Merge branch 'for-bfields' of git://linux-nfs.org/~tomtucker/xprt-switch-2.6 into for-2.6.27
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@@ -139,8 +139,16 @@ commit=nrsec (*) Ext4 can be told to sync all its data and metadata
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Setting it to very large values will improve
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performance.
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barrier=1 This enables/disables barriers. barrier=0 disables
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it, barrier=1 enables it.
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barrier=<0|1(*)> This enables/disables the use of write barriers in
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the jbd code. barrier=0 disables, barrier=1 enables.
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This also requires an IO stack which can support
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barriers, and if jbd gets an error on a barrier
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write, it will disable again with a warning.
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Write barriers enforce proper on-disk ordering
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of journal commits, making volatile disk write caches
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safe to use, at some performance penalty. If
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your disks are battery-backed in one way or another,
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disabling barriers may safely improve performance.
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orlov (*) This enables the new Orlov block allocator. It is
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enabled by default.
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@@ -36,6 +36,7 @@ files, each with their own function.
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local_cpus nearby CPU mask (cpumask, ro)
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resource PCI resource host addresses (ascii, ro)
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resource0..N PCI resource N, if present (binary, mmap)
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resource0_wc..N_wc PCI WC map resource N, if prefetchable (binary, mmap)
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rom PCI ROM resource, if present (binary, ro)
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subsystem_device PCI subsystem device (ascii, ro)
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subsystem_vendor PCI subsystem vendor (ascii, ro)
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