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| author | Philipp Reisner <philipp.reisner@linbit.com> | 2012-08-08 21:19:09 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2012-11-09 14:08:04 +0100 |
| commit | 39a1aa7f49dc8eae5c8d3a4bf759eb7abeabe6c0 (patch) | |
| tree | d75405087a78c53b95c99ab5e2e52230a5e8cc5a /drivers/block/drbd/drbd_int.h | |
| parent | fef45d297e447d710abcf0cd0bdbf8738ff469eb (diff) | |
| download | linux-stable-39a1aa7f49dc8eae5c8d3a4bf759eb7abeabe6c0.tar.gz | |
drbd: Protect accesses to the uuid set with a spinlock
There is at least the worker context, the receiver context, the context of
receiving netlink packts.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_int.h')
| -rw-r--r-- | drivers/block/drbd/drbd_int.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index d8b3c88d6f1c..b83398d64a9c 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -747,6 +747,7 @@ struct drbd_md { u64 md_offset; /* sector offset to 'super' block */ u64 la_size_sect; /* last agreed size, unit sectors */ + spinlock_t uuid_lock; u64 uuid[UI_SIZE]; u64 device_uuid; u32 flags; @@ -1119,8 +1120,9 @@ extern int drbd_md_read(struct drbd_conf *mdev, struct drbd_backing_dev *bdev); extern void drbd_uuid_set(struct drbd_conf *mdev, int idx, u64 val) __must_hold(local); extern void _drbd_uuid_set(struct drbd_conf *mdev, int idx, u64 val) __must_hold(local); extern void drbd_uuid_new_current(struct drbd_conf *mdev) __must_hold(local); -extern void _drbd_uuid_new_current(struct drbd_conf *mdev) __must_hold(local); extern void drbd_uuid_set_bm(struct drbd_conf *mdev, u64 val) __must_hold(local); +extern void drbd_uuid_move_history(struct drbd_conf *mdev) __must_hold(local); +extern void __drbd_uuid_set(struct drbd_conf *mdev, int idx, u64 val) __must_hold(local); extern void drbd_md_set_flag(struct drbd_conf *mdev, int flags) __must_hold(local); extern void drbd_md_clear_flag(struct drbd_conf *mdev, int flags)__must_hold(local); extern int drbd_md_test_flag(struct drbd_backing_dev *, int); |