On Thu, Jun 30, 2011 at 10:12:25AM +0800, Steven Liu wrote:

quoted

+       bio = bio_alloc(GFP_NOIO, min(nvecs, BIO_MAX_PAGES));

Is this needn't to check if bio_alloc success?

No, that was the point of this patch.  See the commit description.
Also see the comment for bio_alloc() in fs/bio.c, and note that
the __GFP_WAIT bit is set in GFP_NOFS.

Regards,

						- Ted
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