From: Al Viro <viro@zeniv.linux.org.uk>
To: Nhat Pham <nphamcs@gmail.com>
Cc: akpm@linux-foundation.org, hannes@cmpxchg.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
bfoster@redhat.com, willy@infradead.org, kernel-team@meta.com
Subject: Re: [PATCH v2 3/4] cachestat: implement cachestat syscall
Date: Sat, 10 Dec 2022 23:51:32 +0000 [thread overview]
Message-ID: <Y5UbhBTB2nSMN4UD@ZenIV> (raw)
In-Reply-To: <20221205175140.1543229-4-nphamcs@gmail.com>
On Mon, Dec 05, 2022 at 09:51:39AM -0800, Nhat Pham wrote:
> + if (!access_ok(cstat, sizeof(struct cachestat)))
> + return -EFAULT;
What for? You are using copy_to_user() later, right?
> + f = fdget(fd);
> + if (f.file) {
It would be easier to read if you inverted the condition here.
next prev parent reply other threads:[~2022-12-10 23:51 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-05 17:51 [PATCH v2 0/4] cachestat: a new syscall for page cache state of files Nhat Pham
2022-12-05 17:51 ` [PATCH v2 1/4] workingset: fix confusion around eviction vs refault container Nhat Pham
2022-12-05 17:51 ` [PATCH v2 2/4] workingset: refactor LRU refault to expose refault recency check Nhat Pham
2022-12-05 23:49 ` Yu Zhao
2022-12-06 1:19 ` Nhat Pham
2022-12-06 1:28 ` Yu Zhao
2022-12-06 2:22 ` Nhat Pham
2022-12-06 2:25 ` Yu Zhao
2022-12-08 18:07 ` Nhat Pham
2022-12-06 15:22 ` Matthew Wilcox
2022-12-07 17:28 ` Nhat Pham
2022-12-05 17:51 ` [PATCH v2 3/4] cachestat: implement cachestat syscall Nhat Pham
2022-12-05 23:15 ` kernel test robot
2022-12-06 4:48 ` kernel test robot
2022-12-06 4:59 ` kernel test robot
2022-12-07 1:42 ` kernel test robot
2022-12-10 23:51 ` Al Viro [this message]
2022-12-12 13:22 ` Brian Foster
2022-12-12 16:50 ` Nhat Pham
2022-12-12 16:23 ` Nhat Pham
2022-12-12 16:24 ` Matthew Wilcox
2022-12-12 16:37 ` Nhat Pham
2022-12-05 17:51 ` [PATCH v2 4/4] selftests: Add selftests for cachestat Nhat Pham
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