On 12/1/21 15:29, Liam Howlett wrote: > From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx> > > The maple tree code was added to find the unmapped area in a previous > commit and was checked against what the rbtree returned, but the actual > result was never used. Start using the maple tree implementation and > remove the rbtree code. Nice cleanup. But... > Add kernel documentation comment for these functions. > > Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx> > > /* Adjust search length to account for worst case alignment overhead */ > length = info->length + info->align_mask; > if (length < info->length) > return -ENOMEM; > > - rcu_read_lock(); > - mas_empty_area_rev(&mas, info->low_limit, info->high_limit - 1, > - length); > - rcu_read_unlock(); Why is RCU locking being removed as part of this? Ditton in unmapped_area_topdown()
