linux-kernel - Re: [PATCH 07/22] adfs: drop vmtruncate

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Message-ID: <20121013162015.GD19899@infradead.org>
Date:	Sat, 13 Oct 2012 12:20:15 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Marco Stornelli <marco.stornelli@...il.com>
Cc:	Al Viro <viro@...IV.linux.org.uk>,
	Anton Blanchard <anton@...ba.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linux-kernel@...r.kernel.org,
	Linux FS Devel <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH 07/22] adfs: drop vmtruncate

> @@ -57,8 +57,9 @@ static int adfs_write_begin(struct file *file, struct address_space *mapping,
>  				&ADFS_I(mapping->host)->mmu_private);
>  	if (unlikely(ret)) {
>  		loff_t isize = mapping->host->i_size;
> -		if (pos + len > isize)
> -			vmtruncate(mapping->host, isize);
> +		if ((pos + len > isize) &&
> +			inode_newsize_ok(mapping->host, isize) == 0)
> +			truncate_setsize(mapping->host, isize);

No need for the inode_newsize_ok check here.

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