From: Dave Chinner <david@fromorbit.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: xfs@oss.sgi.com
Subject: Re: [PATCH 3/5] repair: handle memory allocation failure from blkmap_grow
Date: Mon, 10 Oct 2011 11:10:57 +1100 [thread overview]
Message-ID: <20111010001057.GN3159@dastard> (raw)
In-Reply-To: <20111009235126.GC13527@infradead.org>
On Sun, Oct 09, 2011 at 07:51:26PM -0400, Christoph Hellwig wrote:
> > static blkmap_t *
> > blkmap_grow(
> > - blkmap_t **blkmapp)
> > + blkmap_t *blkmap)
> > {
> > pthread_key_t key = dblkmap_key;
> > - blkmap_t *blkmap = *blkmapp;
> > + blkmap_t *new_blkmap;
> > + int new_naexts = blkmap->naexts + 4;
> >
> > if (pthread_getspecific(key) != blkmap) {
> > key = ablkmap_key;
> > ASSERT(pthread_getspecific(key) == blkmap);
> > }
> >
> > - blkmap->naexts += 4;
> > - blkmap = realloc(blkmap, BLKMAP_SIZE(blkmap->naexts));
> > - if (blkmap == NULL)
> > - do_error(_("realloc failed in blkmap_grow\n"));
> > - *blkmapp = blkmap;
> > - pthread_setspecific(key, blkmap);
> > - return blkmap;
> > + new_blkmap = realloc(blkmap, BLKMAP_SIZE(new_naexts));
> > + if (!new_blkmap) {
> > + do_error(_("realloc failed in blkmap_grow\n"));
> > + return NULL;
> > + }
> > + blkmap->naexts = new_naexts;
>
> Why would we modify naexts in the old blkmap?
Ooops. Will fix.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2011-10-10 0:11 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-09 23:11 [PATCH 0/5, v2] repair: sector size and blkmap fixes Dave Chinner
2011-10-09 23:11 ` [PATCH 1/5] repair: handle repair of image files on large sector size filesystems Dave Chinner
2011-10-09 23:52 ` Christoph Hellwig
2011-10-10 0:17 ` Dave Chinner
2011-10-10 0:19 ` Christoph Hellwig
2011-10-09 23:11 ` [PATCH 2/5] repair: fix some valgrind reported errors on i686 Dave Chinner
2011-10-09 23:45 ` Christoph Hellwig
2011-10-10 0:20 ` Dave Chinner
2011-10-10 13:14 ` Christoph Hellwig
2011-10-09 23:11 ` [PATCH 3/5] repair: handle memory allocation failure from blkmap_grow Dave Chinner
2011-10-09 23:51 ` Christoph Hellwig
2011-10-10 0:10 ` Dave Chinner [this message]
2011-10-09 23:11 ` [PATCH 4/5] repair: don't cache large blkmap allocations Dave Chinner
2011-10-09 23:48 ` Christoph Hellwig
2011-10-10 0:14 ` Dave Chinner
2011-10-10 13:22 ` Christoph Hellwig
2011-10-09 23:11 ` [PATCH 5/5] repair: prevent blkmap extent count overflows Dave Chinner
-- strict thread matches above, loose matches on Subject: below --
2011-10-10 1:08 [PATCH 0/5, v3] repair: sector size and blkmap fixes Dave Chinner
2011-10-10 1:08 ` [PATCH 3/5] repair: handle memory allocation failure from blkmap_grow Dave Chinner
2011-10-10 14:14 ` Christoph Hellwig
2011-10-13 9:57 ` Alex Elder
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