[PATCH] Fix blktrace compile with sysfs not defined
debugfs depends on sysfs, so make blktrace kconfig option depend on that. Reported by Adrian Bunk. Signed-off-by: Jens Axboe <axboe@suse.de>
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@ -13,6 +13,7 @@ config LBD
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config BLK_DEV_IO_TRACE
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bool "Support for tracing block io actions"
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depends on SYSFS
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select RELAY
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select DEBUG_FS
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help
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