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Date: Mon, 05 Mar 2012 20:26:03 -0800 From: Sunil Mushran <sunil.mushran@...cle.com> To: linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org Subject: Re: [RFC] fadvise: add more flags to provide a hint for block allocation On 3/5/2012 6:35 PM, Zheng Liu wrote: > No, _RANDOM means that file system doesn't need to try its best to find > a proper position to allocate some blocks for this file. Furthermore, > currently random IOs seem that they are not obviously slower than > sequential IOs in Flash/SSD device. For example, when users know a file > that is accessed infrequently, they can put this file in a corner, such > as in some discontinuously blocks. Then sequential blocks are reserved > for the file that needs to be accessed frequently and users can obtain > the better performance. Then FADV_ALLOC_HOT_REGION and FADV_ALLOC_COLD_REGION are probably better terms. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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