From: Alex Elder <aelder@sgi.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH] xfs: writepage always has buffers
Date: Sun, 11 Jul 2010 22:43:09 -0500 [thread overview]
Message-ID: <1278906189.7456.22.camel@doink> (raw)
In-Reply-To: <20100628143457.GC5473@infradead.org>
On Mon, 2010-06-28 at 10:34 -0400, Christoph Hellwig wrote:
> These days we always have buffers thanks to ->page_mkwrite. And we already
> have an assert a few lines above tripping in case that was not true due to
> a bug.
Should the ASSERT() be made stronger (i.e., BUG_ON())?
Looks to me like we'll crash if it ever happens in a
non-debug kernel, and a BUG() call would more directly
tell us what the problem was...
In an case, this looks OK to me.
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
> Index: xfs-dev/fs/xfs/linux-2.6/xfs_aops.c
> ===================================================================
> --- xfs-dev.orig/fs/xfs/linux-2.6/xfs_aops.c 2010-06-28 11:59:29.590253914 +0200
> +++ xfs-dev/fs/xfs/linux-2.6/xfs_aops.c 2010-06-28 11:59:48.341006462 +0200
> @@ -1072,13 +1072,6 @@ xfs_vm_writepage(
> if ((current->flags & PF_FSTRANS) && (delalloc || unwritten))
> goto out_fail;
>
> - /*
> - * Delay hooking up buffer heads until we have
> - * made our go/no-go decision.
> - */
> - if (!page_has_buffers(page))
> - create_empty_buffers(page, 1 << inode->i_blkbits, 0);
> -
> /* Is this page beyond the end of the file? */
> offset = i_size_read(inode);
> end_index = offset >> PAGE_CACHE_SHIFT;
>
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next prev parent reply other threads:[~2010-07-12 3:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-28 14:34 [PATCH] xfs: writepage always has buffers Christoph Hellwig
2010-07-09 16:13 ` Christoph Hellwig
2010-07-12 3:43 ` Alex Elder [this message]
2010-07-12 16:05 ` Christoph Hellwig
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