Re: [PATCH] md: md_open returns -EBUSY when entering racing area

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To: Zhao Heming <heming.zhao@xxxxxxxx>
Subject: Re: [PATCH] md: md_open returns -EBUSY when entering racing area
From: Christoph Hellwig <hch@xxxxxx>
Date: Sat, 3 Apr 2021 18:11:58 +0200
Cc: linux-raid@xxxxxxxxxxxxxxx, song@xxxxxxxxxx, hch@xxxxxx, guoqing.jiang@xxxxxxxxxxxxxxx, lidong.zhong@xxxxxxxx, xni@xxxxxxxxxx, neilb@xxxxxxx, colyli@xxxxxxxx
In-reply-to: <1617418885-23423-1-git-send-email-heming.zhao@suse.com>
References: <1617418885-23423-1-git-send-email-heming.zhao@suse.com>
User-agent: Mutt/1.5.17 (2007-11-01)

This defintively looks better than the ERESTARTSYS hack.

I think I'll defer the whole blkdev_get refactoring and bd_mutex to
open_mutex conversion to the next merge window, so I think we should
be fine with this plus the mddev_find split.

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

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