Hi Zhong Jiang, On Mon, Oct 17, 2016 at 3:58 AM, zhong jiang <zhongjiang@xxxxxxxxxx> wrote: > Hi, Vitaly > > About the following patch, is it right? > > Thanks > zhongjiang > On 2016/10/13 12:02, zhongjiang wrote: >> From: zhong jiang <zhongjiang@xxxxxxxxxx> >> >> At present, zhdr->first_num plus bud can exceed the BUDDY_MASK >> in encode_handle, it will lead to the the caller handle_to_buddy >> return the error value. >> >> The patch fix the issue by changing the BUDDY_MASK to PAGE_MASK, >> it will be consistent with handle_to_z3fold_header. At the same time, >> change the BUDDY_MASK to PAGE_MASK in handle_to_buddy is better. are you seeing problems with the existing code? first_num should wrap around BUDDY_MASK and this should be ok because it is way bigger than the number of buddies. ~vitaly -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>