diff options
| author |   Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2007-12-17 17:37:26 +0200 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2007-12-26 19:15:17 +0200 |
| commit | e73f4459d969bb266f03dd4cbe21bdba8cb2732c (patch) | |
| tree | 5af7655da65f2c33f6ea4efdfaa8b0e0670d6aea /drivers/mtd/ubi/wl.c | |
| parent | UBI: add UBI control device (diff) | |
| download | linux-dev-e73f4459d969bb266f03dd4cbe21bdba8cb2732c.tar.xz linux-dev-e73f4459d969bb266f03dd4cbe21bdba8cb2732c.zip | |
UBI: add UBI devices reference counting
This is one more step on the way to "removable" UBI devices. It
adds reference counting for UBI devices. Every time a volume on
this device is opened - the device's refcount is increased. It
is also increased if someone is reading any sysfs file of this
UBI device or of one of its volumes.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi/wl.c')
| -rw-r--r-- | drivers/mtd/ubi/wl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 7d32f71d6f1e..bfc64c824165 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -1303,6 +1303,7 @@ int ubi_wl_flush(struct ubi_device *ubi) * Make sure all the works which have been done in parallel are * finished. */ + ubi_assert(ubi->ref_count > 0); down_write(&ubi->work_sem); up_write(&ubi->work_sem); |