linux-ext4 - Re: [RFC]Ext4: journal credits reservation fixes for DIO, fallocate and delalloc writepages

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Message-Id: <1217014725.6322.32.camel@mingming-laptop>
Date:	Fri, 25 Jul 2008 12:38:45 -0700
From:	Mingming Cao <cmm@...ibm.com>
To:	Andreas Dilger <adilger@....com>
Cc:	linux-ext4@...r.kernel.org,
	Shehjar Tikoo <shehjart@....unsw.edu.au>,
	"Theodore Ts'o" <tytso@....edu>
Subject: Re: [RFC]Ext4: journal credits reservation fixes for DIO,
	fallocate and delalloc writepages


在 2008-07-22二的 19:18 -0600，Andreas Dilger写道：
> On Jul 22, 2008  17:51 -0700, Mingming Cao wrote:
> > + * Calulate the total number of credits to reserve to fit
> > + * the modification of @num pages into a single transaction
> > + */
> > +int ext4_writepages_trans_blocks(struct inode *inode, int num)
> > +{
> > +	int bpp = ext4_journal_blocks_per_page(inode);
> > +	int nrblocks = num * bpp;
> > +
> > +	if (!EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
> > +		return ext4_writepages_trans_blocks_old(inode, nrblocks);
> 
> This should be "if (!(EXT4_I(inode)->i_flags & EXT_EXTENTS_FL))",
Thanks for catching this.

Mingming


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