linux-kernel - Re: [PATCH v2 4/5] fat: eliminate orphaned inode number allocation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAKYAXd8Pspe0nobWedVfOwVYEKQsXx-Kbs1gWJm5F0ARgusTUw@mail.gmail.com>
Date:	Wed, 5 Sep 2012 22:37:41 +0900
From:	Namjae Jeon <linkinjeon@...il.com>
To:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Cc:	akpm@...ux-foundation.org, bfields@...ldses.org,
	viro@...iv.linux.org.uk, linux-kernel@...r.kernel.org,
	Namjae Jeon <namjae.jeon@...sung.com>,
	Ravishankar N <ravi.n1@...sung.com>,
	Amit Sahrawat <a.sahrawat@...sung.com>
Subject: Re: [PATCH v2 4/5] fat: eliminate orphaned inode number allocation

2012/9/5, OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>:
> OGAWA Hirofumi <hirofumi@...l.parknet.co.jp> writes:
>
>> Namjae Jeon <linkinjeon@...il.com> writes:
>>
>>> From: Namjae Jeon <namjae.jeon@...sung.com>
>>>
>>> Maintain a list of inode(i_pos) numbers of orphaned inodes (i.e the
>>> inodes that have been unlinked but still having open file
>>> descriptors).At file/directory creation time, skip using such i_pos
>>> values.Removal of the i_pos from the list is done during inode eviction.
>>
>> What happens if the directory (has busy entries) was completely removed?
Hi OGAWA.
There are 2 cases:
1. The cluster can be used as a data cluster of a file - In which case
we can write
normally into it.
2. The cluster can be allocated to a new directory. In this case, the busy i_pos
locations can not be used to create new entries until the correspnding
inodes are
evicted.

>>
>>
>> And Al's point is important for NFS too. If you want stable ino for NFS,
>> you never can't change it.
Yes, It is also important, I will explain throughout reply in Al's mail.
Thanks!
>
> s/never can't/never can/
> --
> OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/