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NVMeOF controller in the passsthru mode is capable of handling wide set of I/O commands including vender specific passhtru io comands. The vendor specific I/O commands are used to read the large drive logs and can take longer than default NVMe commands, i.e. for passthru requests the timeout value may differ from the passthru controller's default timeout values (nvme-core:io_timeout). Add a configfs attribute so that user can set the io timeout values. In case if this configfs value is not set nvme_alloc_request() will set the NVME_IO_TIMEOUT value when request queuedata is NULL. Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de> |
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