From: Al Viro <viro@zeniv.linux.org.uk>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: linux-fsdevel@vger.kernel.org,
Richard Weinberger <richard@nod.at>,
linux-mtd@lists.infradead.org, kernel@pengutronix.de,
Jan Kara <jack@suse.com>
Subject: Re: [PATCH 05/11] quota: Allow to pass quotactl a mountpoint
Date: Thu, 15 Aug 2019 00:36:32 +0100 [thread overview]
Message-ID: <20190814233632.GW1131@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20190814121834.13983-6-s.hauer@pengutronix.de>
On Wed, Aug 14, 2019 at 02:18:28PM +0200, Sascha Hauer wrote:
> +/**
> + * reference_super - get a reference to a given superblock
> + * @sb: superblock to get the reference from
> + *
> + * Takes a reference to a superblock. Can be used as when the superblock
> + * is known and leaves it in a state as if get_super had been called.
> + */
> +void reference_super(struct super_block *sb)
> +{
> + spin_lock(&sb_lock);
> + sb->s_count++;
> + spin_unlock(&sb_lock);
> +
> + down_read(&sb->s_umount);
> +}
> +EXPORT_SYMBOL_GPL(reference_super);
NAK, for a plenty of reasons
1) introduction of EXPORT_SYMBOL_GPL garbage
2) aforementioned garbage on something that doesn't need to be exported
3) *way* too easily abused - get_super() is, at least, not tempting to
play with in random code. This one is, and it's too low-level to
allow.
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next prev parent reply other threads:[~2019-08-14 23:36 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-14 12:18 [PATCH 00/11] Add quota support to UBIFS Sascha Hauer
2019-08-14 12:18 ` [PATCH 01/11] quota: Make inode optional Sascha Hauer
2019-08-14 12:18 ` [PATCH 02/11] quota: Only module_put the format when existing Sascha Hauer
2019-08-15 11:18 ` Jan Kara
2019-08-16 11:49 ` Sascha Hauer
2019-08-14 12:18 ` [PATCH 03/11] fs: move __get_super() out of loop Sascha Hauer
2019-08-14 23:32 ` Al Viro
2019-08-14 12:18 ` [PATCH 04/11] fs, quota: introduce wait_super_thawed() to wait until a superblock is thawed Sascha Hauer
2019-08-14 23:35 ` Al Viro
2019-08-14 12:18 ` [PATCH 05/11] quota: Allow to pass quotactl a mountpoint Sascha Hauer
2019-08-14 22:42 ` kbuild test robot
2019-08-14 23:33 ` kbuild test robot
2019-08-14 23:36 ` Al Viro [this message]
2019-08-14 23:39 ` Al Viro
2019-08-14 23:51 ` Al Viro
2019-08-15 9:53 ` Jan Kara
2019-08-15 7:46 ` Sascha Hauer
2019-08-14 12:18 ` [PATCH 06/11] ubifs: move checks and preparation into setflags() Sascha Hauer
2019-08-14 12:18 ` [PATCH 07/11] ubifs: Add support for FS_IOC_FS[SG]ETXATTR ioctls Sascha Hauer
2019-08-14 14:11 ` Mainz, Roland
2019-08-15 7:31 ` Sascha Hauer
2019-08-14 12:18 ` [PATCH 08/11] ubifs: do not ubifs_inode() on potentially NULL pointer Sascha Hauer
2019-08-14 12:18 ` [PATCH 09/11] ubifs: Add support for project id Sascha Hauer
2019-08-14 12:18 ` [PATCH 10/11] ubifs: export get_znode Sascha Hauer
2019-08-14 12:18 ` [PATCH 11/11] ubifs: Add quota support Sascha Hauer
2019-08-15 11:17 ` Jan Kara
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