diff options
Diffstat (limited to 'drivers/staging/lustre/lustre/llite/range_lock.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/llite/range_lock.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/staging/lustre/lustre/llite/range_lock.c b/drivers/staging/lustre/lustre/llite/range_lock.c index 94c818f1478b..14148a097476 100644 --- a/drivers/staging/lustre/lustre/llite/range_lock.c +++ b/drivers/staging/lustre/lustre/llite/range_lock.c @@ -61,17 +61,23 @@ void range_lock_tree_init(struct range_lock_tree *tree) * Pre: Caller should have allocated the range lock node. * Post: The range lock node is meant to cover [start, end] region */ -void range_lock_init(struct range_lock *lock, __u64 start, __u64 end) +int range_lock_init(struct range_lock *lock, __u64 start, __u64 end) { + int rc; + memset(&lock->rl_node, 0, sizeof(lock->rl_node)); if (end != LUSTRE_EOF) end >>= PAGE_SHIFT; - interval_set(&lock->rl_node, start >> PAGE_SHIFT, end); + rc = interval_set(&lock->rl_node, start >> PAGE_SHIFT, end); + if (rc) + return rc; + INIT_LIST_HEAD(&lock->rl_next_lock); lock->rl_task = NULL; lock->rl_lock_count = 0; lock->rl_blocking_ranges = 0; lock->rl_sequence = 0; + return rc; } static inline struct range_lock *next_lock(struct range_lock *lock) |