26 (GMT) |
| commit | 048d87199566663e4edc4880df3703c04bcf41d9 (patch) | |
| tree | da875d4f7802d6ca8a7db9f2cdba57b74d6c3672 /include | |
| parent | a863862257b7dd08d855bafcb0aedd9ad848ed91 (diff) | |
| download | linux-048d87199566663e4edc4880df3703c04bcf41d9.tar.xz | |
mtd: blktrans: Hotplug fixes
* Add locking where it was missing.
* Don't do a get_mtd_device in blktrans_open because it would lead to a
deadlock; instead do that in add_mtd_blktrans_dev.
* Only free the mtd_blktrans_dev structure when the last user exits.
* Flush request queue on device removal.
* Track users, and call tr->release in del_mtd_blktrans_dev
Due to that ->open and release aren't called more that once.
Now it is safe to call del_mtd_blktrans_dev while the device is still in use.
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mtd/blktrans.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mtd/blktrans.h b/include/linux/mtd/blktrans.h index a4b3928..d89b8fb 100644 --- a/include/linux/mtd/blktrans.h +++ b/include/linux/mtd/blktrans.h @@ -9,6 +9,7 @@ #define __MTD_TRANS_H__ #include <linux/mutex.h> +#include <linux/kref.h> struct hd_geometry; struct mtd_info; @@ -24,6 +25,8 @@ struct mtd_blktrans_dev { int devnum; unsigned long size; int readonly; + int open; + struct kref ref; struct gendisk *disk; struct task_struct *thread; struct request_queue *rq; |