Re: [PATCH] eventfs: Have inodes have unique inode numbers
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- Subject: Re: [PATCH] eventfs: Have inodes have unique inode numbers
- From: Matthew Wilcox <willy@xxxxxxxxxxxxx>
- Date: Fri, 26 Jan 2024 22:34:05 +0000
- Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Linux Trace Devel <linux-trace-devel@xxxxxxxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>, Ajay Kaher <ajay.kaher@xxxxxxxxxxxx>, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, linux-fsdevel <linux-fsdevel@xxxxxxxxxxxxxxx>
- In-reply-to: <8547159a-0b28-4d75-af02-47fc450785fa@efficios.com>
- References: <20240126150209.367ff402@gandalf.local.home> <CAHk-=wgZEHwFRgp2Q8_-OtpCtobbuFPBmPTZ68qN3MitU-ub=Q@mail.gmail.com> <20240126162626.31d90da9@gandalf.local.home> <CAHk-=wj8WygQNgoHerp-aKyCwFxHeyKMguQszVKyJfi-=Yfadw@mail.gmail.com> <CAHk-=whNfNti-mn6vhL-v-WZnn0i7ZAbwSf_wNULJeyanhPOgg@mail.gmail.com> <8547159a-0b28-4d75-af02-47fc450785fa@efficios.com>
On Fri, Jan 26, 2024 at 05:14:12PM -0500, Mathieu Desnoyers wrote:
> I would suggest this straightforward solution to this:
>
> a) define a EVENTFS_MAX_INODES (e.g. 4096 * 8),
>
> b) keep track of inode allocation in a bitmap (within a single page),
>
> c) disallow allocating more than "EVENTFS_MAX_INODES" in eventfs.
... reinventing the IDA?
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