Hi Jaegeuk, On 2018/4/8 16:13, Chao Yu wrote: > f2fs doesn't allow abuse on atomic write class interface, so except > limiting in-mem pages' total memory usage capacity, we need to limit > start-commit time as well, otherwise we may run into infinite loop > during foreground GC because target blocks in victim segment are > belong to atomic opened file for long time. > > Now, we will check the condition with f2fs_balance_fs_bg in > background threads, once if user doesn't commit data exceeding 30 > seconds, we will drop all cached data, so I expect it can keep our > system running safely to prevent Dos attack.
Is it worth to add this patch to avoid abuse on atomic write interface by user? Thanks,
