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Date: Sun, 7 Nov 2010 12:45:39 +0100 From: Jens Axboe <jaxboe@...ionio.com> To: Mike Snitzer <snitzer@...hat.com> CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>, Neil Brown <neilb@...e.de>, "drbd-dev@...ts.linbit.com" <drbd-dev@...ts.linbit.com> Subject: Re: [PATCH] block: read i_size with i_size_read() On 2010-11-05 20:27, Mike Snitzer wrote: > Convert direct reads of an inode's i_size to using i_size_read(). > > i_size_{read,write} use a seqcount to protect reads from accessing > incomple writes. Concurrent i_size_write()s require mutual exclussion > to protect the seqcount that is used by i_size_{read,write}. But > i_size_read() callers do not need to use additional locking. Thanks Mike, I'll queue this up. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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