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SubjectRe: [PATCH IMPROVEMENT] block, bfq: limit sectors served with interactive weight raising

On 12/28/17 12:19, Paolo Valente wrote:
(snip half a tech report ;)

So either this or the previous patch ("limit tags for writes and async I/O"
can lead to a hard, unrecoverable hang with heavy writes. Since I couldn't
log into the affected system anymore I couldn't get any stack traces, blk-mq
debug output etc. but there was nothing in dmesg/on the console, so it
wasn't a BUG/OOPS.


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