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| Filename | Latest commit message | Latest commit date |
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535ae4eb12
In raid5-cache writeback mode, we have two types of stripes to handle. - stripes which aren't cached yet - stripes which are cached and flushing out to raid disks Upperlayer is more sensistive to latency of the first type of stripes generally. But we only one handle list for all these stripes, where the two types of stripes are mixed together. When reclaim flushes a lot of stripes, the first type of stripes could be noticeably delayed. On the other hand, if the log space is tight, we'd like to handle the second type of stripes faster and free log space. This patch destinguishes the two types stripes. They are added into different handle list. When we try to get a stripe to handl, we prefer the first type of stripes unless log space is tight. This should have no impact for !writeback case. Signed-off-by: Shaohua Li <shli@fb.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.