From: Christoph Hellwig <hch@infradead.org>
To: "zhaoyang.huang" <zhaoyang.huang@unisoc.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>,
Matthew Wilcox <willy@infradead.org>,
Vlastimil Babka <vbabka@suse.cz>, Yang Shi <shy828301@gmail.com>,
Suren Baghdasaryan <surenb@google.com>,
Yu Zhao <yuzhao@google.com>,
linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org,
Zhaoyang Huang <huangzhaoyang@gmail.com>,
ke.wang@unisoc.com, Christian Brauner <christian@brauner.io>
Subject: Re: [PATCH] mm: introduce statistic for inode's gen&tier
Date: Tue, 27 Jun 2023 23:11:53 -0700 [thread overview]
Message-ID: <ZJvPKV+1d2+uHB1E@infradead.org> (raw)
In-Reply-To: <1687857438-29142-1-git-send-email-zhaoyang.huang@unisoc.com>
On Tue, Jun 27, 2023 at 05:17:18PM +0800, zhaoyang.huang wrote:
> --- a/include/linux/fs.h
> +++ b/include/linux/fs.h
> @@ -434,6 +434,8 @@ struct address_space {
> struct rb_root_cached i_mmap;
> struct rw_semaphore i_mmap_rwsem;
> unsigned long nrpages;
> + atomic_long_t gen;
> + atomic_long_t tier;
This increases the size of the inode by 16 byes, and better have really
good data supporting it, as increases of the inode size impact a lot
of workloads.
next prev parent reply other threads:[~2023-06-28 6:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-27 9:17 zhaoyang.huang
2023-06-28 6:11 ` Christoph Hellwig [this message]
2023-06-28 14:49 ` kernel test robot
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