diff options
| author |   Richard Weinberger <richard@nod.at> | 2014-11-10 16:28:08 +0100 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2015-03-26 22:46:02 +0100 |
| commit | 111ab0b26fc1bfad575d1e376e146d194d261e22 (patch) | |
| tree | 451a0a31b6f28d85986569010fa8c3381eb1d622 /drivers/mtd/ubi/build.c | |
| parent | UBI: Fastmap: Set used_ebs only for static volumes (diff) | |
| download | linux-dev-111ab0b26fc1bfad575d1e376e146d194d261e22.tar.xz linux-dev-111ab0b26fc1bfad575d1e376e146d194d261e22.zip | |
UBI: Fastmap: Locking updates
a) Rename ubi->fm_sem to ubi->fm_eba_sem as this semaphore
protects EBA changes.
b) Turn ubi->fm_mutex into a rw semaphore. It will still serialize
fastmap writes but also ensures that ubi_wl_put_peb() is not
interrupted by a fastmap write. We use a rw semaphore to allow
ubi_wl_put_peb() still to be executed in parallel if no fastmap
write is happening.
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'drivers/mtd/ubi/build.c')
| -rw-r--r-- | drivers/mtd/ubi/build.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index 59af91b41f9a..a7571508fdab 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -969,8 +969,8 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, mutex_init(&ubi->ckvol_mutex); mutex_init(&ubi->device_mutex); spin_lock_init(&ubi->volumes_lock); - mutex_init(&ubi->fm_mutex); - init_rwsem(&ubi->fm_sem); + init_rwsem(&ubi->fm_protect); + init_rwsem(&ubi->fm_eba_sem); ubi_msg(ubi, "attaching mtd%d", mtd->index); |